It depends.

In the old SLED days this could be performance crippling, especially if
there was a decent paging rate(remember only one actuator/volume). With
little or no paging this would not be a large problem.

Fast forward 20 years:

Data is mapped transparently to many many small drives, accessed by many
actuators. Again if there is no significant paging, no problem. If
significant paging occurs, this MAY BE a problem, maybe not.

Having said all of the above, my distinct preference would be for one
page ds the size of the 3 currently occupying the volume.

HTH,


<snip>
I noticed again today that we have 6 local page datasets on 2 volumes -
each a 3390-3.  I'm sure they have Pavs, or the equivelent on the dasd,
but I'm just wondering if that is a good practice or not. 
</snip>
 

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