請參考下表:
|
Features
|
MegaRAID
9240-4i
|
MegaRAID
9260-4i
|
MegaRAID
9271-8i
|
NOTE
|
|
SAS BP LED Control (through SGPIO)
|
N/A
|
Yes
|
Yes
|
|
|
Cache Memory of RAID
|
N/A
|
512 MB
|
1 GB
|
|
|
BBU (Battery Backup Unit)
|
N/A
|
Yes
|
Yes
|
|
|
Connector
|
Mini SAS 4i
connector (SFF-8087)
|
Mini SAS 4i
connector (SFF-8087)
|
Mini SAS 4i
connector (SFF-8087)
|
|
|
Global Hot Spare
|
Yes
|
Yes
|
Yes
|
|
|
Dedicated Hot Spare
|
Yes
|
Yes
|
Yes
|
|
|
Audible Alarm
|
No
|
Yes
|
Yes
|
|
|
RAID Volume Support > 2 TB
|
Yes
|
Yes
|
Yes
|
1
|
|
Background Initialization
|
Yes
|
Yes
|
Yes
|
2
|
|
Disk Coercion
|
Yes
|
Yes
|
Yes
|
3
|
|
NCQ (Native Command Queuing)
|
Yes
|
Yes
|
Yes
|
4
|
|
UEFI/EFI Support
|
Yes
|
Yes
|
Yes
|
|
NOTE 1. Not every OS can support disk space up to 2 TB.
NOTE 2. When RAID volume is created, it can be initialized on the background. RAID volume can be immediately available without completing the fully initialization.
NOTE 3. Drive coercion refers to the ability of the RAID controller to recognize the size of the physical drives that are connected and then force the larger drives to use only the amount of space available on the smallest drive. Drive coercion as implemented in these RAID controllers also allows an option to map out a reserved space to compensate for slightly smaller drive sizes that may be added later. This option allows 128 MB, and 1 GB of drive capacity to remain unused.
NOTE 4. More information of NCQ can be found at: http://www.serialata.org/technology/ncq.asp
