On Sun, Jun 18, 2006 at 03:45:36PM +0200, Rune Saetre wrote: > Hi > > >Arno Wagner: > >>If you can test it with reasonable effort and cost (e.g. put some of > >>them on another PSU), you might want to do that. > > > >Is that safe? > > Don't know how safe it is to use different PSU's, but I have done it with > success several times on old hardware used for testing. I can't think of > any reason you should run into trouble if ground is common, and the disks > are powered up first. It is pretty safe, as long as you plug both PSUs into the same outlet and the outlet its grounded. Also powering up may be a bit difficult, since the power-up signal comes from the mainboard today. Better solution: Get a PSU with more power reserves and try with that. >From the time you have alreasy sunk into this problem, I gather paying for a, say, 500W PSU would not be too bad. > >Another way could be to use a meter to gauge how much power it drains. > > You better use an oscilloscope if anything, as you are looking for very > short transients. I have heard (but never tested) that the disks pull > large currents when moving the heads, but with seek times of some > milliseconds you wouldn't even see it on a regular amperemeter. Nor a regular oscilloscope. Would need to be the storage kind. Expensive, unless you can borrow it. Arno -- Arno Wagner, Dipl. Inform., CISSP --- CSG, ETH Zurich, wagner@xxxxxxxxxxxxxx GnuPG: ID: 1E25338F FP: 0C30 5782 9D93 F785 E79C 0296 797F 6B50 1E25 338F ---- Cuddly UI's are the manifestation of wishful thinking. -- Dylan Evans Windows is the "under-3" toy of the OS world. -- Matthew D. Fuller -- dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
