User's Manual

174 Using the Storage Management Service
[name=<string>] Parameter (Optional)
Use this parameter to specify a name for the virtual disk. For example:
name=VirtualDisk1
NOTE: The CERC SATA 1.5/2s controller does not allow you to specify a virtual disk name. The virtual disk will be
created with a default name.
[spanlength=<n>] Parameter (Required for RAID 50)
Use this parameter to specify the number of array disks to be included in each stripe. This parameter only
applies to RAID 50 virtual disks. If you are not creating a RAID 50 virtual disk, do not specify this
parameter. For example:
spanlength=3
Example Syntax
For example, you may want to create a RAID 5 virtual disk on a PERC 3/QC controller. The online help
will help you understand which read, write, and cache policies are supported by this controller. In this
example, you decide to create a virtual disk with the following read, write, and cache policy:
• Read-ahead
• Write–through caching
• Cache I/O
The virtual disk will be 500 MB with a stripe size of 16 KB. The name of the virtual disk will be vd1 and it
will reside on connector 0 of controller 1. Because the virtual disk will be a RAID 5, it requires at least
three array disks. In this example, you specify four array disks. These are array disks 0 through 3.
To create the virtual disk described in this example, enter:
omconfig storage controller action=createvdisk controller=1 raid=r5
size=500m adisk=0:0,0:1,0:2,0:3 stripesize=16kb cachepolicy=c
readpolicy=ra writepolicy=wt
The only parameters that require specification are for the controller, RAID level, virtual disk size, and
array disk selection. Storage Management supplies default values for all other unspecified parameters.
omconfig Set Controller Rebuild Rate
Use the following omconfig command syntax to set the controller rebuild rate:
Complete Syntax
omconfig storage controller action=setrebuildrate controller=id rate=
<0 to 100>
where id is the controller ID as reported by the omreport storage controller command.