Discuss (2) -
Posted at 11:20 AM on Friday 09/25/09 by
Ben
Hotness UNHOT
GoHardDrive.com has the Avolusion RG4UE-B Quad Bay RAIDGear SATA to USB 2.0 & eSATA JBOD RAID Subsystem for $215 - 25% off with coupon code 25OFF4BAYRAID [Exp 9/30] = $161 with free shipping. It supports SATA II hard drives, allowing you to combine up to 4 hard drives into one via JBOD.
  • 1
    pettycash - Posted 1:03 pm PDT 09/25/09 (30 Posts)  Report Spam

    JBOD isn't really RAID
    at all, it is sort of a "third cousin" of RAID... JBOD can be thought of as the opposite of partitioning: while partitioning chops single drives up into smaller logical volumes, JBOD combines drives into larger logical volumes. It provides no fault tolerance, nor does it provide any improvements in performance compared to the independent use of its constituent drives. (In fact, it arguably hurts performance, by making it more difficult to use the underlying drives concurrently, or to optimize
    different drives for different uses.)

    When you look at it, JBOD doesn't really have a lot to recommend it. It still requires a controller card or software driver, which means that almost any system that can do JBOD can also do RAID 0, and RAID 0 has significant performance advantages over JBOD. Neither provide fault tolerance, so that's a wash.

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    dd - Posted 2:56 pm PDT 09/25/09 (778 Posts)  Report Spam

    JBOD can be implemented in software in XP (it's called "spanning"), as can RAID 0 and RAID 1.

    What most people don't get about RAID setups is that the onboard RAID controllers on motherboards and software RAID solutions of any sort are unadulterated crap compared to the performance you can get from a dedicated PCIe 4 lane (or better) controller.

    It's like the difference between the really crappy onboard Intel video garbage on every motherboard, and a proper PCIe 16 lane nVidia card.

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