ilug-admin at linux.ie wrote:
>> On Mon, 31 Jan 2000 10:33:23 -0000
> "Kenn Humborg" <kenn at bluetree.ie> wrote:
>> | 1. Is it safe to connect/disconnect a SCSI cable from
> | a powered-up device (either host adapter or disk/tape
> | drive)?
>> | 2. Is it safe to power up/down an external SCSI device
> | while the host adapter is powered?
>> Two words: kernel panic. Certainly in the past, I've seen gear get _profoundly_
> PO'd by SCSI devices appearing/disappearing.
The problem with unplugging SCSI drives from the bus is that you never know when
a command will be sent down the pipe, and there are so many possible variations
with caching and different sequences of commands that you can very easily shoot
yourself in the foot.
It's technically possible, and electrically safe, but it's not data-safe.
Vin
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