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2.2 Characteristics of RAID
The characteristics of RAID depend on your application and the RAID level you use. In general,
using RAID provides Auto Hot Swap, Hot Spare and Auto Drive Rebuild.
2.2.1 Hot Swap Disk Cartridges
Hot Swapping allows disks to be removed and replaced without disrupting data access while the
ACS-8910 system is in use.
Automatic Hot Spare allows a disk to be removed and replaced without turning off the power .
This
is usually performed when there is no Hot Spare drive configured.
There is no need to power down
the system.
2.2.2 Automatic Global Hot Spare
Hot Spare allows for the automatic replacement of a faulty drive without requiring intervention.
When a disk fails, the ACS-8910 will automatically replace the faulty drive with the configured hot
spare disk. Also, there is no need to turn off the power while replacing the defective disk.
Global Spare Drive
Global Spare Drive does not serve any particular logical drive. When a single drive fails from any of
the logical drives, the Global Spare Drive will rebuild this particular logical drive atomatically.
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