On 04/10/10 08:55 PM, Ron Mexico wrote:
He means, if you test transfer speeds on the server where the disks are
actually located instead of over the network via ISCSI, what sort of transfer
speeds do you see? What are the speeds if you try from where the disk
physically are instead of remotely?
Ah. OK.
I set up a test and copied a 100GB file from one zpool to another. Speed was
82MB/s, which is just over 20% of the advertised bandwidth of the Dell SAS-5e
controller [375MB/s]. Grrr.
And what sort of transfer speeds do you see over the network from those
disks when *not* using iSCSI?
For example, if you do an rsync from that system to the system where you
were measuring iSCSI performance from one of those disks, what sort of
speed do you see then?
-Shawn
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