The following table displays how to specify the
omconfig storage controller action=createvdisk parameters:
Table 1. 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 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, see
the
Dell OpenManage Online Help. The following table displays
how to specify the
raid=n parameter for each RAID
level.
Table 2. Raid level and
parameter specification
RAID Level |
raid=n Parameter Specification |
RAID-0 |
raid=r0 |
RAID-1 |
raid=r1 |
RAID-5 |
raid=r5 |
RAID-6 |
raid=r6 |
RAID-10 |
raid=r10 |
RAID-50 |
raid=r50 |
RAID-60 |
raid=r60 |
size=<number | max
| min>
The following table displays how
to specify the size=<number | max | min>
Table 3. Size Parameter
size=<number | max | min> Parameter
Specification
|
Description |
size=<n> |
Use this specification to indicate a specific
size for the virtual disk. The virtual disk size is specified in b
(bytes), m (megabytes), or g (gigabytes). For example,
size=500m indicates that the virtual disk
is 500 MB.
|
size=max |
To create a virtual disk that is the maximum size
possible, specify
size=max. When creating an
RAID-50 virtual disk, this parameter is specified as
size=max.
|
size=min |
To create a virtual disk that is the minimum size
possible, specify
size=min.
|
PDISKID=<connector:enclosureID:targetID
| connector:targetID>
Use this parameter
to specify the physical disks to be included in the virtual disk.
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.
stripesize=<2kb | 4kb
| 8kb | 16kb | 32kb | 64kb | 128kb>
Different
controllers support different stripe sizes. For more information on
stripe sizes supported for a controller, see the
Dell OpenManage
Online Help
. All stripe sizes are specified in kilobytes. For
example, when specifying 128 KB as the stripe size, type:
stripesize=128kb
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 4. 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 5. 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 6. 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 7. 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 |