Inspur 3008 Series Configuration Manual page 12

Write Policy = Write Back
-
IO Policy = Direct
-
Disk Cache = Enable
-
Microsemi RAID controller card:

Read Caching/Write Caching = Controller Cache
-
Drive Write Cache = Enable
-
2 Optimal Performance Settings for SSDs
RAID levels without parity (RAID 0/RAID 1/RAID 10)
Broadcom RAID controller card:

Read Policy = Normal (No Read Ahead)
-
Write Policy = Write Through
-
IO Policy = Direct
-
Disk Cache = Unchanged (not changeable)
-
Microsemi RAID controller card:

Read Caching/Write Caching = SSD IO bypass
-
Drive Write Cache = Enable
-
RAID levels with parity (RAID 5/RAID 6/RAID 50/RAID 60)
1. Small block random read and write:
Broadcom RAID controller card:

Read Policy = Normal (No Read Ahead)
-
Write Policy = Write Through
-
IO Policy = Direct
-
Disk Cache = Unchanged (not changeable)
-
Microsemi RAID controller card:

Read Caching/Write Caching = SSD IO bypass
-
Drive Write Cache = Enable
-
2. Large block sequential read and write:
Broadcom RAID controller card:

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