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HDS, HP Intro SAN Arrays for the Virtualized Enterprise

By ServerWatch Staff (Send Email)
Posted Sep 29, 2010


As the standard issue for a server shifts from that of a physical box to a virtual server, the surrounding network infrastructure is expanding and growing. Christophe Bertrand, sr. director product Marketing for Platforms and Business Continuity at Hitachi Data Systems (HDS), explained to ServerWatch that while customers have had many improvement to meet their computing needs, the storage infrastructure in its current form has been unable to handle the growth of multiple data types increasing exponentially

HDS and HP unveil enterprise-class 3D SAN arrays designed to ease virtualization pain points.

Enter HDS' recently announced three-dimensional storage architecture that scales out, up and deeply. InfoStor looks at the enterprise-class SAN arrays HDS and HP introduced earlier this week.


In introducing its Virtual Storage Platform (VSP), the successor to its Universal Storage Platform (USP) V, HDS put the emphasis on "3D scaling," which refers to the ability to scale up (performance, capacity and connectivity), scale out (multiple systems in a single logical system) and scale deep (via virtualization of heterogeneous resources).

HDS officials also emphasized the system’s page-level Dynamic Tiering, where a page is now defined as a more granular 42MB stripe size. Data can be automatically placed on tier 0 (SSD flash drives), tier 1 (SAS drives) or tier 2 (SATA) according to user-defined policies and the frequency of data access. All of the drive types come in a 2.5-inch form factor, which provides power and cooling advantages vs. older arrays with 3.5-inch drives.

Hitachi Dynamic Provisioning (HDP), or thin provisioning, is also now based on 42MB page sizes and a data dispersion methodology.

"With Dynamic Provisioning, there is no notion of physicality associated with a LUN," said Claus Mikkelsen, HDS' chief scientist, "and there's no way you can manually provision a LUN that would outperform what we can do with HDP."

Compared to the previous generation USP V, the VSP provides:

  • 140 percent more performance (237,000 IOPS vs. 100,000 IOPS assuming a 60-40 read-write ratio and 8KB blocks)
  • 87 percent more IOPS per square foot (5,545 vs. 2,970)
  • 78 percent more drives (2,048 2.5-inch drives vs. 1,152 3.5-inch drives)
  • 71 percent more connectivity (192 8Gbps Fibre Channel ports vs. 112 ports on the USP V)
  • 40 percent less power consumption (expressed in kVA per TB)
  • 40 percent higher density
  • 80 percent more bandwidth

Read the rest of "HDS, HP ship high-end disk arrays" at InfoStor

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