I've lost the messages that were discussing it, but some people were discussing a problem similar to one we've been having, where some volumes mysteriously become "inaccessible". I searched on IBMLink, and found several APARs describing this problem. IBMese is sometimes hard to read, so I haven't quite figured out what releases this problem exists in, or where it gets fixed, but it's a known problem and the circumvention is to restart the TSM server.
Reference APARs PQ61907, PQ55669 IC32821 IC32822 IC32823 IC32824 -- Matt Simpson -- OS/390 Support 219 McVey Hall -- (859) 257-2900 x300 University Of Kentucky, Lexington, KY 40506 <mailto:msimpson@;uky.edu> mainframe -- An obsolete device still used by thousands of obsolete companies serving billions of obsolete customers and making huge obsolete profits for their obsolete shareholders. And this year's run twice as fast as last year's.