To disable the video performance optimization feature, reverse the disable and enable values noted above, set the queue depth to automatic, and set mnpd to 0, as in the second example command.

Example commands:

=> ctrl slot=5 modify dpo=enable elevatorsort=disable irp=enable queuedepth=16 mnpd=25

=> ctrl slot=3 modify dpo=disable elevatorsort=enable irp=disable queuedepth=automatic mnpd=0

Creating a logical drive

Syntax:

<target> create type=ld [parameter=value]

<target> is usually a controller, but it can be an array if you are creating an additional logical drive on an existing array.

If you want to create a logical drive on a group of physical drives that are not yet assigned to an array, you do not have to build the array first. In the CLI, unlike in the GUI, the array is created automatically at the same time as the logical drive.

The standard parameters used when creating a logical drive are described in the following table. If you do not specify a particular parameter, the CLI uses the appropriate default value.

ParameterAcceptable valuesComments

 

 

 

drives

[#:]#:#,[#:]#:#,...[#:]#:#–[#:]#:#

The default setting is all.

 

allallunassigned

 

raid

011adm1+01+0adm550660?

The default setting is the highest RAID

 

 

level that the controller model and

 

 

number of drives can support, except

 

 

50 or 60 (which must be specified

 

 

deliberately).

 

 

 

numberparityg

2#

The default value is 2.

roups

 

 

ss

81632641282565121024default

Units are KB.*

 

?

The default setting depends on the

 

 

RAID level.

 

 

 

size

#minmaxmaxmbr?

This parameter determines the

 

 

desired size of the logical drive.

 

 

Units are MB.*

 

 

The default setting is max.

sectors

3263default?

The default setting depends on the

 

 

operating system.

aa

enabledisable?

The default setting is enable.

drivetype

sassatalogicalsatasaslogicalpar

 

allelscsiss_sasss_sata?

 

*Use only these units. Do not enter any extra text in the command to specify the units.

If you specify an array as the target, you can omit the drives parameter, because the drives are already implicitly defined by the array ID. This feature is useful if you are entering the command directly into the CLI console because you do not need to remember which drives belong to the array. When you write a batch file, however, it is often easier to specify every drive in the array than to parse out the array ID.

When you use the drives parameter you can list each drive individually, you can specify a drive range, or you can specify both a range and some individual drives. A drive range can span ports, boxes, and bays.

Operations 65