Ok.. short comparison, using a single disk as baseline.
Good chart, perhaps you should also mention the capacity. With this I mean what happens.
1 disk = 1TB for simplicity.
using 2 disks raid0: (striping) ++ double read throughput, ++ double write throughput, -- half the reliability (read: only use with good backup!)
Capacity: 2TB
raid1: (mirroring) ++ double read throughput. o same write throughput ++ double the reliability
Capacity: 1TB
using 3 disks: raid0: striping +++ tripple read performance +++ tripple write performance --- third of reliability
Capacity: 3TB
raid1: mirroring +++ tripple read performance o same write throughput +++ tripple reliability
Capacity: 1TB
raid5: (distributed parity) +++ tripple read performance
- lower write performance (not due to the second write but due to the necessary reads)
- sustains failure of any one drive in the set
Capacity: 2TB
using 4 disks: raid1+0: ++++ four times the read performance ++ double write performance ++ double reliability
Capacity: 2TB
Raid5:
+++ four times the read performance
- lower write performance (not due to the second write but due to the necessary reads)
- sustains failure of any one drive in the set
Capacity: 3TB