HP StorageWorks HSG80 ACS Solution Software V8.8 for Novell NetWare Installation and Configuration Guide (AA-RV1MA-TE, March 2005)

Planning Storage Configurations

86 HSG80 ACS Solution Software V8.8 for Novell NetWare Installation and Configuration Guide

Plan the mirrorset members, and plan the stripeset that contains them. Review the

recommendations in "Planning Considerations for Storageset", page 78, and

"Mirrorset Planning Considerations", page 80.

Storageset Expansion Considerations

Storageset Expansion allows for the joining of two of the same kind of storage

containers by concatenating RAIDsets, stripesets, or individual disks, thereby

forming a larger virtual disk which is presented as a single unit. The HP

StorageWorks HSG60 and HSG80 Array Controller and Array Controller

Command Line Interface Reference Guide describes the CLI command,

ADD

CONCATSETS,

which is used to perform concatenation.

Caution: Use the ADD CONCATSETS command only with host operating systems

that support dynamic volume expansion. Use of this command could result in

inacessible data, if the operating system cannot handle one of its disks

increasing in size.

Partition Planning Considerations

Use partitions to divide a container (storageset or individual disk drive) into

smaller pieces, each of which can be presented to the host as its own storage unit.

Figure 31 shows the conceptual effects of partitioning a single-disk container.

Figure 31: One example of a partitioned single-disk unit

You can create up to eight partitions per storageset (disk drive, RAIDset,

mirrorset, stripeset, or striped mirrorset). Each partition has its own unit number

so that the host can send I/O requests to the partition just as it would to any

1 Partition 1

2 Partition 2

3 Partition 3

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