RAID - Allows for atomic writes of 512 bytes and reads of up to 4KB
level 0 - raid spread the data blocks across the disk in a
round robin fashion. [Very Performant due to parallel reads]
[Very unreliable due to data loss - No redundancy support]
** best Performance but no reliability
Level-1 RAID make one copy for each block stored in the system, and
the copy is located on a different disk.
** Best random performance with reliability but worst capacity
Level 4 - sufferes from small-write performance flaw where parity flag is located
on same disk.
** Best capacity and reliability but small write problem
Level 5 - addresses the small write flaw and has replaced raid level 4.
best level 4 less the puns.