Compaq StorageWorks HSZ70, Installation Manual, Page: 75 / 168

Creating Your Storage Configuration with the CLI 6-19
Compaq Confidential – Need to Know Required
Writer: Robert Young Project: HSZ70 Solutions Software V7.7 for Novell NetWare - PCI Comments:
Part Number: AA-R8JUE-TE File Name: g-ch6 Creating Your Storage Configuration with the CLI.doc Last Saved On: 5/17/00 9:16 AM
Adding Individual Disks as Logical Units
To use an individual disk in a RA7000/ESA10000 subsystem, you must
initialize it and then add it as a logical unit.
Initializing Individual Disks
Before putting an individual disk into service as a logical unit, you must
initialize it. The INITIALIZE command copies controller metadata onto a
small amount of disk space available on the disk and makes this space
inaccessible to the host.
When you initialize a disk, you can specify a chunksize. A chunksize is the
number of blocks of data that is transferred at one time. By using the default
chunksize, the controller will optimize the chunksize by selecting a number
equal to the number of blocks in one track of disk data. Compaq recommends
using the default chunksize.
HSZ70 > INITIALIZE DISK40100 CHUNKSIZE=DEFAULT
HSZ70 > INITIALIZE DISK50100 CHUNKSIZE=DEFAULT
Adding as Logical Units
If you require individual Disks to be available to the host as Logical Units, you
must identify the Disks as Host Logical Units by using the ADD UNIT
command.
HSZ70 > ADD UNIT D4 DISK40100
HSZ70 > ADD UNIT D5 DISK50100
In this example, disks DISK40100 and DISK50100 were identified to the host
as units D4 (Target 0, LUN 4) and D5 (Target 0, LUN 5) respectively.