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Using the Storage Management Service 153
[writepolicy=<wb| wt| wc| nwc>] Parameter (Optional)
Different controllers support different write policies. See the online help for more information. The
following table indicates how to specify the [writepolicy=<wb| wt| wc| nwc | fwb>] parameter for
each of the write policies.
[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 physical 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
Table 8-20. Read Policy Paramaters
Read Policy readpolicy=ra | ara | nra | rc | nrc
Parameter Specification
Read ahead readpolicy=ra
Adaptive read ahead readpolicy=ara
No read ahead readpolicy=nra
Read cache readpolicy=rc
No read cache readpolicy=nrc
Table 8-21. Write Policy Parameters
Write Policy writepolicy=wb | wt | wc | fwb | nwc
Parameter Specification
Write–back cache writepolicy=wb
Write–through cache writepolicy=wt
Write cache writepolicy=wc
Force write back writepolicy=fwb
No write cache writepolicy=nwc