User's Manual

Controllers 83
• PERC H200, H700, and H800 controllers
• PERC H310 Adapter, PERC H310 Mini Monolithic, PERC H310 Mini
Blades, PERC H710 Adapter, PERC H710 Mini Blades, PERC H710 Mini
Monolithic, PERC H710P Adapter, PERC H710P Mini Blades, PERC
H710P Mini Monolithic, and PERC H810 Adapter controllers
RAID Controller Features
Different controllers have different features. If you have more than one
controller attached to your system, you may notice that the tasks displayed on
the controller’s Information/Configuration subtab are different for each
controller.
Controllers may also have differences in their read, write, and cache policies
as well as how they handle hot spares. You should be aware of these
differences when creating virtual disks and assigning hot spares.
The following describes some of the RAID controller features and provides
links to a more detailed explanation. For information on which controllers
support which features, see Supported Features.
• Hot spares —On RAID controllers, a hot spare is a backup for a disk that
fails. See the Protecting Your Virtual Disk with a Hot Spare.
•
Rebuilding data. You can rebuild data from a failed physical disk if the
disk is a member of a redundant virtual disk. See Rebuilding Redundant
Information.
•
Virtual disk expansion —Virtual disk expansion enables you to expand the
capacity of a virtual disk while it remains online by adding additional disks
to the virtual disk. This feature is also known as online capacity expansion
(OLCE). See Virtual Disk Tasks.
•
RAID migration —After creating a virtual disk, you can change the RAID
level. See Reconfiguring/Migrating Virtual Disks.
•
Moving physical and virtual disks to another controller —This freature
enables you to move physical and virtual disks from one controller to
another. See Moving Physical and Virtual Disks from One System to
Another.