A company I fondly worked for published technical journals which included
an article on this subject, http://www.digital.com/DTJR01/DTJR01HM.HTM. :-)
Those who still have their collection can refer to "Digital Technical
Journal", Vol 9 No 3, 1997.
Bill
On Mon, 14 Aug 2000, Dan Jones wrote:
> There is electrical and then there is electrical. In theory, it is a
> bad idea to remove or add a SCSI device while a transfer is taking
> place. Why? Basically, the capacitive load on the SCSI bus changes
> when drive contacts are made or broken i.e. the transmission line
> characteristics of the bus change and that affects the signal in
> flight. Since transfers during the data phase are only protected by
> parity, undetectable errors might occur.
>
> Having said that, empirical evidence points to this type of failure
> being exceedingly rare for older versions of SCSI with restricted
> configurations and qualified components. Personally, I take
> the approach that something I can't prove won't happen...can happen
> and most likely will.
>
> Some people take the opposite view and they are mostly happy most of
> the time. :)
>
> [ ... ]
--------------------------------------
William Collins
Department 04618, Scientific Computing
880/D10E1, (505)844-9414
[EMAIL PROTECTED]
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