On Sun, 3 Jan 2010 23:05:18 +0100, Lindy Mayfield wrote:

>what does he mean by "... a schedule time operation..."?  what does that mean?
>
In the Bad Old Days, the production administrators would provide to
operations a handwritten Run Sheet for each job, specifying resources
such as expected execution time, storage requirements, number of
tape drives, and volumes to be mounted on each.  The operators would
arrange these so that at no point were the available resources
overcommitted, the pass them on to the tape ape who would run up and
down the aisles pulling tapes and stacking them on a cart in the order
that jobs would need them.

JCL automated some of this.  TMS, JES3 Setup, and automated tape libraries
did more.

-- gil

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