With 6.5 sp5, sp6 I had raised the NSS work to do count from 50 to 100 which
sped up my backups (Arcserve 11 sp3).

On a new system I started with SP6 them upgraded to SP7. Would the system
under SP7 benefit or become unstable with a work to do count at 100 ?
The new system is an HP 370G5, 8 Gb ram, raid 5, SAS drives