RAID - kylessukaichang/kylessukaichang.github.io GitHub Wiki
- RAID
- Just a Bunch Of Disks,JBOD
- RAID 0
- Performance
- RAID 1
- Redundant
- RAID 10(Redundant Array of Independent Disks Mode 10)
- Performance + Redundant
- RAID 2
- Most of what RAID 2 offers is now is available in modern hard disks as a standard like ECC, so there's no reason to use it.
- RAID 3
- Techopedia Explains RAID 3
- The disks must spin in sync
- so sequential read/write (R/W) operations achieve good performance.
- However, random R/W operations may take heavy hits in performance.
- The disks must spin in sync
- [RAID-3 on the cheap -- is it possible?][12]
- Replied from Rob B. (Independent) Independent Advisor
- Personally I think the Software and Hybrid are a waste of time and misleading when claims of reliability are usually made. In most cases an effective backup plan is better than these.
- All too often the RAID software and/or Hybrid model actually cause a failure. Or what is supposed to protect the system in drive crashes and failures ends up being the cause of them.
- Hardware RAID is by far the best.
- Replied from Rob B. (Independent) Independent Advisor
- Techopedia Explains RAID 3
- RAID 4
- like RAID 3, but block level, not bit level.
- RAID 5
- Performance + Redundant
- one parity computation
- to recover from one failed drives.
- RAID 6
- Performance + Redundant
- either two parity computations instead of one or it performs the same parity computation on overlapping subsets of the data.
- to recover from two failed drives.