Re: (OT) Storage (8*IDE HDs) any experiences? - diodes

hi ya > I think if you use a diode to connect the outputs you are limiting > the current flow in one way only. And why would you want to do this? the diodes need to be power diodes... vs signal diodes given you cannot tie the power supplies at two diff voltages together... you have to isolate

Re: (OT) Storage (8*IDE HDs) any experiences? +55v

hi yes gnd should be connected... if +5v, +3.3v is NOT connected together... and assuming you have 2 powersupplies.. and if the power supply to the disk dies... than you're out of luck or if the powersupply tot eh motherboard dies... you'd be out of luck too in which case.

Re: (OT) Storage (8*IDE HDs) any experiences?

hi ya... might be easier/cheaper to use a simple RC delay to deliver power to the IDE disks before the motherboard actually gets the "power up" - remember that the atx powersupply has a "power-ok" signal to tell the motherboard go ahead and power up... ( aka the powe

Re: Storage (8*IDE HDs) any experiences?

gets it spower... ( need special circuitry to drive the disks ( minimally, 2 diodes for each of the power supply fun stuff alvin http://www.Linux-1U.net ... On Thu, 26 Apr 2001, Dimitri Maziuk wrote: > On Thu, Apr 26, 2001 at 03:23:03PM -0700, Alvin Oga wrote: > ... > > your optio

Re: Storage (8*IDE HDs) any experiences?

hi ya... good that these huge systems exists... att is working on a 12disk ide system... your options for 6 or 8 disks are the promise cards and/or 3ware ... has anybody measured the +12V current needed when all 8 drives start up...at the same time... hummm we have a 1u chassis ( C2300 )