From: "Frank Haber" 

The one time I tried NT4's software mirror was back in the SP2 period, and
I got all tangled up in a failed dual-proc conversion and gave up.  I
remember the buzz then was "much safer, but not twice as safe - there
can be mirror problems" and "quite a bit slower for RAID 1 than
single-drive."  This was in the first days of 10Base/100, and we were
struggling to give something like the response of a local drive under a bit
of load.   Does software mirroring
"feel" slower under 0 load (initial response time, file
open/close)?  Does it bog down faster?   Would you try it with IDE/ATA
under SP6?

--- BBBS/NT v4.01 Flag-5