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May 27th, 2009 08:00
ZFS AFTD - optimum block size
Hi
Setting up a ZFS pool for AFTD backups - Clariion, 4 RAID3 RG's of 9 disks each.
Has anyone played around with or is there a EMC reccomended block size for the ZFS setup re backup performance - I guess this probably ties in with the Clariion block size?
Any thoughts/experience on the matter appreciated.
Setting up a ZFS pool for AFTD backups - Clariion, 4 RAID3 RG's of 9 disks each.
Has anyone played around with or is there a EMC reccomended block size for the ZFS setup re backup performance - I guess this probably ties in with the Clariion block size?
Any thoughts/experience on the matter appreciated.
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dpinink_silva
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724 Posts
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May 27th, 2009 12:00
nicbone
116 Posts
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May 27th, 2009 15:00
I'm seeing good throughput with clariion + zfs defaults already plus zfs compression at the file system level (zfs compression on) on top of client side (networker) compression is reducing size - factor 1.5x. comparison with like UFS fs is positive
Unless there are compelling reasons to change will probably stick with defaults + zfs compression. could probably spend hue amounts of time tuning this!!
yzabary
18 Posts
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March 7th, 2010 04:00
I have a Clarion AX150 (which I now decomission in favor of a storage node based on x4500) with 12 750Gb SATA disks.
Before that, I had 500Gb disks with which I had a single RAID5 (10 data, 1 pairty, 1 spare) group and a single LUN on top of it. Then, I switched to three RAID5 groups (3 data, 1 parity) and performance became much better. With UFS, performance was very poor (2Tb LUNs).