Compaq HSG80 - StorageWorks RAID Array Controller Spezifikationen PDF herunterladen (Seite 245)

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Compaq HSG80 Array Controller ACS Version 8.4 Configuration and CLI Reference Guide

To create a partition, specify a percentage of the container’s total capacity. The entire

container is then divided into segments equal to the percentage specified. For

example, if SIZE=20, the container is divided into five (1.0/0.2=5) equal segments.

The resulting partition is slightly smaller than the size specified because metadata

also occupies some of the partition’s allocated space.

Specify LARGEST in the following situations:

■ To have the controller create the largest partition possible from unused space on

the disk or storageset.

■ To create the last partition on a container. Because the remaining space is not

equal to an exact percentage value, specifying LARGEST allows you to optimize

use of the remaining space.

CAPACITY=

CYLINDERS=

HEADS=

SECTORS_PER_TRACK=

CAPACITY may be specified 1 to the maximum container size (in blocks);

CYLINDERS may be specified 1 to16,777,215; HEADS may be specified 1 to 255;

and SECTORS_PER_TRACK may be specified 1 to 255.

NOTE: These are used to set the SCSI parameters reported to the host. They

should not be used unless there is a compatibility problem with the existing

defaults.

The geometry parameter switches for the INITIALIZE command are ignored when

you create partitions. The parameters supplied with the CREATE_PARTITION

command are used by the unit.

Example

The next example shows how to create a RAIDset named RAID9 and divide it into

four equal parts. It also creates host-addressable units for each partition.

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Compaq HSG80 - StorageWorks RAID Array Controller Spezifikationen Seite 245