User's Manual

Table 1-7.RAIDLevelsSupportedbythePERC4/SC,4/DC,4/Di,4e/Si,4e/Di,4e/DC,and4/IMControllers

Read, Write, and Disk Cache Policy
Table 1-8.Read,WriteandDiskCachePolicySupportedbythePERC4/SC,4/DC,4/Di,4e/Si,4e/Di,4e/DC,and4/IMControllers

Enclosure Support
Table 1-9.EnclosureSupportonthePERC4/SC,4/DC,4/Di,4e/Si,4e/Di,4e/DC,and4/IMControllers
Supported Features on the CERC SATA1.5/2s and CERC SATA1.5/6ch 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 Virtual Disk Specifications
l Supported RAID Levels
l Read, Write, and Disk Cache Policy
l Enclosure Support
For enclosure-supported tasks, see Enclosure and Backplane Features.

RAID Level

PERC 4/SC

PERC 4/DC

PERC 4/DI

PERC 4e/SI

PERC 4e/DI

PERC 4e/DC

PERC 4/IM
Concatenation
Yes
Yes
Yes
Yes
Yes
Yes
No
RAID 0
Yes
Yes
Yes
Yes
Yes
Yes
No
RAID 1
Yes
Yes
Yes
Yes
Yes
Yes
Yes
RAID 5
Yes
Yes
Yes
Yes
Yes
Yes
No
RAID 10
Yes
Yes
Yes
Yes
Yes
Yes
No
RAID 50
Yes
Yes
Yes
Yes
Yes
Yes
No
RAID 6
No
No
No
No
No
No
No
RAID 60
No
No
No
No
No
No
No

Read, Write, and Disk Cache Policy

PERC 4/SC

PERC 4/DC

PERC 4/DI

PERC 4e/SI

PERC 4e/DI

PERC 4e/DC

PERC 4/IM
Cache settings
Yes
Yes
Yes
Yes
Yes
Yes
No
Read Policy
Yes
Yes
Yes
Yes
Yes
Yes
No
Read Ahead (Enabled)
Yes
Yes
Yes
Yes
Yes
Yes
No
Adaptive Read Ahead
Yes
Yes
Yes
Yes
Yes
Yes
No
No Read Ahead (Disabled)
Yes
Yes
Yes
Yes
Yes
Yes
No
Write Policy
Yes
Yes
Yes
Yes
Yes
Yes
No
Write Back (Enabled)
Yes
Yes
Yes
Yes
Yes
Yes
No
Write Through (Disabled)
Yes
Yes
Yes
Yes
Yes
Yes
No
Force Write Back (Enabled Always)
No
No
No
No
No
No
No
Write Cache Enabled Protected
No
No
No
No
No
No
No
Disk Cache Policy
Yes
Yes
Yes
Yes
Yes
Yes
No
Cache I/O
Yes
Yes
Yes
Yes
Yes
Yes
No
Direct I/O
Yes
Yes
Yes
Yes
Yes
Yes
No

Enclosure Support

PERC 4/SC

PERC 4/DC

PERC 4/DI

PERC 4e/SI

PERC 4e/DI

PERC 4e/DC

PERC 4/IM
Can an enclosure be attached to this controller?
Yes
Yes
Yes
Yes
Yes
Yes
No