Biostar MCP6P M2+ Версия 6.x [21/47] Chapter 4 raid functions

MCP6P M2+

CHAPTER 4: RAID FUNCTIONS

4.1 O

PERATION SYSTEM

Supports Windows XP and Windows Vista.

4.2 RAID ARRAYS

RAID supports the following types of RAID arrays:

RAID 0: RAID 0 defines a disk striping scheme that improves disk read and write times for

many applications.

RAID 1: RAID 1 defines techniques for mirroring data.

RAID 0+1: RAID 0+1 combines the techniques used in RAID 0 and RAID 1.

RAID 5: RAID 5 provides fault tolerance and better utilization of disk capacity.

4.3 HOW RAID WORKS

RAID 0:

The controller “stripes” data across multiple drives in a RAID 0 array system. It breaks

up a large f ile into smaller blocks and performs disk reads and writes across multip le

drives in parallel. The size of each block is determined by the stripe size parameter,

which you set during the creation of the RAID set based on the system environment. This

technique reduces overall disk access time and offers high bandwidth.

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.

Block 1

Block 3

Block 5

Block 2

Block 4

Block 6