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Re: SAS 5/IR Performance

In this case, “enable write cache” refers to the hard drive cache settings not the controller cache (data-lost on power outage still applies).
The SAS 5/iR does not have any memory to cache data, for which it does not support RAID volumes on Write Back, all RAID volumes on this controller are Write Through.
SAS drives may also help improving performance.
Make sure you are running on the latest FW, version:

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