IBM PC Server 520, Руководство пользователя

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RAID Technology
This monitoring program allows you to view the ServeRAID
configuration and associated devices, reassign a drive to replace a
defunct drive, create a logical drive, create an array, and delete an
array.
In addition, in an array that contains only one logical drive, and the
total number of logical drives in all arrays is less than 7, you can
change the logical drive RAID level from level 0 to level 5 (or level
5 to level 0).
See the README file on the Device Driver/Administration and
Monitoring diskette for instructions on installing and using this
monitoring utility.
RAID Technology
RAID is the technology of grouping several hard disk drives in a
server into an array that can be defined as a single logical drive.
This logical drive then appears to the operating system as a single
physical drive. This grouping technique greatly enhances
logical-drive capacity and performance. In addition, if one of the
hard-disk drives fails (becomes defunct) the system continues to
run, with no operator intervention required, at reduced
performance. You can replace the defunct drive without turning off
the server (hot-swap). For more information about hot-swappable
hard disk drives, see “Installing a Drive in Bank C” on page 235.
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PC Server 520 User's Handbook for PCI/Micro Channel