Read, Write, Cache And Disk Cache Policy Supported By PERC Hardware Controllers

Table 1. Read, Write, and Cache Policy Supported by PERC Hardware Controllers
Read, Write, and Cache Policy PERC H840 Adapter PERC FD33xD/FD33xS PERC H730P MX PERC H745P MX PERC H745P Front/Adapter PERC H345 Front/Adapter PERC H755 Front/Adapter PERC H755N Front
Cache settings Yes Yes Yes Yes Yes Yes Yes Yes
Read Policy Yes Yes Yes Yes Yes Yes Yes Yes
Read Ahead (Enabled) Yes Yes Yes Yes Yes Yes Yes Yes
Adaptive Read Ahead No No No No No No No No
No Read Ahead (Disabled) Yes Yes Yes Yes Yes Yes Yes Yes
Write Policy Yes Yes Yes Yes Yes Yes Yes Yes
Write Back (Enabled) Yes Yes Yes Yes Yes Yes Yes Yes
Write Through (Disabled) Yes Yes Yes Yes Yes Yes Yes Yes
Force Write Back (Enabled Always) Yes Yes Yes Yes Yes Yes Yes Yes
Write Cache Enabled Protected No No No No No No No No
Cache Policy No No No No No No No No
Disk Cache Policy Yes Yes Yes Yes Yes Yes Yes Yes
Cache I/O No No No No No No No No
Direct I/O No No No No No No No No
Table 2. Read, Write, and Cache Policy Supported by PERC Hardware Controllers
Read, Write, and Cache Policy PERC H840 Adapter PERC FD33xD/FD33xS PERC H730P MX PERC H745P MX PERC H745P Front/Adapter PERC H345 Front/Adapter PERC 755 Front/Adapter PERC H755N Front
Cache settings Yes Yes Yes Yes Yes Yes Yes Yes
Read Policy Yes Yes Yes Yes Yes Yes Yes Yes
Read Ahead (Enabled) Yes Yes Yes Yes Yes Yes Yes Yes
Adaptive Read Ahead No No No No No No No No
No Read Ahead (Disabled) Yes Yes Yes Yes Yes Yes Yes Yes
Write Policy Yes Yes Yes Yes Yes Yes Yes Yes
Write Back (Enabled) Yes Yes Yes Yes Yes Yes Yes Yes
Write Through (Disabled) Yes Yes Yes Yes Yes Yes Yes Yes
Force Write Back (Enabled Always) Yes Yes Yes Yes Yes Yes Yes Yes
Write Cache Enabled Protected No No No No No No No No
Cache Policy No No No No No No No No
Disk Cache Policy Yes Yes Yes Yes Yes Yes Yes Yes
Cache I/O No No No No No No No No
Direct I/O No No No No No No No No