Hi, Gordon Henderson wrote:
> I've actually had very good results hot swapping SCSI drives on a live
> linux system though. I guess you do run the risk of something crowbarring
> the SCSI bus for a few cycles when the drive is unplugged or plugged in,
> but it's all parity/checksummed, isn't it?
You run the very real risks of unbalancing the bus when you plug/unplug,
thereby creating power spikes which may or may not destry your hardware.
I did what you do for years. Always when the bus was idle, and with
antistatic precautions. One day, all SCSI driver chips on the bus were
shot afterwards. That was the last time I *ever* touched a powered SCSI
bus.
(I had to replace the SCSI interface chip in my tape drive (fiddly work
with the soldering iron); luckily it used a standard one that was
available.)
--
Matthias Urlichs | {M:U} IT Design @ m-u-it.de | smurf@xxxxxxxxxxxxxx
Disclaimer: The quote was selected randomly. Really. | http://smurf.noris.de
- -
Reality continues to ruin my life.
-- Calvin
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