Users Guide

When reconfiguring a virtual disk, you must specify all physical disks to include in the reconfigured virtual disk. The physical disk
specification applies to physical disks in the original virtual disk and continues in the reconfigured virtual disk and to any new physical
disks being added to the reconfigured virtual disk. Some controllers allow you to remove a physical disk from a virtual disk. In this
case, do not specify to remove the physical disk.
The pdisk=<PDISKID> parameter indicates a physical disk by specifying either connector:enclosureID:targetID or connector:targetID.
Cachepolicy=<d | c>
cachepolicy=<d | c>] Parameter
Different controllers support different cache policies. The following table displays how to specify the [cachepolicy=<d | c>]
parameter for each of the cache policies.
Table 164. Cache Policy Parameters
Cache Policy cachepolicy=d | c Parameter Specification
Direct I/O cachepolicy=d
Cache I/O cachepolicy=c
Diskcachepolicy=<disabled | enabled>
Different controllers support different disk cache policies. The following table indicates how to specify the
[diskcachepolicy=<disabled | enabled>] parameter for each of the cache policies.
Table 165. Disk Cache Policy Parameters
Disk Cache Policy diskcachepolicy=disabled | enabled Parameter Specification
Disabled diskcachepolicy=disabled
Enabled diskcachepolicy=enabled
Readpolicy=<ra | nra | ara | rc | nrc>]
Different controllers support different read policies. The following table displays how to specify the readpolicy=<ra | nra | ara | rc |
nrc> parameter for each of the read policies.
Table 166. Read Policy Parameters
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
Writepolicy=<wb | wt | wc | nwc>
Different controllers support different write policies. The following table displays how to specify the writepolicy=<wb | wt | wc | nwc
| fwb> parameter for each of the write policies.
Table 167. Write Policy Parameters
Write Policy writepolicy=wb | wt | wc | fwb | nwc Parameter Specification
Write-back cache writepolicy=wb
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