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Hybrid Storage Hype: Page 5 of 6

There are several different variations on this theme being explored by companies of different size and focus. A key marketing question is whether these devices should be called RAID, MAID, SPAID – or how about BOID (Brick of Independent Disks)?

Let's also not forget the hybrid disk drive that – via packaging – appears as tape, or that supports removability that is traditionally associated with tape. Products like those from Quantum (GoVault), Iomega (Rev), Imation (RDX, Odyssey, Ulysses), Prostor (RDX), and others come to mind.

Given enough holiday cheer, I suppose we could consider VTLs, along with optical DVDs front-ended by NAS or a tape emulator as hybrid storage. Aw heck, in the spirit of the season, let’s call any storage virtualization solution in general a hybrid, and let the creative marketeers come up with new tiers or classifications of hybrid storage.

Next Page: Parting Thoughts

Let's wrap up with a few things to consider regarding hybrid storage:

  • Are proprietary software, drivers, agents, shims, file systems, or volume managers needed?
  • Is functionalty, such as NAS or iSCSI, provided via a gateway or router?
  • Where does the vendor lock-in exist, if applicable?
  • For NAS, are both NFS and CIFS supported, or just one or the other?
  • Does the solution support block and file concurrently for reads and writes?
  • Will a GigE port be dedicated to NAS or iSCSI or support both concurrently?
  • Can a block LUN be accessed concurrently via iSCSI and Fibre Channel?
  • If a duel or redundant controller (processor) are featured, are both active, or is one in standby?
  • Can either controllers or processors be used for a mix of block and file concurrently?
  • How is encryption key management handled for encryption-based drives?