Since Hewlett-Packard acquired LeftHand Networks in 2008, it has continued to develop LeftHand's complete line of software-based iSCSI storage under the HP LeftHand P4000-series moniker. Based on the feature-rich SAN/iQ 9.5 software platform, the currently available P4000 G2 series includes a range of different physical form factors based on HP's ProLiant server line, as well as the virtualized P4000 VSA (Virtual SAN Appliance), which runs on VMware vSphere or Microsoft Hyper-V.
At its heart, the P4000 VSA is simply a virtualized (and thus hardware agnostic) version of the same SAN/iQ software that powers its physical brethren. Though the virtualized version comes with notable scalability limitations, it offers a great deal of flexibility in configuring storage either in concert with physical P4000-series SANs or on its own as a purely virtual SAN.
[ Also on InfoWorld: EMC VNXe 3100 review: Sweet entry-level NAS and SAN | InfoWorld's expert contributors show you how to get server virtualization right in this 24-page "Server Virtualization Deep Dive" PDF guide. | Learn how to use server virtualization to get highly reliable failover in InfoWorld's High Availability Virtualization Deep Dive PDF special report. ]
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