Partition And Format The Logical Drive; Raid Level Migration - Promise Technology 1000f series Product Manual

See also "Critical & Offline Disk Arrays" on page 394.

Partition and Format the Logical Drive

Like any other type of fixed disk media in your system, a RAID logical drive must
also be partitioned and formatted before use. Use the same method of
partitioning and formatting on an logical drive as you would any other fixed disk.
Depending on the operating system you use, there may or may not be various
capacity limitations applicable for the different types of partitions.

RAID Level Migration

To migrate a disk array is to do one or both:
• Change its RAID level
• Increase the number of disk drives (sometimes called Expansion)
On VessRAID, RAID level migration is performed on the disk array but it applies
to the logical drives. Migration takes place on an existing Functional disk array
without disturbing the existing data. While the disk array is migrating, you can
access the data as before. When migration is complete, your disk array will have
a different RAID level and/or a larger capacity.
In most cases, you must add one or more physical drives during the migration
process. You can never reduce the number of physical drives.
The tables below show the migration options for a source logical drive according
to its RAID level. The available target RAID levels are shown with their
requirements.
See "Migrating a Disk Array" on page 162 or page 237.
Chapter 9: Technology Background
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