Hi, I currently have a 1U server (Sun X2200) with 2 LSI HBA attached to a Supermicro JBOD chassis each one with 24 disks , SATA 1TB, and so far so good.. So i have a 48 TB raw capacity, with a mirror configuration for NFS usage (Xen VMs) and i feel that for the price i paid i have a very nice system.
Bruno Ian Allison wrote: > Hi, > > I know (from the zfs-discuss archives and other places [1,2,3,4]) that > a lot of people are looking to use zfs as a storage server in the > 10-100TB range. > > I'm in the same boat, but I've found that hardware choice is the > biggest issue. I'm struggling to find something which will work nicely > under solaris and which meets my expectations in terms of hardware. > Because of the compatibility issues, I though I should ask here to see > what solutions people have already found. > > > I'm learning as I go here, but as far as I've been able to determine, > the basic choices for attaching drives seem to be > > 1) SATA Port multipliers > 2) SAS Multilane Enclosures > 3) SAS Expanders > > In option 1, the controller can only talk to one device at a time, in > option 2 each miniSAS connector can talk to 4 drives at a time but in > option 3 the expander can allow for communication with up to 128 > drives. I'm thinking about having ~8-16 drives on each controller > (PCI-e card) so I think I want option 3. Additionally, because I might > get greedier in the future and decide to add more drives on each > controller I think option 3 is the best way to go. I can have a > motherboard with a lot of PCIe slots and have one controller card for > each expander. > > > Cases like the Supermicro 846E1-R900B have 24 hot swap bays accessible > via a single (4u) LSI SASX36 SAS expander chip, but I'm worried about > controller death and having the backplane as a single point of failure. > > I guess, ideally, I'd like a 4u enclosure with 2x2u SAS expanders. If > I wanted hardware redundancy, I could then use mirrored vdevs with one > side of each mirror on one controller/expander pair and the other > side on a separate pair. This would allow me to survive controller or > expander death as well hard drive failure. > > > Replace motherboard: ~500 > Replace backplane: ~500 > Replace controller: ~300 > Replace disk (SATA): ~100 > > > Does anyone have any example systems they have built or any thoughts > on what I could do differently? > > Best regards, > Ian. > > > [1] http://www.mail-archive.com/zfs-discuss@opensolaris.org/msg27234.html > [2] http://www.avsforum.com/avs-vb/showthread.php?p=17543496 > [3] http://www.stringliterals.com/?p=53 > [4] http://www.mail-archive.com/zfs-discuss@opensolaris.org/msg22761.html > > > _______________________________________________ > zfs-discuss mailing list > zfs-discuss@opensolaris.org > http://mail.opensolaris.org/mailman/listinfo/zfs-discuss >
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