A few years ago I was working for a very large insurance company at one of the largest data centers in the US if not the world.
We were doing a migration to z/OS 1.4 back then. Just before cutover, the tape management system, IBM's RMM (Removable Media Management), inadvertently released 1000's of tapes to the SCRATCH pool by mistake. Fortunately, a sharp tech support person caught the anomaly first thing in the morning. Had that condition persisted 24 hours it would have been a complete disaster, nightmare. The RMM bug arose from sharing the tape catalog under certain conditions and inspired an immediate fix by IBM. Needless to say there are also software reasons for eliminating tape. On Tue, Jun 22, 2010 at 5:48 PM, Schwarz, Barry A < barry.a.schw...@boeing.com> wrote: > Doesn't anyone exercise the DR plan anymore? If so, without reading the > backups? > > -----Original Message----- > From: IBM Mainframe Discussion List [mailto:ibm-m...@bama.ua.edu] On > Behalf Of R.S. > Sent: Tuesday, June 22, 2010 12:41 PM > To: IBM-MAIN@bama.ua.edu > Subject: Re: Disk replacing Tape? > > W dniu 2010-06-22 18:40, Hal Merritt pisze: > > Most all backups are WORN. They are created, perhaps sent off site, and > returned to the scratch pool never having been read. An archival backup > would not be returned to scratch because it would most likely exceed its > expected life while in storage. > > We observed very similar thing: vast majority of our backups are never > read! We work on eliminating those never-read backups. That could save > us a lot of resources. <vbg> > > ---------------------------------------------------------------------- > 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 > -- George Henke (C) 845 401 5614 ---------------------------------------------------------------------- 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
