> quick summary:
>> the physical interface needs to be designed with hot-plug in
> mind. eg ground
> must mate first, demate last. DEC's BB (breeze block) and Compaq's
> proprietary drive housings are designed to be hot-swap, as are
> the industry
> standard SCA interfaces.
>> the (de)mating causes a lot of disturbance on the bus, even with proper
> hot-swap interfaces. in the worst case you could fry other devices on the
> bus.. in the more common case the (de)mating can damage/deteriorate the
> electrical interface contacts, through 'micro-arcs'..
>> etc.. etc.. it's a good read. (as are all the DEC tech journals).
Agreed. You don't happen to have a box of back issues lying
around? :-)
> basically: you really don't want to hot-swap normal scsi connections on a
> regular basis. If you do, isolate the device from the bus before removing
> the power.
Surely, you mean the opposite? Cut power first, then pull out the
connector.
Later,
Kenn
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