What do you want to accomplish?
RAID Level-0
- Stripes the data across all the drives in the array.
- Offers substantial speed enhancement, but provides for no data redundancy.
- Provides the largest capacity of the RAID levels offered, because no room is taken up
for redundant data or data-parity storage.
- Risk is higher since you'd have 2 disk drives, your chance of a hardware failure is double.
You might choose this level if you back up your data frequently or you can re-create the data
easily. You might also choose this level when you need maximum capacity
RAID Level-1
- Provides 100% data redundancy and requires two hard disk drives.
- The first half of a stripe is the original data; the second half of a stripe is a mirror
(copy) of the data, but written to another drive.
- Because the data is mirrored, the capacity of the logical drive is 50% of the physical
capacity of the two hard disk drives in the array.
RAID Level-0+1 (AKA Enhanced RAID Level-1, RAID 10 and RAID 6)
- Combines mirroring with data striping.
- This RAID level stripes data and copies of the data across all the drives in the array.
- As with the standard RAID level-1, the data is mirrored, and the capacity of the logical
drive is 50% of the physical capacity of the grouping of hard disk drives in the array.
- Requires a minimum of three drives.
If you have 2 different sized disk drives the capacity will be double what the smaller drive is.
Example: 1-10GB and 1-15GB drive = 1=20GB logical drive (5GB would be unusable).
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