The storage technology RAID (Redundant Array of Independent Disks) has four main

Question

The storage technology RAID (Redundant Array of Independent Disks) has four main goals:

i. capacity ii. performance iii. reliability iv. availability

In the context of RAID, explain what each of these terms means.
There are a number of different RAID schemes. RAID 4 stripes data
at block level across the disks, with one disk dedicated to parity. In
other words, if there are n disks, file system blocks are stored on n-1 of the disks, with the remaining disk storing parity information for each
sequence of n -1 blocks.Discuss how each of the four goals above is
satisfied by RAID 4.

Explanation / Answer

Answer)

RAID System:

Raid is defined as the data storage visualization technology which is alligned with multiple disk drive components seggregated into one or more units for data redundancy, performance improvement or even both.

When capacity is considered: the data is scattered across the drives in may be one or many ways called as RAID levels.

Performance and reliability : Each RAID level has a different form or schema to balance and even provides protection against the unrecoverable sectors read errors and failure that might happen of the physical drive.

Availability: It combines with many such physical disk drives for performance improvements and redundancy.

Hope this answer helps. :) Happy to help.

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