User's Manual

Supported Features 331
Enclosure Support
Read Policy YesYesYesYesYesYes
Read Ahead (Enabled) Yes Yes Yes Yes Yes Yes
Adaptive Read Ahead Yes Yes Yes Yes Yes Yes
No Read Ahead
(Disabled)
YesYesYesYesYesYes
Write Policy Yes Yes Yes Yes Yes Yes
Write Back (Enabled) Yes Yes Yes Yes Yes Yes
Write Through
(Disabled)
YesYesYesYesYesYes
Force Write Back
(Enabled Always)
YesYesYesYesYesYes
Write Cache Enabled
Protected
No No No No No No
Cache Policy No No No No No No
Disk Cache Policy Yes Yes Yes Yes Yes No
Cache I/O NoNoNoNoNoNo
Direct I/O NoNoNoNoNoNo
Table A-27. Enclosure Support on the PERC 5/E, PERC 6/, and CERC 6/I Controllers
Enclosure Support PERC 5/E PERC 5/I PERC 6/E PERC 6/I PERC 6/I
Modular
CERC 6/I
Can an enclosure be
attached to this
controller?
Yes No Yes No No No
Table A-26. Read, Write, and Cache Policy Supported by the PERC 5/E, PERC 6/, and
CERC 6/I Controllers
(continued)
Read, Write, and Cache
Policy
PERC 5/E PERC 5/I PERC 6/E PERC 6/I PERC 6/I
Modular
CERC 6/I