Hi,
we have a HGST4u60 SATA JBOD with 24 x 10TB disks. I just saw that back then
when we created the pool we only cared about disk space and so we created a
raidz2 pool with all 24disks in one vdev. I have the impression that this is
cool for disk space but is really bad for IO since this only provides the IO of
a single disk. We only use it for backups and cold CIFS data but I have the
impression that especially running a single VEEAM backup copy job really maxes
out the IO. In our case the VEEAM backup copy job reads and writes the data
from the storage. Now I wonder if it makes sense to restructure the Pool. I
have to admit that I don't have any other system with a lot of disk space so I
can't simply mirror the snapshots to another system and recreate the pool from
scratch.
Would adding two ZIL SSDs improve performance?
Any help is much appreciated.
Best Regards,
Oliver
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