## SPACE calculation - Help

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rangab
Active Member
Posts: 56
Joined: Fri Mar 17, 2006 3:21 pm

### SPACE calculation - Help

Hi,

We need to add a new file to a JCL with a LRECL of 29990 and RECFM is FB. It will receive a minimum of 2500 records and a maximum of 8700 records. Would somebody help me to calculate the SPACE for this?

Thanks.
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Chanti
Member
Posts: 32
Joined: Thu Nov 27, 2008 4:31 pm
Hi,

It would require, if you consider max of 8700 records for the lrecl
29990
SPACE=(CYL,(310,310),RLSE)
According to:
(prim,sec)=((lrecl*maxrec)/56664)/15

Thanks,
Chanti.

Gerry Ciccheti
Member
Posts: 16
Joined: Thu Jul 30, 2009 7:52 am
Hi,

assuming it's a 3390 device, with an LRECL of 29990, you can only fit 1 record per track.

8700 records will need 8700 tracks

8700/15 equals 580 cyls.

Gerry

Gousiya Mulla
Member
Posts: 5
Joined: Thu Aug 27, 2009 2:09 pm
Location: Bangalore
Hi ,

According to:
(prim,sec)=((lrecl*maxrec)/56664)/15

What is 56664 in the above ?
Cheers ...

Chanti
Member
Posts: 32
Joined: Thu Nov 27, 2008 4:31 pm
Hi,

(prim,sec)=((lrecl*maxrec)/56664)/15

=> LRECL*MAXREC --> No. Of bytes
=> 56664 --> No. of bytes per Track
=> 15 --> No. of tracks per cylinder

Thanks,
Chanti.

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