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G P Naidu

Hi,

space = (trk,(100,10),rlse) parameter how many tracks will be allocate in os/390 system and how?.
example like this 100+10*x.(i want x value in os/390)
Embarassed

By,
naidu.

ofer71 · Posted: Wed Jan 21, 2004 6:01 am Post subject:

x=15
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Rambler Marlin specifications

kolusu · Posted: Wed Jan 21, 2004 6:28 am Post subject:

Gp naidu,

Check this link for 3390 Device Characterstics

http://publib.boulder.ibm.com/cgi-bin/bookmgr/BOOKS/AM3IN001/1.3.1?SHELF=&DT=19930630180255&CASE=

check this link for comparision between 3380 & 3390 device types

http://publib.boulder.ibm.com/cgi-bin/bookmgr/BOOKS/AM3IN001/1.4?DT=19930630180255

Hope this helps...

Cheers

Kolusu
_________________
Kolusu
www.linkedin.com/in/kolusu

G P Naidu · Posted: Wed Jan 21, 2004 6:49 am Post subject:

Hi,

Thanx ur kind help.

i have given the parameters for this:

//XICSFILE DD DSN=a950.aaa.XXXX.EFT.XICS(+1),
DISP=(NEW,CATLG,DELETE),SPACE=(TRK,(100,20),RLSE),
UNIT=SYSDA,
RECFM=FB,LRECL=2024,BLKSIZE=20240

it occupied 1758 trcks find below, i am quit confuse this allocation.actually 15 * 20+100 =400 only but it allocate 1758 how?

Device type . . . . : 3390
Organization . . . : PS
Record format . . . : FB
Record length . . . : 2024
Block size . . . . : 20240
1st extent tracks . : 1758
Secondary tracks . : 20
Data set name type :

Thanks,
Naidu. Embarassed

Mike Chantrey · Posted: Wed Jan 21, 2004 7:07 am Post subject:

One possibility is that some part of the SMS ACS routines is overiding your space specification, although this seems a bit of an odd thing to do. You could ask your data storage admin people if they have anything like this (if you are not familiar with ACS routines basically they are site-specific routines which get invoked if your site has SMS active, and they can reject or alter aspects of attempted dataset allocation).

Mike · Posted: Wed Jan 21, 2004 5:07 pm Post subject:

Mike, at our site I beleive that the ACS routines do not now allow allocation in tracks, at least a cylinder must be allocated, this is done, as I understand it, to reduce fragmentation and the overheads involved in the management of fragmentation.
_________________
Regards,
Mike.