Reply to post: Re: Tape drive fun

Please do not scare the pigeons – they'll crash the network

John R. Macdonald

Re: Tape drive fun

A couple of similar war stories: Early 1970's the company decides they need a picture of the mainframe computer room for a company publication. Bring in professional photographer, run an all-tape sort job so as turn on all those pretty lights on the tape drives. Photographer takes his picture ... and the flash triggers a sensor somewhere causing an emergency shutdown of the whole mainframe.

A bank where I was a contractor in the 1970's started suffering an outage every, say Tuesday, morning, at 9:00 on a segment of their network. It took six months to find the root cause which was part of the cabling for that segment was buried next to a railway line. Every Tuesday morning an exceptionally heavy goods train would come rumbling down the line at 9:00 causing vibrations that knocked out that segment.

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