Optional toppings for most LD configurations:
- WT : WriteThrough safer. Only returns once data is written to disk.
데이터가 디스크에 저장되면 반환
- WB: WriteBack faster. Returns as soon as data is is written to cache
데이터가 캐시에 저장되면 반환
- NORA : No Read Ahead vs
- RA: ReadAhead vs
- ADRA : Adaptive ReadAhead where if the previous two requests were sequential, it pre-loads the next in sequence.
- Cached: Cache reads.
- Direct: Only the previous read is cached.
- -strpszM : Stripe size so -strpsz64 means 64kb stripe size.
- Hsp[E0:S0] : Choose this drive to be a hot-spare
Set controller to use “WriteBack, ReadAdaptive, Direct, No Write Cache if Bad BBU” policy
/opt/MegaRAID/MegaCli/MegaCli64 -LDSetProp WB -Lall -aAll
/opt/MegaRAID/MegaCli/MegaCli64 -LDSetProp ADRA -Lall -aAll
/opt/MegaRAID/MegaCli/MegaCli64 -LDSetProp Direct -Lall -aAll
/opt/MegaRAID/MegaCli/MegaCli64 -LDSetProp NoCachedBadBBU -Lall -aAll
