Users Guide
Read, Write, Cache and Disk Cache Policy
Table A-35. Read, Write, and Cache Policy Supported by the SAS 5/iR and SAS 6/iR Controllers
Enclosure Support
Table A-36. Enclosure Support on the SAS 5/iR and SAS 6/iR Controllers
Supported Features on the Non-RAID 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"
l "Connector Tasks"
l "Physical Disk Tasks"
l "Virtual Disk Tasks"
l "Enclosure Support"
For enclosure-supported tasks, see "Enclosure and Backplane Features."
Controller Tasks
Concatenation
No
No
RAID 0
Yes
Yes
RAID 1
Yes
Yes
RAID 5
No
No
RAID 10
No
No
RAID 50
No
No
RAID 6
No
No
RAID 60
No
No
Read, Write, and Cache Policy
SAS 5/IR
SAS 6/iR
Cache settings
No
No
Read Policy
Yes
Yes
Read Ahead (Enabled)
No
No
Adaptive Read Ahead
No
No
No Read Ahead (Disabled)
Yes
Yes
Write Policy
Yes
Yes
Write Back (Enabled)
No
No
Write Through (Disabled)
Yes
Yes
Force Write Back (Enabled Always)
No
No
Write Cache Enabled Protected
No
No
Cache Policy
No
No
Disk Cache Policy
No
No
Cache I/O
No
No
Direct I/O
No
No
Enclosure Support
SAS 5/IR
SAS 6/iR
Can an enclosure be attached to this controller?
No
No