DELL 34XX User Manual

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Parameter
Description
capacity
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: Add a space 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
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. 
The preferred RAID controller module 
ownership of a virtual disk is the RAID 
controller module that currently owns the disk 
group.
cacheReadPrefetch
The setting to turn on or turn off cache read 
prefetch. To turn on cache read prefetch, set this 
parameter to TRUE. To turn off cache read 
prefetch, set this parameter to FALSE.
segmentSize
Amount of data (in kilobytes) 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.
usageHint
The settings for both the cacheReadPrefetch 
parameter and the segmentSize parameter 
should be the default values. The default values are 
based on the typical I/O usage pattern of the 
application that is using the virtual disk. Valid values 
are fileSystem, dataBase, or multiMedia.
dssPreAllocate
The setting to make sure that reserve capacity is 
allocated for future segment size increases. The 
default value is TRUE.
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