View Full Version : scsi on/off switch
09-01-01, 10:09 PM
I have an idea for people that have scsi hard drives but don't have them in use all the time. I have a scsi HDD as my second drive and it always spins creating heat and noise, when I leave my computer on to fold protiens:) or when I just won't use the drive I unplug the drive to stop the noise and heat. I want to install a switch that turns the drive on and off. I was thinking of putting the switch on the ground wire. I hope that would work, it would be one of first mods that I thought of myself.
09-04-01, 04:31 PM
Sounds like a great idea. Tried to find some information on how to wire a power switch into a hard drive but I didn't have any luck. I'll give yer post a little BUMP..and maybe one of the electrical experts on the boards can tell you the best method to wire it up! Good luck!
09-04-01, 04:59 PM
Maybe a DPDT switch would work. Something that would cut power to the +5 and +12 lines going into the HD at the same time.
sounds interesting i would like to see the answer to this one too!!
09-04-01, 06:01 PM
I think I'll try to find a switch that can connect 2 different circuits at once. If I can't find one, how hard can it be to make. I am gonna have to cut of both 5v and 12v at the same time. I was checking out www.sciplus.com but couldn't find anything, but I did see some cool stuff for projects.
There's a thing that keeps an open circuit except at high temps. If I could find one that switchs on at around 45-50C I would hook it up to my CPU and some leds or a buzzer in case of a CPU fan dieing or somthing. Just a saftey feature.
I think that you can, with some BIOSES set the HDDs to spin down after a while.
In linux you can type:
hdparm /dev/sda -Y
for the first SCSI HDD.
Could you not just add a sitch between all power leads ie.
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