Sas Raid (Megaraid 9260-16I/9280-16I4E) - Acer Altos T350 F2 Faq

Altos T350 F2 FAQ (Frequently Asked Questions)

20. SAS RAID (MegaRAID 9260-16i/9280-16i4e)

1. What RAID features can MegaRAID support?
ANSWER: Please refer to the table below.
Features
SAS BP LED Control
(through SGPIO)
Hardware RAID
Cache Memory of RAID
BBU (Battery Backup Unit)
Connector
Global Hot Spare
Dedicated Hot Spare
Audible Alarm
RAID Volume Support > 2 TB
Background Initialization
Disk Coercion
NCQ (Native Command
Queuing)
UEFI/EFI Support
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.
The coercion algorithm options are:
Options
None
MegaRAID
9260-16i
Yes
Yes
512 MB
Yes
Mini SAS 4i
connector
(SFF-8087)
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Description
The software does not coerce the drive
capacity.
MegaRAID
NOTE
9280-16i4e
Yes
Yes
512 MB
Yes
Mini SAS 4i
connector
(SFF-8087)
Yes
Yes
Yes
Yes 1
Yes 2
Yes 3
Yes 4
Yes
Default
57
Note