|Exam Name||:||HP OpenView Network Node Manager I (6.x) - UNIX/NT|
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|Updated On||:||February 18, 2019|
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HP0-717 exam Dumps Source : HP OpenView Network Node Manager I (6.x) - UNIX/NT
Test Code : HP0-717
Test Name : HP OpenView Network Node Manager I (6.x) - UNIX/NT
Vendor Name : HP
Q&A : 194 Real Questions
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HP has warned that its network administration device suffers from a vulnerability safety specialists are calling "moderately essential."
in accordance with a protection bulletin posted on the HP web site (registration required), a vulnerability in the Openview network Node manager (OV NNM) might enable malicious people remote access to affected techniques.
according to HP, there are problems with OV NNM types 6.2, 6.four, 7.01 and seven.50 working on HP-UX, Solaris, home windows NT, windows 2000, windows XP and Linux.
according to an advisory posted on security business Secunia's net web page, enter passed as a parameter to the script cgi-bin/connectedNodes.ovpl is rarely "safely sanitized earlier than getting used as command line arguments." The ensuing command "will also be exploited to execute arbitrary shell commands by means of a certainly crafted string containing shell meta characters."
The advisory also says the cdpView.ovpl, freeIPaddrs.ovpl, and ecscmg.ovpl scripts are reportedly also prone.
unless HP releases a patch, the enterprise advises users to movement the connectedNodes.ovpl, cdpView.ovpl, freeIPaddrs.ovpl and ecscmg.ovpl scripts to an extra listing.
HP, as a Microsoft windows 2000 global Launch companion, published its aggressive capabilities method and a few new products at the contemporary Mircosoft Expo. HP is abundantly prepared to aid home windows 2000 with the finished family of hardware items and a comprehensive service software.
The three-day Microsoft windows 2000 conference and Expo held in San Francisco changed into attended by a couple of thousand keen IT professionals. unlike Microsoft’s past essential, consumer-based mostly product launches, this experience became very subdued, presumably to replicate the serious nature of business computing. HP, as a Microsoft windows 2000 world Launch accomplice, revealed its own aggressive functions approach and a number of new products.
In an approach that's common of HP, the enterprise is abundantly organized to help home windows 2000 with the finished household of hardware items and a finished service application. one of the most telling examples of HP’s dedication to home windows 2000 changed into the recent formation of the Microsoft services firm. (See sidebar dialog with HP customary supervisor David Stubbs.) the brand new enterprise unit is committed to assisting consumers plan, design, put into effect and maintain Microsoft applied sciences across the commercial enterprise to bring what they hope to be bulletproof computing environments.
The outward relationship between HP and Microsoft exhibited all the way through the experience became all grins and thumbs-up. besides the fact that children there existed some at the back of-the-scenes difficulty related to future product conflicts, Microsoft’s vp of home windows advertising, Deborah Willingham, officially echoed the mutual love through declaring, "we're extremely joyful that HP is proposing this kind of finished latitude of hardware, application, services and guide for home windows 2000. The depth of HP’s features, which consist of consulting, migration services, license management and practising, will provide our mutual valued clientele the important capabilities they want."
Jim Allchin, Microsoft community vp for windows systems, underscored these views. "HP is building computing device programs that are totally optimized for home windows 2000 … by using combining world-type items and functions from Microsoft and HP, purchasers enjoy a smoother migration route and a more constant, manageable person adventure."
For a long time, HP has led the pack in go platform community management equipment. With the release of home windows 2000, HP has made a renewed commitment to its flagship OpenView suite. OpenView Microsoft Alliance supervisor, John Renshaw, and Product supervisor, Pam Peterson, eagerly promoted the brand new windows 2000 manageability equipment.
The big news is whatever referred to as Vantage factor for windows, a set of technologies that became developed for business windows 2000 manageability. in response to Renshaw, "Vantage aspect gives true intelligence illustration tracking, and the ability to proactively be mindful what's being run. Vantage point and OpenView specific were built from the floor-up to guide windows 2000. This allows for big scalability."
constructing from its present business successes, HP OpenView categorical is designed for mid-measurement firms operating windows 2000 and other working programs. It combines HP OpenView ManageX for proactive server handle and administration, OpenView network Node manager for community administration and event notification, and OpenView OmniBack II for backup and retrieval of kept digital facts. This suite facilitates faster difficulty isolation and resolution by way of integrating community advice. by utilizing experience correlation, alarms, reporting and threshold institution, the business device administrator is afforded equipment to manipulate and troubleshoot.
HP OpenView gives coverage-based administration to video display home windows 2000 methods, according to predefined thresholds. motion may also be taken when failure or degradation is present in CPU utilization, memory usage, disk utilization or performance reliability. OpenView can also be used to instantly restart windows 2000 features when thresholds are passed.
When asked about its relationship to home windows 2000 lively listing, Renshaw stated that a considerable quantity of effort has long gone into offering APIs for future construction. at the moment, the relationship is fairly basic, however plans for additional integration are in the works. As to the connection of HP’s management tools with Microsoft’s gadget administration Server product, HP became much less definitive. "We trust them complementary at this stage, but there may well be some performance overlap sooner or later … we will need to see things boost."
In a aspect discussion with the CIO of inventive Artists company (CAA), Michael Keithley, we found a huge fan of OpenView express. He gave an illustration of the necessities that CAA has for storing and retrieving the significant quantities of streaming digital information linked to the movie, tv and recording industry. The deserve to unexpectedly produce digital content about their valued clientele is a crucial component of their success. Keithley states that the "OmniBack function, in certain, greater than exceeded our expectations. running OpenView express on windows 2000 offers both efficiency and reduced costs." The company presently makes use of 45 HP 4- and 8-method NetServer LPr, and LX 8000 and 8500 techniques. moreover, it has 25 HP NetServers in location to assist file, print, fax and e-mail functions.
a further vital utility suite added for guide on home windows 2000 is HP TopTools. This set of utilities screens system actions and signals clients of pending part failure or different knowledge complications.
greater security Bundle
one of the key price-brought add-ons to the home windows 2000 mix offered by using HP is its superior security products. Denis Bournival, HP program manager, shared his concepts on these protection initiatives.
The HP ProtectTools 2000 optimizes the safety points already attainable in home windows 2000. "the general public Key Infrastructure (PKI) elements of the OS are extra enhanced, for instance, by the brand new HP smart Card readers," states Bournival. "This expertise is finding acceptance throughout industries, with maximum demand in fiscal, executive, and business to company internet settings."
HP views the ProtectTool 2000 as a transaction-enabling expertise by using digital private Networks. "IPSec performance is additionally greatly stronger," concludes Bournival.
HP takes the theory of their safety bundle one step further. one of the vital underrated areas of business protection relates to vigor administration. If the gadget fails, costly facts can be lost. according to this difficulty, HP introduced the HP vigor insurance policy equipment for windows 2000. Designed to work directly with the home windows 2000 professional hibernation mode, this compact device suits into a pc single free enlargement shelf. The vigor insurance plan machine is wholly computerized, whether the workstation is unattended, in sleep mode, in "suspend" mode, or in "suspend to RAM" mode. All open file and user desktop atmosphere backup is performed in case of energy failure, shutting down the laptop, cleanly and securely, inside 5 seconds.
HP is extremely aggressive in providing its windows 2000 functions. In a dialog with Ian Bromehead, who manages the world Microsoft options functions core in Grenoble, France, he indicated that HP has opened operations worldwide to guide home windows 2000 proof-of-thought checking out, planning and migration. "We want purchasers to experience windows 2000 in a real-world environment after which to prototype their commercial enterprise with professional guide."
The home windows 2000 Readiness assessment classes are designed to aid shoppers consider their current IT environment and to contrast these wants towards the mixed products and services provided by using HP and Microsoft. HP consultants work with shoppers to convey gigantic and sophisticated implementations in a managed check ambiance. The Server and Storage Consolidation Planning software is designed to support purchasers to advance and manage an architectural strategy that optimizes windows 2000 know-how.
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Hewlett-Packard has been delving deeper and deeper into crossplatform enterprise systems management, through a series of technology investments in OpenView. Now, users and analysts are definitely feeling the impact.
When it comes to heterogenous environments, OpenView is a strong player, according to Bill Emmett, solutions manager at HP. "OpenView compares favorably to IBM Tivoli and CA-Unicenter on the basis of both cost effectiveness and modular, plug-and-play architecture," he contends. Aside from its myriad API interfaces, Emmett emphasizes OpenView's support for myriad operating systems and multiple "open standards."
Emmett's enthusiasm isn't surprising, since vendors typically tout their own products. Some users and analysts, though, are equally gung-ho.
Tim Hagan, VP of IT operations and engineering for Zurich Life, says it took him and a couple of other people less than 90 days to deploy OpenView in a complex call center environment.
Zurich Life is using OpenView to manage about 110 servers and 65 databases in two physical locations. The systems are running HP-UX, Sun Solaris, IBM AIX, and Microsoft Windows 2000, NT, and XP. Zurich is operating OpenView on HP-UX servers, but the systems management platform runs on Sun Solaris and Microsoft Windows servers, too.
No Longer "Just a Network Node Manager"When Hagan first came to Zurich Life in January of 2000, the insurance firm was still using HP's old Network Node Manager. "That was one of the reasons I was hired. It didn't hurt that I'd had prior success with OpenView in an earlier job. I knew that OpenView has a very open architecture, and that it would very quickly tie in with our (other) existing platforms and tools," according to Hagan.
The current OpenView product does include Network Node Manager as one of its myriad optional modules. Used for network element discovery, layout, inventory and performance, it connects with HP OpenView Operations for cross-discipline administration.
"The old Network Node Manager (alone) was a very reactive environment, though. We kept hearing about outages from our internal customers. We'd get the symptoms and descriptions after the events had already happened. We'd end up looking not so good, and sometimes we'd need to bring in a bunch of people to help fix the problem," Hagan says..
"With OpenView, however, we've become instantly proactive. We can prevent problems, and we're aware of problems that do occur before the users even know about them. If a customer calls, we can say, 'A trouble ticket has already been created, and a page has been sent out. Such-and-such application will be up in an hour or two.'"
HP needs to be a software playerSome critics argue that OpenView can't be all that important to HP, since HP's hardware revenues far outweigh the software side. However, industry analyst Jasmine Noel disputes that conclusion.
Noel points to a number of industry trends affecting HP, as well as other industry providers. "Margins on computing hardware keep declining; computing-based business services are now critical to enterprise success; and successful delivery of business services requires management of the entire compting stack," she says.
"The computing stack in every large enterprise continues to be heterogenous," adds Noel, who is principal at JNoel Associates. "This combination of trends requires HP to have a heterogenous management solution (in order to present) a credible software story to enterprise customers."
Noel also likes the investments HP is making in "intelligent" management, for more efficient administration, and in industry partnerships, for better interoperability with other vendors' products.
OpenView's EvolutionEmmett notes that HP first moved into systems management with Network Node Manager in 1988. "We used what technology was available at the time, including SNMP. We then started adding more and more capabilities," he adds. Acquisitions helped HP to build up OpenView. In 1997, for instance, HP bought Prolin, the Netherlands-based maker of the IT Service Manager suite.
At this point, HP's large OpenView family revolves largely around Operations Monitor and Performance Monitor. Each monitoring product has agents running on all major platforms, ranging from Linux to MVS.
Operations Manager is the central enterprise console, for an end-to-end view of the enterprise that includes client PCs, the network, applications, and database. Performance Monitor provides tools such as a graphing function and reports for monitoring and analyzing resource utilization.
For better interoperability, OpenView complies with standards ranging from SNMP and RMON to OMI. "We often sit on standards committees, in fact," according to Emmett.
HP also offers a set of templates, known as Smart Plug-Ins (SPIs), for configuring third-party tools. "The Smart Plug-In knows where to find the log files in Oracle, for instance," Emmett illustrates.
The HP Operations Manager can also be combined with OpenView Service Navigator, Service Information Portal, Service Desk, and Internet Services, as well as with Network Node Manager, for example.
Service Navigator uses information captured in the SPIs to let administrators drill down to discover root causes for potential problems. If a warning flashes because application performance is degrading, the administrator can drill down through the database and storage system to find out that a disk is overheating, for instance, according to Emmett.
Service Navigator also includes "impact analysis" capabilities for determining which databases and applications are likely to suffer, and the level of severity of the impending hit. OpenView uses color coding to indicate six different severity states.
Administrators can automate response sequence, such as paging an administrator or failing over to a backup server, for example. An optional add-on known as Advanced Security provides authentication and data encryption.
As Emmett sees it, OpenView has two main sets of competitors: "framework vendors" (such as IBM Tivoli and CA) and "point tool vendors." BA Patrol, he says, "falls somewhere in between."
Deployment in 88 days"My company granted us 180 days for OpenView deployment. I set up a much more aggressive schedule of 90 days, but we were able to finish up in 88 days," Hagan says. Hagan worked on the rollout at Zurich Life with one fulltime consultant, plus one employee. The employee spent 50 percent of his time on the OpenView rollout, and the other half of his time on Unix administration.
"One important piece was to make sure we got the requirements for alarms monitors and thresholds from all of the associated systems managers. We didn't want to be paging someone at 3 am, just because server capacity had reached 90 percent," Hagan recalls.
Hagan claims that he's gotten extensive cooperation from all across his company. "Our e-commerce team thinks OpenView is wonderful. What you can do with OpenView is limited only by your imagination."
Zurich Life has already used HP's SPIs to integrate Oracle, Sybase SQL Server, and several third-party management tools. Hagan says the company is now testing SPIs for Lotus Notes and Ciscoworks, for instance.
Zurich did consider other systems management products, such as Tivoli, Unicenter, and Patrol. "Some products, though, don't provide data that's as meaningful, and some have longer implementation times. We didn't have a huge staff to roll this out," Hagan points out.
More automation on the way"Windows, Solaris, and HP-UX. Those are the server environments that systems management products typically run on, although sometimes you get one or two others, depending on the vendor's partnerships," Noel observes..
Beyond that, Noel doesn't want to compare OpenView with other systems management products. "Each one is too different," she maintains.
The analyst is especially impressed, though, with HP's future plans for simplifying systems and automating service level management with OpenView.
"HP's message it their target market is that corporate IT departments that operate as business partners will be more successful, less prone to costcutting measures, and less likely to be outsourced," according to Noel.
"HP has two overall messages about its solutions. The first is (that) HP solutions help corporate IT deliver better services with fewer resources and lower costs. The proverbial silver bullet HP OpenView offers is service level management. HP expands the definition of service level management from the current understanding of monitoring and alerting on SLA violations to one of a process of defining,provisioning, managing, and optimizing the resources delivering the service," according to Noel.
"HP's second message is (that) their solution set is both comprehensive and innovative. (The message) is comprehensive in that HP has solutions for every aspect of service level management and continues to add capabilities. (It is) innovative in that HP's newest products address how new technologies change the management requirements."
HP's three-year roadmap calls for further improvements to integration, infrastructure, and storage management; development of a Service Level Object Model; and delivery of products "that aid in the diagnostic process," the analyst notes.
On the integration side, for instance, HP is now in the process of consolidating its multiple integration APIs into a single toolkit for third party vendors.
With the Service Level Object Model, HP is looking to "grab all the information, and put it into a common format, so it's easier to share information as you move from one step in the process to the other," according to Noel.
In terms of infrastructure coverage, HP is working on Web Services standards and protocols such as J2EE, WebMethods' OMI initiative, and Microsoft's .NET servers.
Some of OpenView's latest products, such as OpenView Transaction Manager, can monitor J2EE and .NET services and applications. For the future, though, HP plans to build in more intelligence.
"You can monitor 100 things in J2EE, but which ones are most important? Right now, you only get that by using (OpenView) for a while. Also, you can trace the path a transaction took through .NET, but you can only do this after-the-fact. HP wants to bring this into realtime," she says.
HP now offers SPIs for WebMethods, Microsoft .NET, and SunOne Web Services - SOAP Engine, for example. At least 40 SPIs are provided, all told.
Other recently added OpenView products include Service Activator, for automating the delivery of services offered by hosting providers; and Data Protector, a replacement for OpenView Omniback II.
Data Protector is designed for integrated management of disk-based and tape-based recovery across multiple OS, applications, and storage architectures. Administrators can manage both recovery time and recovery point objectives.
HP integrates CompaqWith the Compaq acquisition, HP is now working on integrating Compaq's products into its systems administration mix. Compaq Insight Manager will continue to be used only in Wintel environments, since its administration capabilities are hardware-oriented, Emmett says.
However, Compaq's TeMIP product for telco administration is now being ported by HP from Tru64 - which was originally DEC Unix - to HP-UX and Solaris, Emmett adds.
Essentially, editions of OpenView for HP-UX, Solaris and Windows offer the same capabilities. "But we're also taking advantage of the characteristics of each platform. The Windows version was designed for Windows from the ground up. It makes use of Windows drag-and-drop, for instance," Emmett says.
OpenView is Windows 2000-certified. On he Windows side, the product also uses Microsoft technologies that include MMC, WMI, CIM, DCOM, Visual Basic scripting, HTML/XML, HTTP/SOAP, Internet Explorer, and IIS.
"Meanwhile, we're also keeping our eyes open for other potential server platforms, including Linux," adds HP's Emmett.
» See All Articles by Columnist Jacqueline Emigh
HP, as a Microsoft Windows 2000 Global Launch Partner, revealed its aggressive services strategy and a number of new products at the recent Mircosoft Expo. HP is abundantly prepared to support Windows 2000 with the complete family of hardware products and a comprehensive service program.
The three-day Microsoft Windows 2000 Conference and Expo held in San Francisco was attended by several thousand eager IT professionals. Unlike Microsoft’s past major, customer-based product launches, this event was very subdued, presumably to reflect the serious nature of business computing. HP, as a Microsoft Windows 2000 Global Launch Partner, revealed its own aggressive services strategy and a number of new products.
In an approach that is typical of HP, the company is abundantly prepared to support Windows 2000 with the complete family of hardware products and a comprehensive service program. One of the most telling examples of HP’s commitment to Windows 2000 was the recent formation of the Microsoft Services Organization. (See sidebar conversation with HP General Manager David Stubbs.) The new business unit is dedicated to helping customers plan, design, implement and maintain Microsoft technologies across the enterprise to deliver what they hope to be bulletproof computing environments.
The outward relationship between HP and Microsoft exhibited during the event was all grins and thumbs-up. Although there existed some behind-the-scenes concern regarding future product conflicts, Microsoft’s Vice President of Windows Marketing, Deborah Willingham, officially echoed the mutual love by stating, "We are thrilled that HP is presenting such a comprehensive range of hardware, software, services and support for Windows 2000. The depth of HP’s services, which include consulting, migration services, license management and training, will give our mutual customers the crucial services they need."
Jim Allchin, Microsoft Group Vice President for Windows Platforms, underscored these views. "HP is building PC systems that are fully optimized for Windows 2000 … by combining world-class products and services from Microsoft and HP, customers enjoy a smoother migration path and a more consistent, manageable user experience."
For many years, HP has led the pack in cross platform network management tools. With the release of Windows 2000, HP has made a renewed commitment to its flagship OpenView suite. OpenView Microsoft Alliance Manager, John Renshaw, and Product Manager, Pam Peterson, eagerly promoted the new Windows 2000 manageability tools.
The big news is something called Vantage Point for Windows, a collection of technologies that was developed for enterprise Windows 2000 manageability. According to Renshaw, "Vantage Point provides real intelligence instance tracking, and the ability to proactively understand what is being run. Vantage Point and OpenView Express were built from the ground-up to support Windows 2000. This allows significant scalability."
Building from its current enterprise successes, HP OpenView Express is designed for mid-size enterprises running Windows 2000 and other operating systems. It combines HP OpenView ManageX for proactive server control and management, OpenView Network Node Manager for network administration and event notification, and OpenView OmniBack II for backup and retrieval of stored digital data. This suite facilitates quicker problem isolation and resolution by integrating network information. Through the use of event correlation, alarms, reporting and threshold establishment, the enterprise system administrator is afforded tools to manage and troubleshoot.
HP OpenView provides policy-based management to monitor Windows 2000 systems, based on predefined thresholds. Action can be taken when failure or degradation is found in CPU utilization, memory usage, disk utilization or performance reliability. OpenView can also be used to automatically restart Windows 2000 services when thresholds are exceeded.
When asked about its relationship to Windows 2000 Active Directory, Renshaw stated that a considerable amount of effort has gone into providing APIs for future development. At this time, the relationship is rather basic, but plans for further integration are in the works. As to the relationship of HP’s management tools with Microsoft’s System Management Server product, HP was less definitive. "We consider them complementary at this stage, but there may be some functionality overlap in the future … we will have to see things develop."
In a side discussion with the CIO of Creative Artists Agency (CAA), Michael Keithley, we discovered a big fan of OpenView Express. He gave an example of the requirements that CAA has for storing and retrieving the large amounts of streaming digital data associated with the film, television and recording industry. The need to rapidly produce digital content about their clients is an important factor of their success. Keithley states that the "OmniBack feature, in particular, more than exceeded our expectations. Running OpenView Express on Windows 2000 provides both performance and reduced costs." The company currently uses 45 HP 4- and 8-way NetServer LPr, and LX 8000 and 8500 systems. In addition, it has 25 HP NetServers in place to support file, print, fax and e-mail services.
Another important application suite introduced for support on Windows 2000 is HP TopTools. This set of utilities monitors system activities and alerts users of pending component failure or other potential problems.
Enhanced Security Bundle
One of the key value-added components to the Windows 2000 mix offered by HP is its advanced security products. Denis Bournival, HP Program Manager, shared his thoughts on these security initiatives.
The HP ProtectTools 2000 optimizes the security features already available in Windows 2000. "The Public Key Infrastructure (PKI) features of the OS are further enhanced, for example, by the new HP Smart Card readers," states Bournival. "This technology is finding acceptance across industries, with highest demand in financial, government, and business to business Internet settings."
HP views the ProtectTool 2000 as a transaction-enabling technology through the use of Virtual Private Networks. "IPSec performance is also significantly improved," concludes Bournival.
HP takes the concept of their security bundle one step further. One of the most underrated areas of enterprise security relates to power management. If the system fails, costly data could be lost. In response to this issue, HP announced the HP Power Protection Device for Windows 2000. Designed to work directly with the Windows 2000 Professional hibernation mode, this compact device fits into a PC single free expansion shelf. The Power Protection Device is fully automatic, whether the PC is unattended, in sleep mode, in "suspend" mode, or in "Suspend to RAM" mode. All open file and user desktop environment backup is performed in case of power failure, shutting down the PC, cleanly and securely, within five seconds.
HP is extremely aggressive in offering its Windows 2000 services. In a conversation with Ian Bromehead, who manages the Global Microsoft Solutions Services Center in Grenoble, France, he indicated that HP has opened operations around the world to support Windows 2000 proof-of-concept testing, planning and migration. "We want customers to experience Windows 2000 in a real-world environment and then to prototype their enterprise with expert support."
The Windows 2000 Readiness Assessment programs are designed to help clients understand their current IT environment and to contrast these needs against the combined products and services offered by HP and Microsoft. HP consultants work with customers to deliver large and complex implementations in a controlled test environment. The Server and Storage Consolidation Planning program is designed to assist customers to develop and manage an architectural strategy that optimizes Windows 2000 technology.
OpenBench Labs goes under the hood of Hewlett-Packard's NAS server, unveiling some interesting performance results.
By Jack Fegreus
The explosive growth in storage is expressing itself in new definitions of what constitutes "the system." An interesting idea for system managers is attached storage, particularly network-attached storage (NAS).
Just a few years ago it was unthinkable to consider adding storage to a "system" without taking the system down, taking the hardware apart, and physically putting disks into an enclosure. Once the hardware was updated, the system-management tasks, including initializing and formatting drives, began.
Enter the realm of NAS and the Hewlett-Packard SureStore NetStorage 6000. This month, OpenBench Labs puts this NAS server through its paces and assesses how users and administrators can benefit from the convenience, expandability, and performance of the HP NetStorage 6000.
Whether or not users are aware of the NAS device depends on just how aware they are of their network environment, and how well the operations staff has hidden device configuration from view. Linux users may be aware of a new file mount point, while Windows users may be aware of using a new or different drive letter. However, nobody needs to be made aware that the device can be actively shared between Linux and Windows systems.
Looking inside HP's NetStorage 6000 yields a different view. The NetStorage 6000 is a fully qualified file server with substantial power and capability. By default, there is 256MB of RAM (which can be upgraded to 512MB), a 700MHz Pentium III processor with 256KB cache, and an array of up to ten 36GB hot-swap drives, as well as tape drives to back up local and remote data. The NAS server is powered by a BSD-based network operating system (NOS) stored on FLASH ROM.
An embedded Ultra2 SCSI RAID controller manages the storage devices. The storage server is typically presented to the network via an integrated 10/100Mbps Ethernet card. The NetStorage 6000 also offers upgrades to Gigabit Ethernet and 1000Base-SX fiber to cover the need for faster network-transmission speeds. Most of the 256MB of memory is dedicated to serve as a cache for clients connecting to the system. Most of the CPU power is allotted to serving the disks across the Ethernet network and to managing the cache.
On the initial boot, the administrator uses the front panel to set up TCP/IP with or without DHCP and to set the network name for the NAS device. Once TCP/IP settings are chosen, the HP storage server is rebooted and appears on the network. All other configuration options, including disk configuration, system monitoring and alerting, network interoperability, and security, are achieved by means of a Web interface.
Once the Web interface has started, there are four essential aspects to completing the setup of the HP NetStorage 6000: setting system and alert traps, configuring the disks, setting client connectivity, and setting up backup options. In particular, system and alert settings comprise setting the system time and date, contact information, administrator's password, and means by which notification of a critical system or hardware failure is to be broadcast.
Configuring the disks is easy, but can be time-consuming, as each new file volume must be formatted. In our test configuration of six 36GB disks, we configured two three-disk RAID-5 file volumes. The Web interface to file-volume management allows the administrator to set volume parameters such as capacity, name, and RAID type. Once file volumes are created, administrators can expand them by simply assigning more storage. Directories are subordinate to file volumes, and directories can be created, renamed, and deleted as needed.
Clients can access file volumes via NFS mount points or Windows LAN Manager volume shares. The NetStorage 6000 presents directories that can be merged (mounted) into mount points within the normal NFS structure. Unix-like access permissions are set using the Web interface. Systems administrators can set a name by which Windows will see the volume share name. As with native Windows sharing, password security can be set by the access required. Once the share is created, it is exposed using SAMBA; Windows clients can gain access to the volume using the Windows native "Map Network Drive" interface.
We've deliberately skipped over the details of how the NetStorage 6000 manages disk media and the way in which it maps physical media into logical disk space that can be assigned to file volumes. When you start looking at the raw disk subsystem through the NAS server's interface, you see a collection of physical (raw) drives. These physical drives can be joined together into RAID arrays or left as individual devices. The HP NetStorage 6000 interface refers to the disks by their slot number, which is clearly marked on the front of the unit. Individual drives carry different status levels: Empty, Rebuilding, Online, Unassigned, Hot Spare, or Dead.
The hot-spare mechanism presented by the NetStorage 6000 is impressive in its utility and simplicity. When you configure physical drives you assign one or more as a hot spare. If a physical drive that is part of a RAID array fails, the NAS server automatically assigns the first available hot spare to replace the failed drive.
HP's NetStorage 6000 cabinet holds ten 36GB disk drives. While those drives could be configured to deliver 360GB of storage, neither HP nor OpenBench Labs recommends that approach. Despite the market pressure, HP quotes the maximum capacity as 288GB. This capacity is based on a configuration having two RAID-5 volumes with five disks in each volume.
Redundancy is essential to achieving the levels of reliability today's systems demand. HP ships the NetStorage 6000 with two power supplies, both of which are needed for normal operation. A third, hot-swappable power supply can be added so that the system will survive the failure of any single power supply. In addition, an uninterruptible power supply (UPS) can be connected to the NAS server, which will detect power-failure conditions and report them through its alerting mechanisms.
If the device is to hold critical corporate data, that data must be saved at least daily. If 10% of the data on a fully configured NetStorage 6000 were to change daily, that would require backing up 30GB of data each day. Fortunately, HP solves this backup problem by including an external SCSI port and providing for the installation of a tape drive in an empty disk slot. Software support for HP DLT tape is integrated into the NetStorage 6000. Moreover, backup and restore operations can be managed from the NAS server's Web interface.
In addition, the NetStorage 6000 provides what HP calls "disk checkpoints." On schedule or on demand, a system administrator can "draw a line" across a file volume. The NAS server responds by writing incoming data to a different place, which preserves the data state of the file volume. When a client writes data to the volume, the old data is copied to become a part of the checkpoint and the new data is flushed to disk, where it is not a member of the checkpoint.
The checkpoint file, however, resides on disk along with all other data. If the disk is lost, the entire checkpoint is lost. Furthermore, disk checkpoints grow over time. If data changes at a rapid rate, then the active checkpoint files will grow at a correspondingly high rate. We recommend that if you are going to use disk checkpointing, use an automatic schedule that will automatically delete out-of-date checkpoint files.
Because the HP NetStorage 6000 is a full-fledged NAS server, the implementation of security is fairly straightforward. HP has translated and stylized the security model of the NetStorage 6000 to make it familiar and functional for both Windows and Linux administrators. The security challenge for the NAS server is to recognize user identity, map those identities to a protection scheme, and then implement access criteria on that basis. Whenever there is a boundary between systems, such as a network connection, there is the opportunity for the malicious user to change the way that security codes and security settings are interpreted.
In the case of a Linux and/or Unix environment, the NetStorage 6000 stores file permissions in native format-it is a BSD-based system. Each file is stored with its inode meta-data, which includes file ownership and file permissions, in the familiar read/write/execute form.
In the Windows model, device security has two parts. First, the owner or administrator of a device or volume must allow access. If access is permitted, then a deliberate step is required to "share" the device.
In the case of Windows NT and Windows 2000, devices are always created with a default administrator share, which grants access to members of administrator groups. In such a Windows domain-security scenario, a domain controller-a PDC/BDC under Windows NT 4 or an Active Directory Domain Controller under Windows 2000-authenticates users.
HP allows security to be set in both Windows and Unix style. As a result, both Windows and Unix clients can access file volumes without loss of security or protection. The NetStorage 6000 also creates a mechanism for mapping individual file protection between the two architectural schemes. As a result, the NetStorage 6000 integrates easily and almost seamlessly into both Windows and Unix environments.
Nonetheless, consider the case in which multiple NetStorage 6000 devices are scattered throughout the network. The NetStorage 6000 accounts for these problems by integrating support of two classes of software: network-management and remote-backup applications. From the NetStorage 6000 Web interface, systems administrators can monitor NIC summary data, network activity, status summary, environmental parameters, event-log contents, and CPU utilization.
For large heterogeneous sites, which are likely to have a mix of Windows NT, Solaris, and Linux systems, HP NetStorage 6000's tool set includes CA Unicenter TNG Framework and CA ARCserveIT, which run on all of these systems. NetStorage 6000 also integrates with HP OpenView Network Node Manager, HP OpenView OmniBack, and Veritas BackupExec. These packages recognize the Net-Storage 6000; identify it by name, icon, and IP address; allow direct access to the NetStorage 6000 Web interface; and process event notifications from the storage subsystem. While the backup applications are explicitly integrated with the NetStorage 6000, most enterprise backup packages provide the facility to back up CIFS and NFS volumes.
Benchmarking the HP NetStorage 6000 was an interesting exercise that yielded equally interesting results. Our goal was to characterize the performance of the NetStorage 6000 and the rate at which it could deliver data to an application. The problem with NAS is the network: While internally the NetStorage 6000 is theoretically capable of pulling data off the disks at 80MBps, the default 100Mbps Ethernet connection-theoretically 12.5MBps-presents a much lower effective ceiling on data throughput.
We used a Dell 2400 server running Red Hat Linux 6.2 configured with 256MB of RAM-later reduced to 128 MB-to run the OpenBench Labs disk benchmark in order to gauge achievable data throughput from the HP NetStorage 6000. All tests of the NAS server used a RAID-5 volume, which was built using three 36GB disks.
Measuring actual disk throughput was complicated by the difficulty of isolating the effects of multiple data caches on the drives, RAID controller, HP NetStorage 6000, and Dell PowerEdge client system. These cache effects create orders-of-magnitude differences in disk-subsystem performance for differing workloads. By adjusting the size of the target file on the volume under test and adjusting the amount of memory available on the Dell server, we were able to defeat or enhance the effects of these caches on their respective systems.
While the graphs tell the full story of the performance results, here's the summary: The maximum performance we could muster from the entire system was only achieved when fully utilizing the data cache of the Dell PowerEdge server, which was used to access the HP NetStorage 6000. Only when using a data file smaller than the Dell's system memory did we measure effective throughput in the range of 65MBps to 70MBps.
We began running one process, which read a 384MB file sequentially using different read-block sizes. We chose this file size to minimize cache effectiveness on the HP and Dell systems, each of which had been configured with 256MB of RAM.
Surprisingly, we did not measure any significant differences in throughput based on block size. At a 2KB block size, throughput for one process was 5.08MBps, while at a 128KB block size, throughput surged to 5.11MBps. Normally, we would expect to see throughput monotonically increasing with block size.
Increasing the number of processes reading the file rapidly increased overall throughput, but varying the read block size never affected measured throughput. Using 8KB blocks, the most common I/O block size found in commercial applications, throughput ranged from 4.48MBps with one process up to 16.77MBps with 64 processes. While each process begins reading the file at a different location, increasing the number of processes increases the likelihood of inter-process cache hits on the Dell server and accounts for effective throughput reaching 30% higher than the theoretical network limit.
To establish a network-boundary condition, we defeated the cache in the Dell system by using a file significantly larger than the Dell's system memory, but smaller than HP NetStorage 6000 memory. In this configuration, we easily could saturate the network and achieve a stable data throughput of between 10MBps and 13MBps. In this test, we saw that the maximum load placed on the HP NetStorage 6000 CPU was only 20%. We expect that with so much headroom for performance scaling, throughput could be substantially improved with a faster fiber or Gigabit Ethernet interconnect.
The effective throughput of the HP SureStore NetStorage 6000 depends on caching on the client. With high client caching, effective throughput can reach 70MBps, which has little to do with the NAS server.
When client-side caching is defeated-in our tests we read a file too large to fit in cache-throughput is throttled by limits on network throughput.
Click here to enlarge image
With one process and no chance of caching, throughput hovered at 5MBps. This scaled perfectly with two processes as throughput doubled. As more processes were added, throughput rapidly converged on the network limit. As we significantly raised the number of simultaneous processes accessing the device from the same server, inter-process caching came into play and throughput exceeded network limits by 30%.Benchmarks go open source
By Keith WallsBenchmarks can simplify gathering performance profiles on your systems to gauge hardware and software requirements in metrics that relate to your needs. The goal of OpenBench Labs (www.openbench.com) is to deliver a fair and technically rigorous way to compare everything from hardware devices to operating systems. Each month we'll present product reviews based on a benchmark suite that has evolved through 15 years of development.
While device and software manufacturers have used our benchmarks in the past, our target audience is CTOs, together with the people who support the IT decision-making process. The CTO is charged with ensuring that all hardware devices and software purchased are the best available for the organization.
Our goal is to supply the CTO's team with a steady flow of practical information to use when choosing hardware, software, platforms, and technology on which to base IT operations. That practical aspect to information is the most essential one. A tape drive manufacturer may produce a drive that in the laboratory accepts data at astonishing rates; however, theory is far less important than the practical data rate when that drive is installed in a system backing up actual data onto affordable media.
Ideally, the systems we choose as reference platforms-or reasonably close approximations to them-need to be instantly identifiable and have meaning for our readers. A tenth the speed of Deep Blue is no less obtuse as 10 times the speed of a PDP-11/45. The market, and not technological perfection, needs to guide the choice of reference platforms. For now, OpenBench Labs will focus on two operating systems on Intel-based platforms: Red Hat Linux (including compatible distributions) and Windows 2000.
More than any other software project benchmark code is necessarily built on shifting sands. Baselines age and become irrelevant as the techniques used in devices are constantly updated. What's more, benchmarks are somewhat unique in that the discovery of certain types of bugs can sometimes lead to wholesale revisions to the logic of the benchmark. As a result, the OpenBench Labs benchmark suite has always been a continual work-in-progress. That's why OpenBench Labs is making its benchmark suite a set of open-source projects for the operating systems mentioned above.
The OpenBench Labs benchmarks fall into three broad categories based on the computer subsystem that they are designed to test: CPU, memory, and I/O. While CPU benchmarks are concerned primarily with the resulting useful processing power of the system and memory benchmarks are concerned with the performance of access to memory, the I/O category captures all the benchmarks that pertain to getting data into and out of the system from disks or tape. Here, differences in operating system architecture, particularly in the area of data caching, play a significant role in performance and hence significantly complicate code compatibility across platforms.
One of the major focuses in the I/O benchmarks is the effective load that a disk subsystem can support. Here the goal is to measure how quickly data can be accessed by a maximal number of users. To this end, the benchmark attempts to flood the disk with I/O requests, and then measures the response time for each I/O. When the average access time exceeds 100 milliseconds for any user process, the disk is deemed saturated and the benchmark terminates with a report to the user.
Over the coming months, we will present the details of all these benchmarks in a series of Master Class articles. As we complete the first versions of each of the benchmarks, we will post them as open-source projects in the hope that we will attract contributors to our efforts. We are looking for contributions in all aspects of the benchmark series: new devices and software to test, new facets of products to investigate, improvements to the software, and reviews of software for completeness and correctness.OpenBench Labs summary
Under examination:NAS server performance
What we tested:
HP SureStore NetStorage 6000
How we tested:
Click here to enlarge image
The default HP NetStorage 6000 system configuration presented three 36GB disk drives configured as a single RAID-5 volume. For testing, we attached through an NFS mount-point over a private 100Mbps Ethernet network. A Dell 2400 server running Red Hat Linux v6.2 was used for all performance evaluation. The Dell 2400 server was configured with 256MB of RAM for some tests, and reduced to 128MB for other tests.
About our benchmark:The OpenBench Labs ldisk was used with a file sufficiently large to defeat the cache on both the HP NetStorage 6000 and the Dell PowerEdge 2400.
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