The Dell SAS controller probably have on-board write cache which helps with
performance (write commit).
Based on my limited understanding, the 7110 does not have write cache on SAS
controller.
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zfs-discus
We have a 7110 on try and buy program.
We tried using the 7110 with XEN Server 5 over iSCSI and NFS. Nothing seems to
solve the slow write problem. Within the VM, we observed around 8MB/s on
writes. Read performance is fantastic. Some troubleshooting was done with local
SUN rep. The conclusion
