Biostar A55MD2 Owner's Manual download pdf (Page 29)

A55MD2 / A55MG2 / A55ML2

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

 Drives: Minimum 2, and maximum is 2.

 Uses: RAID 1 is ideal for small databases or any other application that

requires fault tolerance and minimal capacity.

 Benefits: Provides 100% data redundancy. Should one drive fail, the

controller switches to the other drive.

 Drawbacks: Requires 2 drives for the storage space of one drive.

Performance is impaired during drive rebuilds.

 Fault Tolerance: Yes.

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Biostar A55MD2 Owner's Manual Page 29