My DB server is a dell r710 with megacli. Recently was getting poor performance from the database and stumbled across that the current cache policy is WT but the default cache policy is WB.
# ./MegaCli64 -LDInfo -Lall -aAll | grep 'Cache Policy:' Default Cache Policy: WriteBack, ReadAdaptive, Direct, No Write Cache if Bad BBU Current Cache Policy: WriteThrough, ReadAdaptive, Direct, No Write Cache if Bad BBU
Looking some though some of the other articles on here, is only occurs when the battery is faulty. Looking at the BBU it looks like its good.
# ./MegaCli64 -AdpBbuCmd -GetBbuStatus -aALL | grep isSOHGood isSOHGood: Yes
Am I missing something? How can I change this to be WriteBack so I can get the performance back.