User's Manual
Supported RAID Levels
Table A-7. RAID Levels Supported by the PERC 5/E, PERC 5/i, PERC 6/E, PERC 6/I, and CERC 6/I Controllers
Read, Write, Cache and Disk Cache Policy
Table A-8. Read, Write, and Cache Policy Supported by the PERC 5/E, PERC 5/i, PERC 6/E, PERC 6/I, and CERC 6/I Controllers
Enclosure Support
Table A-9. Enclosure Support on the PERC 5/E, PERC 5/i, PERC 6/E, PERC 6/I, and CERC 6/I Controllers
Supported Features on the SAS 5/iR and SAS 6/iR Controllers
This section identifies the controller-supported features and whether or not an enclosure can be attached to the controller.
l "Controller Tasks"
l "Battery Tasks"
Maximum number of physical disks in a RAID 60
Not Applicable
Not Applicable
256
256
256
Minimum number of physical disks in a RAID 6
Not Applicable
Not Applicable
4
4
4
Minimum number of physical disks in a RAID 60
Not Applicable
Not Applicable
8
8
8
RAID Level
PERC 5/E
PERC 5/I
PERC 6/E
PERC 6/I
CERC 6/I
RAID 0
Yes
Yes
Yes
Yes
Yes
RAID 1
Yes
Yes
Yes
Yes
Yes
RAID 5
Yes
Yes
Yes
Yes
Yes
RAID 10
Yes
Yes
Yes
Yes
Yes
RAID 50
Yes
Yes
Yes
Yes
Yes
RAID 6
No
No
Yes
Yes
Yes
RAID 60
No
No
Yes
Yes
Yes
Read, Write, and Cache Policy
PERC 5/E
PERC 5/I
PERC 6/E
PERC 6/I
CERC 6/I
Cache settings
Yes
Yes
Yes
Yes
Yes
Read Policy
Yes
Yes
Yes
Yes
Yes
Read Ahead (Enabled)
Yes
Yes
Yes
Yes
Yes
Adaptive Read Ahead
Yes
Yes
Yes
Yes
Yes
No Read Ahead (Disabled)
Yes
Yes
Yes
Yes
Yes
Write Policy
Yes
Yes
Yes
Yes
Yes
Write Back (Enabled)
Yes
Yes
Yes
Yes
Yes
Write Through (Disabled)
Yes
Yes
Yes
Yes
Yes
Force Write Back (Enabled Always)
Yes
Yes
Yes
Yes
Yes
Write Cache Enabled Protected
No
No
No
No
No
Cache Policy
No
No
No
No
No
Disk Cache Policy
Yes
Yes
Yes
Yes
No
Cache I/O
No
No
No
No
No
Direct I/O
No
No
No
No
No
Enclosure Support
PERC 5/E
PERC 5/I
PERC 6/E
PERC 6/I
CERC 6/I
Can an enclosure be attached to this controller?
Yes
No
Yes
No
No