CA IDMS IUA EIUA

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

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

    Posted 03-05-2009 07:19 PM
    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
    Telephone +61 (0)8 8226 5199
    Facsimile +61 (0)8 8226 5311
    Mobile +61 (0)41 333 1613
    MailTo:cherlet.gary@saugov.sa.gov.au