
USC and USC-LCE Operations 73
Select the Express Wizard
The Express Wizard enables you to select the RAID level only. The Express
Wizard then selects a virtual disk configuration for the user which
implements the selected RAID level and optionally enables you to assign a
hot spare. Select Express Wizard to quickly create a virtual disk using
recommended settings. This wizard is not available on all controllers.
NOTE: If the available physical disks are using both Serial Attached
SCSI
(SAS) and Serial ATA (SATA) protocols, it is recommended that you use
the Advanced Wizard.
Select Advanced Wizard
The Advanced Wizard enables you to specify which protocol is used when
creating the disk pool for the virtual disks. A disk pool is a logical grouping of
disks attached to a RAID controller on which one or more virtual disks can be
created. In addition to the RAID level, the Advanced Wizard allows more
flexibility with physical disk selection, span configuration, cache policy, and
other virtual disk attributes. Select Advanced Wizard to specify all virtual disk
settings.
NOTE: It is recommended that you have a good knowledge of RAID and your
hardware configuration to use the Advanced Wizard.
Click Next after making the selection.
Select Basic Settings
Select the RAID type for the virtual disk from the RAID Level drop-down menu:
•
RAID 0
— Stripes data across the physical disks. RAID 0 does not
maintain redundant data. When a physical disk fails in a RAID 0 virtual
disk, there is no method for rebuilding the data. RAID 0 offers good read
and write performance with 0 data redundancy.
•
RAID 1
— Mirrors or duplicates data from one physical disk to another.
If
a physical disk fails, data can be rebuilt using the data from the other
side of the mirror. RAID 1 offers good read performance and average write
performance with good data redundancy.
•
RAID 5
— Stripes data across the physical disks, and uses parity
information to maintain redundant data. If a physical disk fails, the data
can be rebuilt using the parity information. RAID 5 offers good read
performance and slower write performance with good data redundancy.
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