0
votes
1answer
346 views

Using SATA III SSDs for ZFS pools

I'm thinking of building a ZFS server optimized for random access (PostgreSQL database). I figured that I have 2 options: Use pools consisting of the Crucial M500 960 GB SATA III SSDs. Enterprise ...
1
vote
1answer
127 views

SAS IT Mode controllers and SAS Expanders

Lots of semi-related posts, but none that address this scenario. I picked up an LSI SAS1064E-IR based HP Controller. I flashed it with an -IT firmware, and things look somewhat ok. Except that I ...
1
vote
1answer
157 views

ZFS: SAS v SATA - does it matter?

I understand from NEC's white paper, Silent data corruption in disk arrays, that: some SAS drives should have a "T10-DIF" feature to detect silent data corruption; whereas "There is no standard for ...
8
votes
5answers
899 views

ZFS best practices with hardware RAID

If one happens to have some server-grade hardware at ones disposal, is it ever advisable to run ZFS on top of a hardware-based RAID1 or some such? Should one turn off the hardware-based RAID, and run ...
2
votes
1answer
761 views

HP MDS 600 compatibility questions

I've bought a used HP MDS 600 to use as JBOD to a ZFS filesystem. Originally I just assumed that it was a pretty 'dumb' box and I'd be able to use a SAS card like the 16-port LSI one, and most any ...
0
votes
1answer
873 views

Solaris 11 not seeing all SAS disks on HP P212 controller

I've got an HP X1600 with Solaris 11 installed on it. It's got a P212 SAS controller with a single external port. I've got 2x 10k 2.5" SAS drives installed and configured as RAID 1 on the controller ...
1
vote
3answers
563 views

Migrate zpool to new SAS controller

Long ago, we bought an Adaptec 31605 under the impression that: a) it could do true JBOD, and b) it was well supported on OpenSolaris. Turns out both of these were incorrect. I'm trying to get my ...
0
votes
3answers
2k views

Disk names in Solaris 10 for ZFS: SAS WWN instead of c0t0d0

I currently have a server running Solaris 10u9 with a SAS enclosure (Dell PowerVault MD1000) filled with SATA disks attached to an SAS card (LSI 3801E). It happily recognizes the 15 disks in the ...
3
votes
4answers
652 views

ZFS server hardware questions

I'm a photographer by trade and I've yet to find a method I'm happy with for archiving my work. Currently I'm looking at building a NAS server using OpenSolaris, so I can use ZFS. That way I can take ...
0
votes
1answer
652 views

SAS Array with or without expander

Is it better to use a SAS Expander backplane for 12 drives via one SAS connection or is it better to use a SAS backplane with 3 SAS connections? This is in terms of performance, rather than expansion. ...