That depends on a number of factors. I have experienced doing backup with a
SP/widenode for 100 servers filling a 150 gig
disk pool and then migrating to tape. It was close and needed upgrade, however,
it worked. The main portion of the process to suffer was the admistrative
function that are necessary each day.+

Other possibilities are to bring up an additional server thereby doubling your
backup window.

If it is just speed your concerned with the 100mb ethernet will be running at
about 2/3 of the ATM but with the appropriate
adjustments to your schedules etc. it should work quite well.

Gene Klaus