Is it time to ditch your desktops for PC blades?

Is it time to ditch your desktops for PC blades?

The desktop unit that is part of Hewlett-Packard's PC blade system is about the size of a thick hardcover book, and it might be mistaken for a modernist vase if not for the various ports for connecting thumb drives and other USB devices. The device is centrally managed, supports desktop virtualization software and is easier for IT administrators to secure than PCs are.

Moreover, HP last week announced improvements to the Blade PC technology that it claims will give users a "true desktop experience." Rival ClearCube Technology followed suit this week, introducing three new end-user devices that it said create a "perfect PC experience" for users of its PC blades.

Sounds great -- so why aren't more businesses buying the PC blades offered by HP, ClearCube and other vendors?

IDC said that about 100,000 PC blades were shipped last year and predicts that the number of units shipped will increase to 260,000 this year. That's still infinitesimal compared to the more than 250 million PCs that the market research firm expects to be shipped worldwide during 2007.

When asked about PC blades, attendees at this week's HP Technology Forum & Expo 2007 said they liked the idea of ditching desktop PCs. But they're being held back by a variety of issues, some technical and some cultural.

Moving to PC blades is "a very tempting idea," said Jim Becker, IT manager at the Urban Institute in Washington. Becker thinks that using blades on the desktop would reduce the costs associated with provisioning and maintaining PCs. The only issue he cited as a potential problem "is a perception issue on the part of end users" -- in other words, a reluctance to give up their PCs.

Harold Baker, a senior developer at DirecTV in El Segundo, California, said that if his desktop PC was replaced with a blade system, "it wouldn't make any difference to me." His biggest concern was whether he would be able to store files locally in case the blade system failed, which PC blade vendor do support.

Dominic Costanza, a technical systems analyst at a financial services firm that he asked not be identified, said he saw the issue of moving to PC blades as a case of balancing the migration cost versus the risk of sticking with less secure desktop PCs. Security and risk management "are starting to have more weight as time goes on, and maybe the benefits [of switching to PC blades] will outweigh the cost," Costanza said.

Vendors are trying to reduce end-user resistance to PC blades via enhancements such as the ones announced this month by HP and ClearCube.

HP said it was upgrading its Blade PC offering with new Athlon 64 chips from Advanced Micro Devices, while also incorporating a proprietary compression technology called Remote Graphics that previously was used in its workstations. The use of the compression technology is designed to boost the graphics capabilities of the Blade PC devices to PC-like levels, HP officials said.

Austin-based ClearCube said its new end-user port devices include technology that eliminates the need to hard-wire them to the PC blades installed in data center server racks. The need for the direct connections had limited the distances that the thin clients could be located away from the blade units to no more than 200 metres, according to ClearCube.

Now the two devices can be connected via an IP network, which does away with the distance restriction, said Tom Josefy, ClearCube's director of product management.

To make that possible, the company is using PC-over-IP chips, developed by Teradici in Burnaby, British Columbia, that use a compression algorithm to help boost the delivery of high-bandwidth graphics, such as video streaming. ClearCube's new I9400 Series products include two of the Teradici processors -- one that sits next to the graphics processor on the blade itself, and the other located on the end-user device.

HP's Blade PCs are priced from US$1,000 to $1,500, plus another US$300 to $500 for the thin-client device. ClearCube said its new system, due later this year, will cost about $US800 to $1,000 more than its existing products, which start at about US$1,600 including the thin client.

A major issue for any move to PC blades is concerning laptop users. Earlier this year, Citrix Systems, the leading vendor of thin-client technology, upgraded its Presentation Server software to allow mobile users to disconnect their laptops from a network and still maintain functionality.

Mike Dodge, who manages the Unix systems group at the Detroit Medical Center, supports 12,000 users, about half of whom are using Citrix technology. He said this week that he plans to look at PC blades but is pleased with the combination of Citrix's software and a Linux-based desktop client that "works amazingly well."

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