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ISMF Difference between volume count and DVC

 
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upendrasri

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Joined: 28 Sep 2017
Posts: 49
Location: India

PostPosted: Tue Dec 05, 2017 12:40 pm    Post subject: ISMF Difference between volume count and DVC
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Hi All,

I would like to understand the deffence between Voume count and Dynamic volume count in ISMF Dataclass?

I have gone through DFSMSdfp Storage Administration mauals.

Volume count is the maximum number of volumes which dataset can expand.

Dyanamic volume count is the maximum number of volumes which can be added dynamically to a dataset.

Both Volume count + Dynamic Voulme count should not cross 59 volumes.

See the below example.

One of my old dataset : TTSS.Z120.TEST --> This is a VSAM Multivolume dataset.

From File Aid(And LISTC also shows same information) using Dataset Utility option we can see the below details.

Code:

DATA COMPONENT: 'TTSS.Z120.TEST.DATA'                   
  Volume Allocations:                                     
   1. A4N138  2. A4N204  3. A4N12A  4. A4N1B6  5. A4N121   
   6. A4N1FE  7. A4N115  8. A4N1CE  9. A4N1G3 10. A4N208   
  11. A4N167 12. *      13. *      14. *      15. *       
  16. *      17. *      18. *      19. *      20. *       
  21. *      22. *      23. *      24. *      25. *       
  26. *      27. *      28. *      29. *      30. *       
  31. *      32. *      33. *      34. *      35. *       
  36. *      37. ______ 38. ______ 39. ______ 40. ______   


Current dataset Used volumes : 11
Total Available volumes for this dataset : 36

From Listc of the above dataset

Code:

CLUSTER ------- TTSS.Z120.TEST                             
     IN-CAT --- USER.TEST.CATALOG                           
     HISTORY                                                   
       DATASET-OWNER-----(NULL)     CREATION--------2017.337   
       RELEASE----------------2     EXPIRATION------0000.000   
     SMSDATA                                                   
       STORAGECLASS ---STANDARD     MANAGEMENTCLASS--PRDINS1   
       DATACLASS ------EXTEND30     LBACKUP ---0000.000.0000   


From ISMF DATACLASSE EXTEND30 we can see the below details.

Code:


TEST1                           DATA CLASS LIST                               
Command ===>                                                  Scroll ===> HALF
                                                      Entries 1-1 of 1         
                                                      Data Columns 12-16 of 52
CDS Name : ACTIVE                                                             
                                                                               
Enter Line Operators below:                                                   
                                                                               
     LINE       DATACLAS SPACE      RETPD OR    VOLUME  ADDITIONAL  DYNVOL     
     OPERATOR   NAME     DIRECTORY  EXPDT       COUNT   VOLUME AMT  COUNT     
    ---(1)----  --(2)--- --(12)---  ---(13)---  -(14)-  ---(15)---  -(16)-     
                EXTEND30    ------  ----------       1  ---------       30     
    ----------  -------- ------  BOTTOM  OF  DATA  ------  --------  ----------



As per ISMF Maximum number of volumes available for this dataset is 1 + 30 ---> 31 ----> correct me if I am wrong?

But currently as per File Aid Maximum available number of volumes for this data set is 36

is it like after reaching Maximum 31 volumes , Manually 5 dynamic volumes added to this data set?
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expat

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Joined: 14 Mar 2007
Posts: 8619
Location: Back in jolly old England

PostPosted: Tue Dec 05, 2017 1:13 pm    Post subject:
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Excuse me, but what the hell has this question have to do with CLIST or REXX ???
Please learn to think about WHERE you post anything before you post it

Because I have to think about where I have to move it to
icon_evil.gif icon_evil.gif icon_evil.gif

How many volumes are defined to the storage group
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upendrasri

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Joined: 28 Sep 2017
Posts: 49
Location: India

PostPosted: Tue Dec 05, 2017 1:22 pm    Post subject:
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Hi Expat,

Sorry, One of my forum is open and I just thought of starting a new topic and posed from there... didn't observe that am in Rexx forum.

There are 110 volumes defined in Storage Group.

If you want am okay to open a new topic outside CLIST or Rexx forum.


Thanks.
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