Bob Friesenhahn wrote:
Striping across two large raidz2s is not ideal for multi-user use. You
are getting the equivalent of two disks worth of IOPS, which does not
go very far. More smaller raidz vdevs or mirror vdevs would be
better. Also, make sure that you have plenty of RAM installed.
For small files I would definitely go mirrored.
What disk configuration (number of disks, and RAID topology) is the
NetApp using?
On NetApp you only can choose between RAID-DP and RAID-DP :-)
With mirroring you will certainly loose space-wise against NetApp, but
if your data compresses well, you will still end up with more space
available. Our 7410 system currently compresses with a CPU utilisation
of around 3% for compression. This while using gzip-2 and getting a
compression ratio of 1.96.
So far, I'm very happy with the system.
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