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1 Overview
The disk array system uses groups of inex-
pensive disks to provide flexibility when
balancing data availability, access rate, and
capacity management needs.
High data availability is achieved by using
the fault tolerance features of RAID
(Redundant Array of Inexpensive Disks);
hot spare disks with automatic on-line
rebuild; hot swap disks, and power supplies;
independent SATA disk controllers; and
dual host controllers. Our confidence in the
disk array system is backed by a three year
warranty.
A high data access rate is achieved by combining the individual data rates of SATA disks in a
RAID configuration. SATA disks lack some of the features of SCSI disks but are just as fast
when used with a high performance RAID controller. In the disk array system, RAID is con-
trolled by a high performance CPU, which transfers data through dual host interfaces at the max-
imum possible rate.
Flexible data capacity management is achieved with on-line RAID expansion, RAID capacity
division into slices, and multiple logical RAIDs. Management is performed through front panel,
RJ-45, or RS-232 interfaces.
