What are the significant characteristics of specific RAID Le

What are the significant characteristics of specific RAID Levels? Ie., redundancy, error

correction

This is specifically for Computer forensics. Thanks for your help!

Solution

RAID: Redundant Array of Independent Disks.It is to provide gaint levels of security from data reduction which happen from any down duration generated by malfunctions contrasted to security provided with conventional disk drives.it consists of conventional discs can work for hundreds or thousands of years without losing data due to the disk disaster.moreover RAID is able to increase input/output implementation,to be simple and quick.

Generally there are 6 levels.

Level 1

Level 2

Level 3

Level 4

Level 5

Every level provides contrastive procedure of allocating data over group of disks.hence the collapse of one disk is not possible .

In level 1 the mirroring method is used to attain the data redundancy.mirroring clutches the data on disk and replicates on to other disk and provides good viable and also a little improvement is also seen in I/o throughput.it is corelatively incapable in order to utilize the whole capacityof disk.

In level 3 and level 5 integrates the the stripping method along with parity codes,permits recuperation of data suppose if any collapse of disk occurs. In level 3 all the disks the data is transmitted parallely so that it reduces the transfer duration .

level 5 can manage the number of requests at a time.level 3 and level 5 will use the total disk caopacity much effectivelt than the level1.

level 2 :every hard dsk will apply the internal correction.it is hardly used.it unable to manage the more requests at a time

level 4 :it offers better perfomance of unsystematic reads