RAID

 REDENTENT ARAGEMENT OF 

FILE DATA

BASIC DISK PRIMERY EXTENTED 4

DYNAMIC VOLUMES UNLIMITTED

SIMPLE VOLUEM 

SPANND TWO HARD DISK 100 GB 100 GB TOTAL 200 GB

MIRRORRD

RAID TWO HARD DISK

DISK ONE FAIL NO DATA LOSS

50% UTILAZATION

RAID 5

3 HARD DISK