RAID 0

RAID 0 provides disk striping across all drives in the RAID subsystem. RAID 0 does not provide any data redundancy, but does offer the best performance of any RAID level. RAID 0 breaks up data into smaller blocks and then writes a block to each drive in the array. The size of each block is determined by the stripe size parameter, set during the creation of the RAID set. RAID 0 offers high bandwidth.

By breaking up a large file into smaller blocks, PERC 3 can use several drives to read or write the file faster. RAID 0 involves no parity calculations to complicate the write operation. This makes RAID 0 ideal for applications that require high bandwidth but do not require fault tolerance. RAID 0 is also used to denote an “independent” or single drive.

Table 3-2 provides an overview of RAID 0.

Ta b l e 3 - 2 . R A I D 0 O v e r v i e w

Uses

RAID 0 provides high data throughput, especially for

 

large files. Any environment that does not require

 

fault tolerance.

 

 

Strong Points

Provides increased data throughput for large files. No

 

capacity loss penalty for parity.

 

 

Weak Points

Does not provide fault tolerance. All data lost if any

 

drive fails.

 

 

Drives

1 to 32

 

 

RAID Levels

43

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Dell 3 manual RAID 0 provides high data throughput, especially for, Large files. Any environment that does not require