RAID — Explained in 5 mins
3 min readSep 16, 2023
What is RAID and its types ?
RAID is used to store same data across multiple hard disks to avoid the data loss and also to improve performance.
Mostly commonly used types are,
- RAID 0
- RAID 1
- RAID 5
- RAID 6
- RAID 10
Things to remember:
RAID 0:
- RAID 0 is ‘stripping’.
- Minimum 2 disks.
- There is no data redundancy.
- If the data is not important than the speed then we can use ‘RAID 0’
- Example: We can use RAID 0 for SWAP Partition.
RAID 1:
- RAID 1 is Mirroring.
- Minimum 2 disks.
- RAID 1 is exact copy of another disk.
- It has data redundancy
- But write speed is low when compared to ‘RAID 0’
RAID 5:
- RAID 5 is the combination of ‘Data Stripping’ and ‘Parity bit’
- Minimum 3 disks.
- It has data redundancy.
- If 1 hard disk failed then we can recover the data by…