Boots – shoes – and leggings
Patent
1991-04-10
1994-06-28
Lee, Thomas C.
Boots, shoes, and leggings
395425, 395650, 395725, 364DIG2, 364243, 3642331, G06F 1200
Patent
active
053255232
ABSTRACT:
The response time of an automated optical disk library is improved by writing object delete requests to a deleted objects table before actually physically deleting those objects. By collecting object delete requests in a list of pending deletes for each volume in the library the number of necessary mounts are reduced. The delete requests in a list of pending deletes for a given volume are physically deleted just prior to performing a write or defrag request for that volume. The list of pending deletes for that volume are then deleted from the deleted objects table. During idle periods a predetermined number of pending delete requests will be performed for the currently mounted volume. If there are no pending delete requests for the currently mounted volume then a predetermined number of pending delete requests will be performed on the opposite side of the currently mounted volume. When all pending delete requests for both the currently mounted volume and the opposite side thereof have been completed the library-resident volume having the greatest amount of space to be deleted will be mounted and a predetermined number of pending deletes will be performed on that volume. This process continues as long as there are pending deletes. If all of the objects on an optical disk have expired then the next time that disk is mounted it will be reformatted.
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Patent Appln. Ser. No. 07/317,493, Gallo et al., Filed Mar. 1, 1989, Assigned to IBM.
Beglin Thomas W.
Zelazny Kimberly M.
International Business Machines - Corporation
Lee Thomas C.
Lobsenz C. B.
Oblon Michael A.
Schecter M. W.
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