I've had perfect success with the SuperMicro SC847E25-RJOB1 It has two back
planes and holds 45 3.5 inch drives.  It's built as a JBOD so it has
everything that is needed.

On Tue, Nov 13, 2012 at 2:08 PM, Peter Tripp <pe...@psych.columbia.edu>wrote:

> Hi folks,
> I'm in the market for a couple of JBODs.  Up until now I've been
> relatively lucky with finding hardware that plays very nicely with ZFS.
>  All my gear currently in production uses LSI SAS controllers (3801e,
> 9200-16e, 9211-8i) with backplanes powered by LSI SAS expanders (Sun x4250,
> Sun J4400, etc).  But I'm in the market for SAS2 JBODs to support a large
> number 3.5inch SAS disks (60+ 3TB disks to start).
> I'm aware of potential issues with SATA drives/interposers and the whole
> SATA Tunneling Protocol (STP) nonsense, so I'm going to stick to a pure SAS
> setup.  Also, since I've had trouble with in the past with daisy-chained
> SAS JBODs I'll probably stick with one SAS 4x cable (SFF8088) per JBOD and
> unless there were a compelling reason for multi-pathing I'd probably stick
> to a single controller.  If possible I'd rather buy 20 packs of enterprise
> SAS disks with 5yr warranties and have the JBOD come with empty trays, but
> would also consider buying disks with the JBOD if the price wasn't too
> crazy.
> Does anyone have any positive/negative experiences with any of the
> following with ZFS:
>  * SuperMicro SC826E16-R500LPB (2U 12 drives, dual 500w PS, single LSI
> SAS2X28 expander)
>  * SuperMicro SC846BE16-R920B (4U 24 drives, dual 920w PS, single unknown
> expander)
>  * Dell PowerVault MD 1200 (2U 12 drives, dual 600w PS, dual unknown
> expanders)
>  * HP StorageWorks D2600 (2U 12 drives, dual 460w PS, single/dual unknown
> expanders)
> I'm leaning towards the SuperMicro stuff, but every time I order
> SuperMicro gear there's always something missing or wrongly configured so
> some of the cost savings gets eaten up with my time figuring out where
> things went wrong and returning/ordering replacements.  The Dell/HP gear
> I'm sure is fine, but buying disks from them gets pricey quick. The last
> time I looked they charged $150 extra per disk for when the only added
> value was a proprietary sled a shorter warranty (3yr vs 5yr).
> I'm open to other JBOD vendors too, was just really just curious what
> folks were using when they needed more than two dozen 3.5" SAS disks for
> use with ZFS.
> Thanks
> -Peter
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