Dell PowerVault MD3260i User Manual

Page 166

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Parameter

Description

NOTE: The physicalDiskCount parameter enables you to
choose the number of physical disks to use in the disk group. You do
not need to specify the physical disks by enclosure ID and slot ID.
The RAID controller modules choose the specific physical disks to
use for the disk group.

diskGroupUserLabel

The alphanumeric identifier (including – and _) that you want to give the
new disk group. Enclose the disk group identifier in double quotes (" ").

raidLevel

RAID level of the disk group that contains the virtual disk. Valid values are
0, 1, 5 or 6.

userLabel

Name to give to the new virtual disk. You must put quotation marks (" ")
around the new virtual disk name.

physicalDiskType

Specifies the type of physical disk to use in the virtual disk. You cannot
mix physical disk types in the virtual disk. The valid physical disk type is
SAS.

capacity

The size of the virtual disk that you are adding to the storage array. Size is
defined in units of bytes, KB, MB, GB, or TB.

NOTE: A space must be added between the last digit and the size
(bytes, KB, MB, or GB) for values greater than 9. If you do not specify
a capacity, all the available physical disk capacity in the disk group
is used. If you do not specify the capacity unit, bytes is used as the
default unit.

owner

The RAID controller module that owns the virtual disk. Valid RAID
controller module identifier values are 0 and 1. The identifier value is 0
for the RAID controller module on the top and 1 for the RAID controller
module on the bottom when viewed from the rear of the enclosure. If you
do not specify an owner, the RAID controller module firmware
determines the owner.

NOTE: The owner parameter defines which RAID controller module
owns the virtual disk.

cacheReadPrefetch

The setting to turn on or turn off cache read prefetch. To turn off cache
read prefetch, set this parameter to FALSE. To turn on cache read
prefetch, set this parameter to TRUE.

segmentSize

Amount of data (in KB) that the RAID controller module writes on a single
physical disk in a virtual disk before writing data on the next physical
disk. Valid values are 8, 16, 32, 64, 128, 256, or 512. For information
about the segmentSize parameter, see Using The Auto Configure
Command.

enclosureLossProtect

Specifies that enclosure loss protection is enforced when creating the
disk group. To enforce enclosure loss protection, set this parameter to
TRUE. The default setting is FALSE. For information about the
enclosureLossProtect parameter, see Enclosure Loss Protection.

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