Peter, Could you please give info or links to clarify "Sata tunneling protocol nonsense" issues?
Also have you considered Supermicro's 45 drive in 4U enclosure - The SC847E26-RJBOD1 ? It's cheap too at around 2000$ and based on LSI backplanes anyway. SGI has a nice and crazy 81(!) 3.5" disks in 4U JBOD enclosure but they refused to sell it to us without them supplying the disks also. http://www.sgi.com/products/storage/modular/jbod.html Anyone aware of a 60 or more disks in 4U enclosure on top of those mentioned in this message or the data-on? We are trying to build super-high-density-storage racks. Cedric Tineo On 13 nov. 2012, at 21:08, 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 > _______________________________________________ > zfs-discuss mailing list > email@example.com > http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
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