User's Manual

84 Controllers
• Read, write, and cache policies —The manner in which a controller reads
and writes data can vary. The read, write, and cache policies have
implications for data encryption and system performance. See RAID
Controller Read, Write, Cache, and Disk Cache Policy.
•
Check consistency —A check consistency determines the integrity of a
virtual disk’s redundant data. When necessary, this feature rebuilds the
redundant information. See Maintain Integrity of Redundant Virtual
Disks.
•
Cluster Support —Storage Management supports PERC 4/DC and 4e/DC
controllers that have Microsoft
Cluster Server (MSCS) enabled. See
Cluster-enabled RAID Controllers.
•
Patrol Read —Patrol Read identifies disk errors in order to avoid disk
failures and data loss or corruption. See Set Patrol Read Mode for more
information.
•
Disk migration or foreign configurations —Some controllers enable you
to move physical disks that contain one or more virtual disks to another
controller. The receiving controller is able to recognize and import the
foreign configuration (virtual disks). See Foreign Configuration
Operations for more information.
Controller-supported RAID Levels
RAID controllers may support different RAID levels. For information on
which RAID levels a controller supports, see the supported RAID levels
section for the controller in Supported Features.
Controller-supported Stripe Sizes
When creating a virtual disk, you may need to specify the stripe size for the
virtual disk. Different controllers have different limitations on the stripe sizes
they can support. For information on the stripe sizes a controller supports, see
the virtual disk specifications section for the controller in Supported Features.