HP StorageWorks HSG60 and HSG80 Array Controller and Array Controller Software Command Line Interface Reference Guide (EK-G80CL-RA. C01, March 2005)

CLI Command Descriptions
143HP StorageWorks HSG60 and HSG80 Array Controller and Array Controller Software
Command Line Interface Reference Guide
Note: The initial premise that is published in some customer forums suggesting the use
of prime numbers is derived from a modeling technique that identifies how to best
optimize performance without regard to the implementation of the chunking
algorithms internal to the controller. Testing and experience shows that critical
boundaries that degrade the unit performance are at times experienced. Adjusting the
actual chunk size to an adjacent number divisible by 8 (from the selected prime
number) achieves the results of the modeling techniques and alleviates the potential for
degraded performance.
DESTROY (default)
NODESTROY
Controls how the metadata on the initialized container is to be handled.
Note: The DESTROY and NODESTROY switches are valid only with striped mirrorsets
and mirrorsets.
■ Specify NODESTROY to preserve forced error metadata during the
initialization process. Use the NODESTROY switch only if a unit is to be
created from disk drives reduced from mirrorsets. This allows the data on
the container to be accessed by a mirrorset or striped mirrorset unit. The
NODESTROY switch is not valid for RAIDsets, simple stripesets, and
single-disk configurations.
■ Specify DESTROY to overwrite user data and forced error flags during the
initialization.
DESTROY_MBR
Eliminates the factory-written master boot record (MBR) block information
on HP factory-shipped disks and allows you to create a single unallocated
partition on a new disk device.
Caution: After an INITIALIZE DISKnnnnn DESTROY_MRB is
issued, the command writes data into the data area of the disk device.