Darth, Are both devices 841C and 8401 inside the same MDL and managed as part of the same Storage Group? The problem with CA-1 subpooling and most robotic/virtual libraries is that tapes are not mounted based on the TMS001/TMS002 mount messages, but instead based on their own rules. Now, a BTLS managed IBM robot does support a few sub-pools; their restriction is that the name of the subpool must begin with SCRTCH followed by a number 1-9 (as in SCRTCH1 or SCRTCH2).
With a true manual environment (where the operator mounts the tapes), the TMS001/2 mount message is intercepted by the operator. With a robotic/virtual environment; this is not always the case. With a Oracle/STK robot, they have added support for the TMS002 mount message. But I do not believe that HDS MDL has support to mount the correct subpool tape based on a TMS002 mount message. Russell Witt CA 1 L2 Support Manager -----Original Message----- From: IBM Mainframe Discussion List [mailto:ibm-m...@bama.ua.edu]on Behalf Of Darth Keller Sent: Tuesday, November 30, 2010 3:04 PM To: IBM-MAIN@bama.ua.edu Subject: CA1, tape pooling, and SMS controlled Libraries We've recently installed an HDS MDL. In the course of the installation, we decided we wanted to stage things so that down the road we can do remote replication of tape. Basically we don't intend to replicate the entire library - we'll replicate tapes which have been identified as needing off-site vaulting. We've done this by implementing CA1 sub-pooling which allows us to direct a sub-set of datasets to a specific range of tape volsers. The volser's to be vaulted all start with the first character of 'V" and the sub-pool is named "DRVAULT". The intention is that down the road at some point, we'll have another MDL at a remote site and we'll use 'magic' HDS functionality to replicate the "V" volumes to the remote MDL. This has been running successfully since late July. However, we've recently had 2 different jobs abend because it appears that CA1 is calling for a tape from the wrong aub-pool. The job is re-submitted approx. 15 minutes later and runs successfully - no changes to the job, no changes to the CA1 NSM table, no changes to the MDL in the 15 minute interval. This is what the messages look like when it runs successfully: *IEC501A M 841C,PRIVAT,SL,COMP,jobname, *TMS002 IEC501A M 841C,DRVAULT,SL,COMP IECTMS9 841C,V95538,jobname,OUTFILE , The is the sequence of messages when it runs amok: *IEC501A M 8401,PRIVAT,SL,COMP,jobname, *TMS001 IEC501A M 8401,PRIVAT,SL,COMP,jobname, IECTMS3 8401,M33439,IS NOT SCRTCH (80) IEC518I SOFTWARE ERRSTAT: REJTMS 8401,M33439,SL,jobname, So we opened an issue with CA1 & got the following response: "Since you have this defined as a manual tape library subpooling is not supported. CA1 subpooling is NOT supported with IBM SMS-managed tape libraries (ATL or MTL)." I find this response interesting as I'm not seeing how an SMS Library comes into play in this case - the library is actually returning a scratch tape from the pool CA1 is requesting - for some reason, it appears to me that CA1 is sometimes requesting the wrong sub-pool. So my question is anyone else using CA1 sub-pooling and SMS-managed tape libraries? thanks - dd keller ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
