Thanks for your quick replies. I am running MySQL on a Dell PowerEdge 2950 with PERC6 (with BBU) 6 x 15K drives configured with Raid 10. Is the recommendation to: 1) mount XFS with -onobarrier 2) write cache disabled for the drive 3) write-back enabled for the controller
Post: Evaluating IO subsystem performance for MySQL Needs
…on has 256MB BBU (Battery Backed up Cache) on…cache if RAID read cache is enabled. If it is disabled you may be reading from Drives cache…a bit you will well learn how your cache behaves. Were even more so interested about writes which show us how many cached writes…it is Dell PowerEdge 2950 with PERC5…

