Re: Factors to take into account when deciding whether to create a new prod

[ca.portal.admin]

Many years ago we started with 250 users being a ""big day"" - we now regularly hit 750 users and put through a million tasks a day (between
3:00am and 6:00pm). We have 7,000+ registered users - so clearly the old 10% rule works pretty well, more likely because in our case our user
community is spread across 3 shifts. We do not think that we are anywhere near capacity of a single region to support our requirements.
We use a single DB/DC architecture (no CICS). In addition to 700-750 VTAM users we have up to 100 mid-range (Java) users on at the same time.
IDMS has scaled very well for us. Only thing to remember is to keep resources increasing with increasing numbers of users: storage pools,
Scratch, RCE's and RLE's. We have broken up our storage pools so that we get High Performance Storage Protect Option to kick in, and to minimise
SOS's - see following display - HTH - cheers - Gary

*******************************************************************************
Tape CV Num Julian Date+Time
*
G0GJ7M 20 2009065 09:41
*
*******************************************************************************
Pool Pages In Use HWM Times SOS Cushion SSUUTDS *
HKSKRBY *
0 1000 88 92 0 250 X *
8% 9% 25% *
1 250 10 30 0 25 XX *
4% 12% 10% *
2 250 5 5 0 25 XX *
2% 2% 10% *
3 250 0 2 0 25 XX *
0% 0% 10% *
128 10000 5078 5416 0 0 XX *
50% 54% 0% *
129 1000 146 147 0 0 XX *
14% 14% 0% *
130 3750 1596 1770 0 0 XX *
42% 47% 0% *
255 10000 5518 5569 0 0 X *
55% 55% 0% *
*******************************************************************************
Scratch-> Lo Page HI Page Alloc HWM
*
50001 68000 10786 11152
*
Percentages ------------> 59% 61%
*
*******************************************************************************
Users-> Max Current HWM
*
760 583 588
*
*******************************************************************************
V20 Release 16.0 SP7 >>> JIS Production CV <<< Enter next task:

Gary Cherlet
Justice Technology Services
Department of Justice, SA Government
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