We have been using the SUN/STK CDRT ( was CVDT ) software product for about 3 years. Recently, we have asked SUN/STK for a couple of enhancements to the product that we feel will reduce the possibility of an 'error condition' we sometimes encounter during our D/R tests. The feedback we have received from SUN/STK seems to indicate that no other user of CDRT ( CVDT ) performs D/R testing like we do and therefore no other user encounters the 'error condition' we do.
The 'error condition' ( that is what our Operations area describes the situation ) we sometimes encounter involves the recall of a 'virtual tape volume' ( SUN/STK calls them VTVs ) on the D/R z/OS system. Sometimes, we need to recall a VTV that was used just prior to the CDRT ( CVDT ) 'setup' job that is run on the 'production host' system. That VTV happens to reside on a MVC ( ours are SUN/STK 9840 tape media ) that is still mounted on a RTD that is owned by the 'production host' system. The SUN/STK software on the D/R z/OS image knows the MVC volume was mounted on a RTD drive during the CDRT ( CVDT ) 'setup' process however it doesn't have access to that RTD drive. So, the SUN/STK sofware issues a WTOR to ask for help. Our enhancement request to SUN/STK suggested that during the CDRT (CVDT ) 'setup' process, the software dismount all MVC's from RTD's that are owned by any 'production host' system(s). Also, we suggested that all dismounted MVC's be marked 'read only', which would prevent the SUN/STK software from re-mounting those MVC's for output. The software would have to find a 'fresh' MVC in order to offload any newly created VTV's. We have been told no other CDRT ( CVDT ) user has encountered ( well maybe reported to SUN/STK ) the 'error condition' above. SUN/STK told us that other CDRT ( CVDT ) users don't access near current VTV's during a D/R test. Instead, the user will 'restore' their z/OS 'system' from their last weekends full volume dumps. So I am curious. Does anyone using the SUN/STK CDRT ( CVDT ) software use/access near current VTV's ( recently created, i.e. within a few minutes prior to the CDRT 'setup' process ) on the D/R z/OS image? Or do you 'restore' your z/OS 'system' from non-current VTV's that reside on MVC's that cannot be added to ( i.e. the MVC is marked 'full' )? Thank you in advance for your help. Glenn Miller ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
