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Sun Blade T6340 Server Module Installation and Administration Guide • April 2010
The on-board disk controller can create as many as two hardware RAID volumes.
The controller supports either two-disk RAID 1 (integrated mirror, or IM) volumes,
or up to eight-disk RAID 0 (integrated stripe, or IS) volumes.
Note –
Due to the volume initialization that occurs on the disk controller when a
new volume is created, properties of the volume such as geometry and size are
unknown. RAID volumes created using the hardware controller must be configured
and labeled using
format
(1M) prior to use with the Solaris Operating System. See
“To Configure and Label a Hardware RAID Volume for Use in the Solaris Operating
System” on page 46
, or the
format
(1M) man page for further details.
Volume migration (relocating all RAID volume disk members from one server
module to another server module) is not supported. If you must perform this
operation, contact your service provider.
RAID Technology
RAID technology enables the construction of a logical volume, made up of several
physical disks, in order to provide data redundancy, increased performance, or both.
The on-board disk controller supports both RAID 0 and RAID 1 volumes.
This section describes the RAID configurations supported by the on-board disk
controller:
■
Integrated stripe, or IS volumes (RAID 0)
■
Integrated mirror, or IM volumes (RAID 1)
Integrated Stripe Volumes (RAID 0)
Integrated stripe volumes are configured by initializing the volume across two or
more physical disks, and sharing the data written to the volume across each physical
disk in turn, or
striping
the data across the disks.
Integrated stripe volumes provide for a logical unit (LUN) that is equal in capacity
to the sum of all its member disks. For example, a three-disk IS volume configured
on 72-gigabyte drives will have a capacity of 216 gigabytes.