3.2RAID 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, MegaRAID SCSI 320-0 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.

Uses

RAID 0 provides high data throughput, especially for large

 

files. Suitable for 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 30

 

The MegaRAID SCSI 320-0 controller supports one or two

 

SCSI channels, with up to 15 SCSI devices on each

 

channel.

 

 

Figure 3.1 shows a RAID 0 array with four disk drives.

3-2RAID Levels

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