Total storge size of space parameter

kiran_pagadala · New User Joined: 05 Jul 2005 Posts: 1 Location: India

Hi ,
am new to the form, gr8 site !!

have one question

if the space parameter is given like space=(cyl,(5,10),rlse) for a dataset in jcl.
As for as I know max allocated cyl will be 5 + (15*10) = 155 cyl.
Can this be exceeded becoz of some reason ?

parul chhabra · New User Joined: 27 Jun 2005 Posts: 2

hi kiran_pagadala

it is not possible to exceed the space.

vini_srcna · Posted: Fri Jul 08, 2005 6:04 pm

hi kiran,

once the dataset is allocated the space parameters cant be changed.
the only way to enhance the space is by deleting the DS and reallocating the dataset with the required space.

corrections are welcome,
regards
VINI

" SMILE NOTHING U HAVE TO PAY FOR THAT"

mmwife · Super Moderator Joined: 30 May 2003 Posts: 1592

Hi Kiran,

Welcome to the site.

This is probably not what you were looking for, but non the less it's interesting and may provide a solution for you in the future.

You could have increased that allocation from 155 CYL to 795 by doing the following:

space=(cyl,(5,10),rlse),unit=(5,sysda)

Your use equation now looks like this:

5 + (15*10) + (16*10*4) = 795 cyl.

That's because you get 16 2ndary extents on EVERY vol you allocated.

HTH

Rupesh.Kothari · Member of the Month Joined: 27 Apr 2005 Posts: 463

Hi MM

when i m trying code i m getting following error

"5" IS ILLEGAL OPERAND FOR "UNITNAME" PARAMETER OF "UNIT"

Could you please explain me?

Thanks in advance

Rupesh.Kothari

shanthikiran · New User Joined: 31 May 2005 Posts: 7 Location: India

Hi kiran

Unit contains only a single parameter.so u need to delete the dataset n create another dataset with same name with sufficienct space.

Regards

Shanthi

richie · New User Joined: 11 Jun 2005 Posts: 24

Could someone please explain how did
space=(cyl,(5,10),rlse),unit=(5,sysda) gives 5 + (15*10) + (16*10*4) = 795 cyl come?Whee do we get the Multiplicato factor 10 and 4 from??

prasad_yadav20 · New User Joined: 12 Mar 2005 Posts: 13 Location: hyderabad

[deleted totally unrelated question that should go in a new topic]

therasith · New User Joined: 02 Jan 2004 Posts: 52 Location: chennai

Hai mmwife

priya · Posted: Sat Feb 16, 2008 3:12 am

mmwife · Super Moderator Joined: 30 May 2003 Posts: 1592

Hi Priya,

NOW you tell me.

Only kidding. Actually it's good to correct errors, even if it's some time after the fact. Someone may have a need for info at a later date, and it's important for them to get the correct info.

Aaru · Posted: Sun Feb 17, 2008 4:33 am

vini,

expat · Posted: Sun Feb 17, 2008 4:52 pm

Just a few little words from me

Each allocation, either primary or secondary, can be satisfied by up to five physical extents so if you have a really badly fragmented disk pool, it is possible that you will only ever be able to satisfy the primary and only two secondary allocations before you get an abend. Although it is a long long time since I have come across a pool like that, but they do exist !!

mmwife · Super Moderator Joined: 30 May 2003 Posts: 1592

Hi expat,

If I recall correctly, you can use up to 5 extents to satisfy a primary alloc and up to 3 extents for each 2ndary.

expat · Posted: Mon Feb 18, 2008 4:22 pm

Hi Jack,

I can not recall the SMS level, z/OS 1.3 (I think), when it became 5 extents for either primary or secondary allocations.

mmwife · Super Moderator Joined: 30 May 2003 Posts: 1592

Hi expat,

Ya can't turn your back for a minute (or was it a year?). Thanx for the update.