When should the 250W original power supply be upgraded?  I'm nearly ready to 
move an S900 motherboard to a new ATX case with more fans and perhaps another 
80gig IDE disk drive.  Currently I have these powered by the original power 
supply:

orig CD drive
orig floppy drive
orig 2gig SCSI drive
orig case fan
30gig IDE drive
60gig IDE drive
80gig IDE drive
CDRW

2 video cards  (TT & URez)
Sonnett ATA card
G3 400MHz card
   (might replace with G4)

The additional 80Gig IDE may go into a striped RAID with one of the current 
80gig disks.  This system is used for holding a large satellite image 
database, generating image mosaics and keeping a backup of everything online 
(the mosaics are up to 1.2 gigs).  Is failure of a disk to spin up a warning 
sign of not enough power?  This happened twice soon after adding the 80gig HD 
and I immediately put the system on an UPS (the HD was OK).  I know, it 
should have already been on one.  Since there is not a higher rated UMAX PS 
available, I know I'll have to make an adapter for using an ATX PS 
(<http://www.io.com/~trag/Umax_ATX_PS.sea.bin> thanks Jeff W.) or perhaps use 
two power supplies with fans & HDs separate from the motherboard (see 
<http://www.mikesmayhem.com/clc/s900.htm>).  I'll report back as this 
progresses.

Thanks in advance,
Bruce

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