Biostar TA880GXE Setup Manual page 23

RAID 1:
Every read and write is actually carried out in parallel across 2 disk drives in a RAID 1
array system. The mirrored (backup) copy of the data can reside on the same disk or on a
second redundant drive in the array. RAID 1 provides a hot-standby copy of data if the
active volume or drive is corrupted or becomes unavailable because of a hardware failure.
RAID techniques can be applied for high-availability solutions, or as a form of automatic
backup that eliminates tedious manual backups to more expensive and less reliable
media.
Features and Benefits
Minimum 2, and maximum is 2.
Drives:
­
RAID 1 is ideal for small databases or any other application that
Uses:
­
requires fault tolerance and minimal capacity.
Benefits: Provides 100% data redundancy. Should one drive fail, the
­
controller switches to the other drive.
Requires 2 drives for the storage space of one drive.
Drawbacks:
­
Performance is impaired during drive rebuilds.
Yes.
Fault Tolerance:
­
Block 1
Block 2
Block 3
TA890GXE / TA880GXE
Block 1
Block 2
Block 3
21