User's Manual

Virtual Disks 261
Virtual Disk Task: Reconfigure (Step 2 of 3)
Does my controller support this feature? See Supported Features .
This screen enables you to select the RAID level and size for the reconfigured
virtual disk.
If you clicked Expand Capacity in the previous step, this screen allows you to
expand the capacity of the virtual disk. The Expand Capacity option appears
only for PERC H310, H700, H710, H710P, PERC H800, and H810 controllers
with firmware 7.1 or above.
To Reconfigure a Virtual Disk (Changing the RAID Level and Size): Step 2 of 3
1 Select the new RAID level for the virtual disk—The available RAID levels
depend on the number or physical disks selected and the controller. The
following describes possible RAID levels:
– Depending on the controller,
Concatenated enables you to combine
the storage capacity of several disks or to create a virtual disk using
only a single physical disk. For information on whether the controller
supports a single physical disk or two or more when using
Concatenated , see Number of Physical Disks per Virtual Disk. Using
Concatenated does not provide data redundancy nor does it affect
the read and write performance.
– Select
RAID 0 for striping—This selection groups n disks together as
one large virtual disk with a total capacity of n disks. Data is stored to
the disks alternately so that they are evenly distributed. Data
redundancy is not available in this mode. Read and write performance
is enhanced.
– Select
RAID 1 for mirroring disks—This selection groups two disks
together as one virtual disk with a capacity of one single disk. The data
is replicated on both disks. When a disk fails, the virtual disk
continues to function. This feature provides data redundancy and
good read performance, but slightly slower write performance. Your
system must have at least two disks to use RAID 1.
– Select
RAID 5 for striping with distributed parity—This selection
groups n disks together as one large virtual disk with a total capacity of
(n-1) disks. When a disk fails, the virtual disk continues to function.