5 Apr
2000
5 Apr
'00
4:31 a.m.
The only advantage I know of using 0+1 is that it allows you to combine disks of different sizes into equal size stripe sets which can then be mirrored.
Ah, I never considered this scenario. You'd have to do sometricky command queue and rate throttling if your stripe sits on two drives of wildly differing performance characteristics!
NTAP supports drives of differing sizes with in the same RAID group in RAID 4, although it has recently been suggested that this could hurt performance more than previously thought. It would be nice if they could release a white paper testing and quantifying this.
Bruce