Pct util 0.0 Volume status Full

[Valeed]

Hi ,

I am a newbie to TSM and trying to utilise and understand the administration part of it.

Appreciate if you can advice how a tape is marked full when the ptc util is showing 0.0

below is the output of : q vol


Volume Name Storage Device Estimated Pct Volume
Pool Name Class Name Capacity Util Status
------------------------ ----------- ---------- --------- ----- --------
815ADDL6 ORACLE_TAPE LTOCLASS 5.7 T 0.0 Filling
816ADDL6 ORACLE_TAPE LTOCLASS 5.7 T 1.3 Filling
818ADDL6 WIN_TAPE LTOCLASS 5.7 T 0.1 Filling
819ADDL6 ORACLE_TAPE LTOCLASS 7.2 T 91.6 Full
830ADDL6 UNIX_TAPE LTOCLASS 5.7 T 2.4 Filling
832ADDL6 WIN_TAPE LTOCLASS 5.7 T 0.1 Filling
ASC001L6 ORACLE_TAPE LTOCLASS 4.4 T 51.0 Full
ASC002L6 ORACLE_TAPE LTOCLASS 4.5 T 0.0 Full
ASC004L6 ORACLE_TAPE LTOCLASS 5.7 T 17.6 Filling
ASC005L6 ORACLE_TAPE LTOCLASS 4.7 T 59.2 Full
ASC007L6 ORACLE_TAPE LTOCLASS 4.4 T 10.5 Full
ASC008L6 ORACLE_TAPE LTOCLASS 4.3 T 45.5 Full
ASC009L6 ORACLE_TAPE LTOCLASS 4.8 T 35.5 Full
ASC011L6 ORACLE_TAPE LTOCLASS 4.4 T 46.9 Full
ASC012L6 UNIX_TAPE LTOCLASS 5.7 T 3.9 Filling
ASC015L6 ORACLE_TAPE LTOCLASS 4.4 T 0.0 Full

as you can see from the above output that there are 2 tapes whose Pct util is 0.0 but still the volume status is Full , please advice what is the issue.

 

[marclant]

What's the PCT Reclaim for those 2 volumes?

 

[Valeed]

What's the PCT Reclaim for those 2 volumes?

Thanks for your reply, appreciate if you can advice how to find the PCT reclaim, any command guidance will be very helpful.

 

[LED888]

Query Volume volume_nam F=D

Marclant have some useful links that you should review and may want to book mark them for future reference.

Goold Luck,
Sias

 

[DazRaz]

The tape is marked as full as while backups were being written to it, the end of the tape was reached. As the data ages and expires, the % Util reduces. Once all the data has expired or been moved, the tape will return to scratch.

You may want to run reclaimation against this pool. May not be necessary if the logs and database for your Oracle backups have similar retentions.

 

[Valeed]

Thanks LED888 and DazRaz for your valuable inputs.

I have checked both the tapes and found that both tapes value in Pct. Reclaimable space is shown as 100.0, find below the output. kindly advice

tsm: ASC-TSM>q volume ASC002L6 f=d

Volume Name: ASC002L6
Storage Pool Name: ORACLE_TAPE
Device Class Name: LTOCLASS
Estimated Capacity: 4.5 T
Scaled Capacity Applied:
Pct Util: 0.0
Volume Status: Full
Access: Read/Write
Pct. Reclaimable Space: 100.0
Scratch Volume?: Yes
In Error State?: No
Number of Writable Sides: 1
Number of Times Mounted: 569
Write Pass Number: 1
Approx. Date Last Written: 03/18/2016 22:06:35
Approx. Date Last Read: 02/20/2016 22:14:39
Date Became Pending:
Number of Write Errors: 0
Number of Read Errors: 0
Volume Location:
Volume is MVS Lanfree Capable : No
Last Update by (administrator):
Last Update Date/Time: 02/20/2016 22:13:59
Begin Reclaim Period:
End Reclaim Period:
Drive Encryption Key Manager: None
Logical Block Protected: No




tsm: ASC-TSM>q volume ASC015L6 f=d

Volume Name: ASC015L6
Storage Pool Name: ORACLE_TAPE
Device Class Name: LTOCLASS
Estimated Capacity: 4.4 T
Scaled Capacity Applied:
Pct Util: 0.0
Volume Status: Full
Access: Read/Write
Pct. Reclaimable Space: 100.0
Scratch Volume?: Yes
In Error State?: No
Number of Writable Sides: 1
Number of Times Mounted: 559
Write Pass Number: 1
Approx. Date Last Written: 04/15/2016 02:08:59
Approx. Date Last Read: 03/27/2016 10:36:17
Date Became Pending:
Number of Write Errors: 0
Number of Read Errors: 0
Volume Location:
Volume is MVS Lanfree Capable : No
Last Update by (administrator):
Last Update Date/Time: 03/18/2016 22:05:45
Begin Reclaim Period:
End Reclaim Period:
Drive Encryption Key Manager: None
Logical Block Protected: No

 

[marclant]

I have checked both the tapes and found that both tapes value in Pct. Reclaimable space is shown as 100.0, find below the output. kindly advice

Short answer: you need to run reclamation on that storage pool

Long answer: http://www.ibm.com/support/knowledg...ibm.itsm.srv.doc/c_reclaim_works.html?lang=en