Biostar Hi-Fi A88W 3D Ver. 5.x User Manual download pdf (Page 38)

Motherboard Manual

6.5 RAID FUNCTIONS

RAID Definitions

RAID 0:

In a RAID 0 system data are split up in blocks that get

written across all the drives in the array. By using multiple

disks (at least 2) at the same time, this offers superior I/O

performance. This performance can be enhanced further

by using multiple controllers, ideally one controller per

disk.

Features and Benefits

 Drives: Minimum 2, and maximum is up to 6 or 8. Depending on the platform.

 Uses: Intended for non-critical data requiring high data throughput, or any

environment that does not require fault tolerance.

 Benefits: provides increased data throughput, especially for large files. No capacity

loss penalty for parity.

 Drawbacks: Does not deliver any fault tolerance. If any drive in the array fails, all data

is lost.

 Fault Tolerance: No.

 Total Capacity: (Minimal. HDD Capacity) x (Connected HDDs Amount)

RAID 1:

Data are stored twice by writing them to both the data

disk (or set of data disks) and a mirror disk (or set of

disks). If a disk fails, the controller uses either the data

drive or the mirror drive for data recovery and continues

operation. You need at least 2 disks for a RAID 1 array.

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: Ye s..

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Biostar Hi-Fi A88W 3D Ver. 5.x User Manual Page 38