Comments on: Mo’ better ZFS performance stats

By: Andrew Gallagher

Andrew Gallagher — Fri, 10 Aug 2007 19:16:00 +0000

Our experience was that ZFS on clariion didn’t work. We wanted to use large luns (e.g. 6Tb) for veritas netbackup disk staging and hoped ZFS would make that possible. All we got was ZFS errors, system crashes when we were able to create pools+fs, and recommendations from EMC support that we should not use ZFS because it was not supported.

By: Centurion

Centurion — Fri, 27 Apr 2007 12:58:16 +0000

Not so Dimitris, take a look at the Sun 6140 and 6540… Hardware based RAID5 on the ASIC. You can see the performance numbers at storageperformance.org

Best regards.

By: Dimitris

Dimitris — Thu, 26 Apr 2007 17:11:32 +0000

There ain’t no such thing any more as a “hardware” RAID controller, at the high end. Clariions run Intel CPUs on a well-knon OS, really. The higher-end boxes also run general-purpose CPUs with proprietary software. Gone are the days where we had custom ASICs doing stuff.

By: Robert Milkowski

Robert Milkowski — Tue, 24 Apr 2007 21:22:41 +0000

One correction – in x4500 I used 44 disks in RAID10 plus 2 hot spare disks + 2 mirrored disks for a system as I think this is good production configuration for x4500.

By: Damien

Damien — Tue, 24 Apr 2007 20:48:45 +0000

You have the obvious problem of I/O on desktop machines – comparisons of ZFS on uber hardware doesn’t make a bit of difference when talking about Joe Schmo’s latest onboard SATA controller.