Avago Technologies LSI SAS 3041E-R - Manual (Page 104)

6-6 Integrated RAID Configuration Utility
Version 1.3 Copyright © 2001, 2002, 2007 by LSI Logic Corporation. All rights reserved.
volume type. The main difference from the CREATE command is that
with the AUTO command you do not specify SCSI ID values for disks to
use in the volume. CFGGEN automatically creates the volume with the
first usable disks it finds. Firmware and hardware limitations for the family
of controllers limit the number of configurations that are possible.
When a disk drive is added to an IM, IME, or IS volume, its entire storage
capacity may or may not be used, depending on drive capacity and
volume capacity. For example, if you add a 36 Gbyte disk drive to a
volume that only uses 9 Gbytes of capacity on each disk drive, the
remaining 27 Gbytes of capacity on the disk drive are unusable.
When you create an IM volume with the AUTO command, the first disk
found is assigned as the primary disk drive. If the controller is allowed to
resync the disk drives, the data on the primary disk drive will be available
by accessing the newly created volume.
CFGGEN follows these rules when creating IM, IME, and IS volumes and
hot spare disks with the AUTO command:
1. All disks that are part of a volume or a hot spare for a volume must
be connected to the same controller.
2. IM, IME, and IS volumes are supported.
3. Only two volumes per controller can be created.
4. SAS and SATA drives cannot be mixed in a volume. With the AUTO
command, all drives used must be the same type as the first
available disk found.
5. The total number of disks in a volume, including hot spare disks,
cannot exceed eight for LSI1064/1064E and LSI1068/1068E
controllers, and the total number of disks combined for two volumes
cannot exceed ten.
6. An IM volume must have exactly two disks.
7. An IME volume can have three to six disks for an LSI SCSI controller,
and three to eight disks for an LSI SAS controller, as long as rules
4 and 5 are not violated.
Command Line –
cfggen auto [qsync] [noprompt]