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公开(公告)号：EP1145235B1
公开(公告)日：2002-12-18
申请号：EP99955108.8
申请日：1999-10-20
申请人： EXABYTE CORPORATION
发明人： BEAVERS, Kelly, J. , BLATCHLEY, Michael, A. , DETRO, David, L. , TURNER, Christopher, J. , ZACZEK, Thomas, E.
CPC分类号： G11B5/0086 , G11B5/00878 , G11B15/04 , G11B15/06 , G11B15/093 , G11B15/1875 , G11B15/43 , G11B15/4673
摘要： A method and apparatus for varying track recording speed to maximize host-to-tape data transfer rates is presented. Variable data transfer rates of host systems and networks are accommodated by continually adjusting the tape speed to match the tape drive to the host's actual transfer rate. The speed of the tape is adjusted according to both the level of data present in the tape drive data buffer and whether the current mode of the drive is write mode or read mode. In the preferred embodiment, when the tape speed is accelerated or decelerated while writing a number of data track pairs to tape, a predetermined number of dummy track pairs are first written to tape at the current speed. On the next write head phase after the speed is increased or decreased as appropriate while the read heads are over the track, a predetermined number of dummy track pairs followed by more data track pairs are written to the tape at the new speed.
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公开(公告)号：EP1125295B1
公开(公告)日：2006-11-08
申请号：EP99955115.3
申请日：1999-10-20
申请人： EXABYTE CORPORATION
发明人： ZACZEK, Thomas, E.
IPC分类号： G11B20/18
CPC分类号： G11B20/1883 , G11B20/1833 , G11B20/1879 , G11B2220/90
摘要： A method for rewriting track packets that fail a check-after-write test onto a track of a storage medium is presented. Local packet address information is included in the track packet itself to allow track packets to be written to the storage medium in any addressing order. This allows a single packet to be rewritten along a later track among other track packets that are being recorded for the first time, thereby reducing rewrite track overhead and eliminating the requirement for a lengthy backhitching sequence.
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