I was wondering if anyone here could do a little test for me.

We have 2 environments.  We've noticed that on our z900-escon-EMC
DMX2000 DASD, dasdfmt of 10,000 cyl takes an awful long time - 25minutes
(doing about 99 i/o sec - perf numbers show high DISC time).

On our z990-ficon-HDS DASD, dasdfmt of 10,000 cyl takes less than 5
minutes and does about 570 i/o sec.  

I tried this when both system weren't doing much of anything else so no
other contention going on.

So my questions are - what kind of elapsed times do others see for escon
configurations?  Any one else using this EMC DMX2000 that could try?  

I know FICON makes a big diff, but that much??   I need to know if I
need to go to EMC and get them to tell me why it's so bad.  

Marcy Cortes
(415) 243-6343

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