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HP Delivers Proliant-Based Desktop Virtualization

The CRN Test Center evaluates a VDI solution from Hewlett-Packard.

client/server

Heavily invested in the virtual marketplace is Hewlett- Packard, which sent the CRN Test Center one of its VDI solutions for evaluation. Mimicking a system suitable for a small office or department, its ProLiant ML-350 dual-Xeon server was running VMware ESXi Server 4.1 with dedicated virtual machines fulfilling the roles of Domain Controller, vCenter Server and the VMware View Server.

The VMware View Server handles clients connecting with the VMware View client (formerly VMware VDI), which uses the proprietary PC over IP (PCoIP) protocol. Versions are available for Linux, Mac OS X and Windows. VMware View also is available for thin clients, including HP’s 64-bit Atom-based t5740 thin-client device. HP also offers versions for Microsoft RDP, Citrix XenDesktop and HP’s own TeemTalk terminal emulation client for accessing legacy platforms.

The test system virtualized an instance of 32-bit Windows XP Pro running on an Intel Xeon E5530 quad-core processor at 2.4GHz with 3 GB of memory. The experience was much like that of a machine running Windows locally; most applications and menus were responsive and snappy. In fact, when running a CAD program, the movement was fairly smooth. The thin client’s ports are live, and testers were able to connect a USB thumb drive and install software to the extent that it was allowed based on the user’s access privileges. An external USB hard drive was not recognized. Windows sounds were played through the thin client’s speakers.

For an objective test of system performance, testers installed Primate Labs’ Geekbench 2.1.11, the Test Center’s standard benchmark, ran it five times and took the best score, 2,869. This is not a high score by any means, and is about 45 percent slower than the slowest score of 6,328 testers found on Primate Labs’ results browser Web site. It should be noted that the PCoIP protocol has been criticized for lackluster performance compared with others. But with the widespread deployment of VMware, the protocol is being built into monitors, including several models from Samsung. Also, our testing was conducted between one server and one thin client. Performance in the real world, with multiple clients accessing one or more servers, will be different.

Testers met with a few glitches when in the early stages of server setup, most of which related to configuring the test server to operate in our test labs. It was finicky about having any of its IP addresses changed. It also beat its chest over which domain controller would get to dominate. Once acclimated to its surroundings, the ProLiant behaved nicely, serving up Windows virtual images on demand to a variety of devices and acting as testers expected it should.

We did learn, however, that if you perform a shutdown of Windows (as opposed to simply logging off), that that instance of Windows will no longer be available for remote connection until it’s manually restarted in the vSphere Server. Obviously, the shutdown command has to be removed from Windows instances. Though we’re told that VMware View supports Windows 7, we couldn’t get it to work in time for this report.

The Bottom Line

When evaluating a customer’s need for a virtualized desktop environment, the intended application(s) will play a lead role. If you’re proposing workstations for a public library, the main purpose of which is to search a single database of library resources, then the thinnest of thin (or zero) clients attaching to a two-node server or blade system will likely deliver more than enough horsepower and responsiveness. Likewise, if you’re equipping a small number of single-app users who also need e-mail and might occasionally surf the Web, then a solution similar to HP’s thin client would likely be adequate.

However, if the need is for graphics, media or anything that requires extensive computing power, then hypervisor-based VDI is probably not the right choice. Of course, the customer’s existing infrastructure will play a major role in deciding what to offer. Previous investments in servers, networking, virtualization and branch-office and mobility requirements all need to be considered. But one thing seems certain: The possibilities are virtually endless.

COMMUNITY: Connect with the CRN Test Center at community.crn.com.

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