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Creating Your Storage Configuration with the CLI 6-15
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
Creating a Mirrorset
Create mirrorsets to increase data availability and achieve data redundancy by
maintaining at least two drives that have exactly the same data. Mirrorsets
must have at least two members, and can have as many as six. This example
creates a two member mirrorset using the ADD MIRRORSET command.
HSZ70 > ADD MIRRORSET DVGRPM0 DISK10200 DISK20200
In this example,
DVGRPMO
is the name of the mirrorset, and it is followed by
a list of the disks to be included in the mirrorset. The names of the mirrorsets
are user selectable. Performance of your mirror sets will be optimized if each
mirrorset includes disks from different busses (ports) as shown in the example.
Initializing a Mirrorset
Before putting a mirrorset 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 mirrorset and makes this space inaccessible to the
host.
When you initialize a mirrorset 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 DVGRPM0