-
公开(公告)号：CA2039364C
公开(公告)日：1995-08-29
申请号：CA2039364
申请日：1991-03-28
Applicant: IBM
Inventor： HARTUNG JOSEPH CHARLES , MONAHAN CHRISTOPHER JOHN , THRALL JESSE LEE , WILLSON DENNIS LEE , WINARSKI DANIEL JAMES
Abstract: A method for selecting data storage media for demount in an automated storage library, and an automated storage library and program product therefor are disclosed. Preemptive demount of storage media is permitted when all peripheral storage devices in the library are occupied and one or more of such devices remains inactive for a predetermined time. Storage media may be demounted to service existing mount requests, provided the peripheral storage devices in which the media are mounted are inactive. There is also a need, however, to ensure the availability of an empty device to service future mount requests, particularly in libraries having only a single gripper mechanism. Thus, even when no mount requests are pending, the status of the peripheral storage devices is continually monitored. If the peripheral storage devices are all occupied, and one or more of such devices remains inactive for the predetermined time, the least recently used storage medium is demounted and transferred to a storage cell in the library.
Search Results
3
records
(took 0.017 seconds)
