[rescue] Multipack Power Supply pin-out?

[Peter Stokes]

Hi Mike

The big tell tale on the original is that it had twice as many lights on the
front of the unit.

Peter

Sent from my iPad

On 23 Aug 2017, at 21:34, Mike Spooner <mike.spooner.ux at gmail.com> wrote:

>>> On 23/08/17 06:16 AM, Jonathan Katz wrote:
>>> All,
>>>
>>> I'm repurposing an old 1st gen Multipack as a case/setup for a cluster
>>> of Raspberry Pi systems. I'd like to reuse the Multipack's power
>>> supply to power the Pis & an ethernet switch I wish to mount inside.
>>> To do this I need the pinout of the power supply. Does anyone have
>>> this? Worst case I can break out a multimeter, but I figure someone
>>> may have this.
>>>
>>> This is the original Sun doc on the product, so there isn't much
>> confusion.
>>>
>>> https://docs.oracle.com/cd/E19957-01/805-1667-10/805-1667-10.pdf
>>
>> According to section 7.1 of that document, the power supply part number
>> is 300-1330.  Pinouts for that can be found on-line in the Field
>> Engineers Handbook:
>>
>> http://www.shrubbery.net/~heas/sun-feh-2_1/Devices/DC_
>> Power/DCPOWER_FDK_1330_185W.html
>>
>>
> Careful with the term "original" - the *original* Multipack is a 12-bay
> 12-disk Fast-Wide-SCSI unit
> (recognisable from the inside by the presence of 12 SCA connectors on the
> backplane),
> where as the Multipack-2 (ref the above-posted link to Sun doc) is a 6-bay
> 6-disk UltraSCSI unit.
>
> The confusion arises because they both use the same chassis and both have a
> pair of 68-pin SCSI connectors
> on the back. From the outside, they are often indistiguishable (some
> Multipack-2 cases had an "UltraSCSI" badge
> on the front, but many *didn't*). In fact, the Multipack-2 has all 12
> "spud-mounting-rails" internally, in spite of
> having only 6 SCA connectors on the backplane).
>
> There is a chance that both models use the same spec/pinout of PSU, but you
> should check the documents for
> the *original* 12-bay/12-disk Multipack to make sure. I suppose that even
> if the pinout voltages are the same, the
> load-rating on the separate rails may well be different.
>
> Take care out there!
>
> -- Mike Spooner
>
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