|
RAID 0 |
RAID 1 |
Description |
Data Striping |
Data Mirroring |
Drives |
2 or more |
2 identical drives |
Storage Capacity |
Sum of all drive capacity |
1 drive capacity |
Data redundancy (backup) |
None |
Available |
Data transfer write rate |
Increased |
Not improved |
Data transfer read rate |
Not Improved |
Increased |
Major advantage |
Allows operating system to see 1 large capacity drive |
Provides ongoing protection in case of hard drive failure |
Major disadvantage |
If one drive fails, data on all drives in RAID array is lost |
Cost of hard drive storage is doubled w/o increase is space |
source: searchwarp