In this post, we will discuss the space requirements of RAID 1 and RAID 5 architecture.
RAID-1 follows the concept of mirroring where data in one disk is also replicated on another disk.
This provides as an ideal fallback option as the entire data is available in another disk. Down time for any disk failure is minimal and so is data loss.
The only drawback is space. RAID-1 implementation would need double the space.
RAID-5 architecture stores the information about each row in a parity bit. So, out of say 4 disks, 1 disk is used up for parity bit. But, only 25% space is used as against RAID-1.
RAID-1 follows the concept of mirroring where data in one disk is also replicated on another disk.
This provides as an ideal fallback option as the entire data is available in another disk. Down time for any disk failure is minimal and so is data loss.
The only drawback is space. RAID-1 implementation would need double the space.
RAID-5 architecture stores the information about each row in a parity bit. So, out of say 4 disks, 1 disk is used up for parity bit. But, only 25% space is used as against RAID-1.
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