Additional psu for additional hard drives...

[Guest]

Archived from groups: alt.comp.hardware.pc-homebuilt (More info?)

I intend to build a server case and have an additional psu inserted to power
additional hard drives...

My question:
Is this possible to do this without the need of a motherboard to 'control'
the hard drives?
If so what connections are needed to have an external switch to power the
drives on and off?
Can I fool the psu in to thinking that a motherboard is running it?

Regards

Reply to: quiksilva AT dsl.pipex.com
Or to the group.

 

[Philo]

Archived from groups: alt.comp.hardware.pc-homebuilt (More info?)

"(0v0)" <quiksilva AT dsl.pipex.com> wrote in message
news:42a2ef18$0$37156$bb4e3ad8@newscene.com...
> I intend to build a server case and have an additional psu inserted to
power
> additional hard drives...
>
> My question:
> Is this possible to do this without the need of a motherboard to 'control'
> the hard drives?
> If so what connections are needed to have an external switch to power the
> drives on and off?
> Can I fool the psu in to thinking that a motherboard is running it?
>


all one need do is ground the green wire
to get the PS to turn on...
so just get a double pole switch and turn both supplies on at once...
or else turn the 2nd supply on first.

btw: you may want to use just a single supply of sufficient power
to handle all the drives...I think the power consumption of a single drive
is fairly small...maybe 15 watts or so...
but some SCSI drives can take quite a bit more on initial startup

 

[Guest]

Archived from groups: alt.comp.hardware.pc-homebuilt (More info?)

In article <42a2ef18$0$37156$bb4e3ad8@newscene.com>, says...
> I intend to build a server case and have an additional psu inserted to power
> additional hard drives...
>
Why not just get a couple of 300GBs?

> My question:
> Is this possible to do this without the need of a motherboard to 'control'
> the hard drives?

Yeah but then what's the point in having the drives?

> If so what connections are needed to have an external switch to power the
> drives on and off?

Toggle?

> Can I fool the psu in to thinking that a motherboard is running it?
>
Yup. Either use an old AT PSU or there's a couple of pins to jump.

--
Conor


"Be incomprehensible. If they can't understand, they can't disagree"