Can You Have Too Much Throughput?

By Chris Preimesberger  |  Posted 2008-11-17 Print this article Print

Can't have too much throughput -- or can you?

The Virtual Connect Flex-10 Ethernet module allows throughput to be throttled any way necessary to serve these needs.

"It's true that you really can't have too much throughput," Potter said, "and if it were free, it would be fine. But 10GB at this point is still costly, and if you don't actually need that kind of speed, then you're overprovisioning."

Virtual Connect Flex-10 also saves 240 watts of power per HP BladeSystem enclosure, or 3,150 kilowatt hours per year, compared with existing networking technologies, Potter said.

The recently announced HP ProLiant BL495c virtualization blade includes built-in Virtual Connect Flex-10 functionality that enables the BL495c to support as many as 24 NIC connections.

HP also unveiled the rack-based ProLiant DL385 G5p virtualization server, which can support more virtual machines in less space, and with lower power requirements, than previous versions. Using Advanced Micro Devices' new Opteron 2300 Series Quad-Core processors, it contains up to 6 terabytes of internal storage.

"With Flex-10 modules and BL495c blades, each physical server gets eight 'physical' NICs (up to 24 with an expansion cards), which fan out to 384 'physical' connections coming out of a full bank of switch modules," James Staten of Forrester Research wrote in his blog.

"You, of course, can blow out this number with virtual NICs per VM, as not every VM will need its own physical NICs. And each of these connections can replace an FC port in an Ethernet storage configuration.

"If you want to pack a ton of VMs into a tiny package without sacrificing I/O performance, this is an intriguing way to go. Even if you don't use Flex-10 for storage, the density benefits here are worth considering," Staten wrote.

U.S list pricing is as follows: The HP Virtual Connect Flex-10 Ethernet module costs  $12,199, the HP NC532m Flex-10 NIC is $699, the HP Virtual Connect 4GB FC module is $9,499, and the HP ProLiant DL385 G5p is $2,259.

Chris Preimesberger Chris Preimesberger was named Editor-in-Chief of Features & Analysis at eWEEK in November 2011. Previously he served eWEEK as Senior Writer, covering a range of IT sectors that include data center systems, cloud computing, storage, virtualization, green IT, e-discovery and IT governance. His blog, Storage Station, is considered a go-to information source. Chris won a national Folio Award for magazine writing in November 2011 for a cover story on and CEO-founder Marc Benioff, and he has served as a judge for the SIIA Codie Awards since 2005. In previous IT journalism, Chris was a founding editor of both IT Manager's Journal and and was managing editor of Software Development magazine. His diverse resume also includes: sportswriter for the Los Angeles Daily News, covering NCAA and NBA basketball, television critic for the Palo Alto Times Tribune, and Sports Information Director at Stanford University. He has served as a correspondent for The Associated Press, covering Stanford and NCAA tournament basketball, since 1983. He has covered a number of major events, including the 1984 Democratic National Convention, a Presidential press conference at the White House in 1993, the Emmy Awards (three times), two Rose Bowls, the Fiesta Bowl, several NCAA men's and women's basketball tournaments, a Formula One Grand Prix auto race, a heavyweight boxing championship bout (Ali vs. Spinks, 1978), and the 1985 Super Bowl. A 1975 graduate of Pepperdine University in Malibu, Calif., Chris has won more than a dozen regional and national awards for his work. He and his wife, Rebecca, have four children and reside in Redwood City, Calif.Follow on Twitter: editingwhiz

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