Avago Technologies SAS 9300-4i Host Bus Adapter - Manual (Page 32)

LSI Corporation
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SAS-3 Integrated RAID Solution User Guide
November 2012 Appendix A: Using the SAS-3 Integrated RAID Configuration Utility
Commands
A.3.1 Common Command-Line Parameters
This section describes command-line parameters that are common to more than one command.
 <controller_#>
The unique controller number that the program assigns to each PCI function found on supported controller chips
in the system, starting with controller # 0. For example, in a system containing two LSISAS3008 controllers,
controller # 0 references the first controller and controller # 1 references the other controller. Use the LIST
command to view a list of controllers connected to the system and the controller number for each controller.
Valid controller number values are 0 to 255 (decimal).

<Enclosure:Bay>
The enclosure and bay (or slot) of a peripheral device attached to the bus. The argument must use a colon ( : ) as a
separator and must follow the Enclosure:Bay format. Enclosure is a 16-bit EnclosureHandle value set by the I/O
controller (IOC). A value of 0 is invalid. Bay/Slot is a 16-bit slot value set by the IOC. Use the DISPLAY command to
determine the enclosure number and slot number of a drive.
A.3.2 CREATE
The CREATE command creates Integrated RAID volumes on LSI SAS-3 controllers.
When you add a disk to an Integrated RAID volume, the volume might not use all of the disk’s storage capacity. For
example, if you add a 300-GB disk drive to a volume that only uses 200 GB of capacity on each disk drive, the volume
does not use the remaining 100 GB of capacity on the disk drive.
The disk identified by the first Enclosure:Bay on the command line becomes the primary disk drive when you create an
Integrated Mirroring (RAID 1) volume. If the controller resynchronizes the disk drives, the data on the primary disk
drive becomes available when you access the newly created volume.
When the IR firmware creates a RAID 1 volume, it starts a background initialization of the volume. Use the STATUS
command to monitor the status of the initialization.
The following restrictions and defaults apply when you create Integrated RAID volumes and hot spare disks:
 All disks that are part of a volume, including hot spares for that volume, must be connected to the same LSI SAS-3
controller.
 The supported RAID levels are RAID 0, RAID 1, RAID 1E, and RAID 10.
 You can create a maximum of two Integrated RAID volumes per LSI SAS-3 controller.
 The maximum and minimum disk drives per RAID level are as follows:
— RAID 0: Max = 10; Min = 2.
— RAID 1: Max = 2; Min = 2.
— RAID 1E: Max = 10; Min = 3.
— RAID 10: Max = 10; Min = 3.
 SAS3IRCU does not permit you to create an Integrated RAID volume that combines SAS and SATA hard disk drives.
 SAS3IRCU does not permit you to create an Integrated RAID volume that combines solid-state drives (SSDs) and
hard disk drives.
 SAS3IRCU supports disk drives with 512-byte sectors and disk drives with 4-KB sectors. However, an Integrated
RAID volume must use all 512-byte-sector drives or all 4-KB-sector drives. You cannot combine the two types of
drives in a single Integrated RAID volume.
NOTE Some operating systems do not fully support 4-KB-sector drives. Refer to the documentation for
the operating system you are using.