Reference Guide

You can create a RAID-5 virtual disk of 500 MB with a stripe size of 16 KB on a PERC 3/QC controller. The name of the
virtual disk is vd1 and it resides on connector 0 of controller 1. Because the virtual disk is a RAID-5, it requires at least
three physical disks. In this example, you specify four physical disks. These are physical disks 0 through 3. The virtual
disk has read-ahead, write–through caching, and cache I/O policies.
To create a virtual disk:
omconfig storage controller action=createvdisk controller=1 raid=r5 size=500m
pdisk= 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 physical disk
selection. Storage Management supplies default values for all other unspecified parameters. For more information on
read, write, and cache policies that are supported by the controller, see the Dell OpenManage Online Help .
Parameter Specification For Creating And Reconfiguring Virtual Disk
The following table displays how to specify the omconfig storage controller action=createvdisk parameters:
Table 93. Parameters And Types
Parameters Type
controller=id Required
raid=<c | r0 | r1 | r1c | r5 | r6 | r10 | r50 | r60> Required
size=<number | max | min> Required
pdisk=<connector:targetID,connector:targetID,.....> Required
[stripesize=<2k b| 4kb | 8kb | 16kb | 32kb | 64kb | 128kb>] Optional
[cachepolicy=<d | c>] Optional
[readpolicy=<ra | nra | ara | rc | nrc>] Optional
[writepolicy=<wb | wt | wc | nwc | fwb>] Optional
[name=<string>] Optional
[spanlength=<n>] parameter Optional
controller=id parameter
Specify the controller ID as reported by the omreport storage controller command. For example,controller=2
raid=<c | r0 | r1 | r1c | r5 | r6 | r10 | r50 | r60>
Use the raid=<c | r0 | r1 | r1c | r5 | r6 | r10 | r50 | r60> parameter to specify concatenation or a RAID level for a virtual disk.
Different controllers support different RAID levels. For more information about RAID levels a controller supports and for
general information about RAID levels and concatenation, see the Dell OpenManage Online Help . The following table
displays how to specify the raid=n parameter for each RAID level and concatenation.
Table 94. Raid Level And Concatenation
RAID Level or Concatenation raid=n Parameter Specification
RAID-0 raid=r0
RAID-1 raid=r1
RAID-5 raid=r5
RAID-6 raid=r6
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