Ta b l e 3 - 4 . R A I D 5 O v e r v i e w

Uses

RAID 5 provides high data throughput, especially for

 

large files. Use RAID 5 for transaction processing

 

applications because each drive can read and write

 

independently. If a drive fails, PERC 3 uses the parity

 

drive to recreate all missing information. Use also for

 

office automation and online customer service that

 

requires fault tolerance. Use for any application that

 

has high read request rates but low write request rates.

 

 

Strong Points

Provides data redundancy and good performance in

 

most environments

 

 

Weak Points

Disk drive performance will be reduced if a drive is

 

being rebuilt. Environments with few processes do not

 

perform as well because the RAID overhead is not

 

offset by the performance gains in handling

 

simultaneous processes.

 

 

Drives

3 to 32

 

 

RAID Levels

47

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Image 49
Dell 3 manual RAID 5 provides high data throughput, especially for, Large files. Use RAID 5 for transaction processing