Intergraph InterRAID-12, Hardware User'S Manual

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53
DAC960 System Drive Size Limit
If your system has InterRAID disk arrays that use a DAC960P or DAC960PD RAID
controller board with version 2.x (or previous) firmware, be aware of the following
limitations:
u
You cannot create a system (logical) drive larger than 32,768 MB.
u
You can create a pack larger than 32,768 MB. However, if you do so, and then try to
create a system drive larger than 32,768 MB, the attempt to create the system drive will
fail.
WARNING If you try to create a system drive larger than 32,768 MB, the Myle x DACCF utility
program will insert your original drive size (default) and not create a system drive.
You can work around these limitations as follows:
1. Create one or more packs, with each pack containing up to eight disk drives of any size,
as required.
2. Divide each pack into system drives, with each system drive less than or equal to 32,768
MB.
3. Initialize the system drives.
If you require the entire amount of disk space to appear as a single system drive, rather than
as multiple 32 GB (or smaller) system drives, you can combine the smaller drives into a
logical volume using the Windows NT Disk Administrator. Combining the drives in this
way does not affect the speed or capacity of the disk subsystem.
NOTE The terms system drive and logical drive are used interchangeably.
To create a system drive:
1. You can define a maximum of eight (8) system drives per DAC960 RAID controller.
From the System Drive Definition menu, select Create System Drive. The first arranged
pack in the Pak/Drvs column highlights, and the RAID Levels display as follows.
RAID Level
RAID 0
RAID 1
RAID 5
RAID 6
RAID 7