On Thu, 4 Mar 2004, Chuck Swiger wrote:
Also, RAID-5 performance degrades horribly if a drive is down, whereas RAID-1
does fine...
Using the algorithm you indicate below, RAID-5 performance would not
degrade on the loss of a drive, it's start out that badly.
A five-disk RAID-5 array has to
Danny Pansters wrote:
So statistically and theoreticaly RAID1 compares to no RAID at all as 2x read
speed, 1x write speed (it needs to be written twice but through two heads on
two drives seperately and assume they react and move at the same speed).
That's about right, but you should be aware of
On Wednesday 03 March 2004 23:20, Reko Turja wrote:
RAID-1 will be about 50% faster than RAID-5 doing reads regardless of
size, and will also be *much* faster doing small writes-- by a factor
of 4, perhaps.
The abovementioned figures seem more like comparing RAID-0 (striping)
to RAID-5
