On Thu, Nov 14, 2002 at 09:59:17PM +0200, Eran Tromer wrote:
> Ehud Karni wrote:
>
> > I can put 7 disks and an additional ventilator inside the computer box
> > (all I need is supporting frames).
>
> Disk drives draw a lot of power when they spin up (e.g., the Maxtor 80GB
> can reach 22W on the 12V line plus 2W on the 5V line). I doubt a
> standard power supply can handle 7 of these simultaneously, so make sure
> your IDE cards don't cause automatic spin-up. You may also need to tweak
> your Linux installation, because the kernel's probing of IDE disks may
> cause them to spin up with insufficient delays.
Many newer disks can be jumpered for 'delayed start', some even let
you choose between more then one delay (let's say, 3 disks with no
delay, 2 with 5 seconds, 2 with 10 seconds - I think most power
supplies will make that). Of course, expensive hardware RAID cards
have more options ...
Didi
>
> Eran
>
>
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