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公开(公告)号：US5388016A
公开(公告)日：1995-02-07
申请号：US843213
申请日：1992-02-28
CPC分类号： G06F3/0601 , G11B15/1816 , G11B20/1209 , G11B27/107 , G11B27/11 , G11B27/328 , G06F2003/0698 , G11B2220/20 , G11B2220/65 , G11B2220/90 , G11B2220/913
摘要： A magnetic tape data management method and apparatus is described that reduces the access time for updating and referring to directory data. At the time of accessing data on a magnetic tape loaded in a magnetic tape subsystem, directory data for the magnetic tape is, in response to the completion of the processing of data, recorded in a region located near the place at which the magnetic tape head is positioned at that time, said region constituting a directory data region (DDR). Further, a directory data memory for recording directory data from the magnetic tape is provided in the magnetic tape subsystem, remote from the tape. At the time of accessing data on the magnetic tape loaded in the magnetic tape subsystem, directory data for the magnetic tape processing is, in response to completion of the processing of data, recorded in the directory data memory in the magnetic tape subsystem.
摘要翻译： 描述了一种减少用于更新和参考目录数据的访问时间的磁带数据管理方法和装置。 在访问磁带子系统中装载的磁带上的数据时，磁带的目录数据响应于数据处理的完成而被记录在位于磁带头附近的区域 位于此时，所述区域构成目录数据区域（DDR）。 此外，用于从磁带记录目录数据的目录数据存储器设置在远离磁带的磁带子系统中。 在访问装载在磁带子系统中的磁带上的数据时，磁带处理的目录数据是响应于数据处理完成而被记录在磁带子系统中的目录数据存储器中的。
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公开(公告)号：US5638508A
公开(公告)日：1997-06-10
申请号：US208044
申请日：1994-03-09
CPC分类号： G06F11/1471
摘要： A data processing system for processing transactions, wherein a log record to be used for recovery of the system is written into a log file for system recovery in synchronism with the end of a transaction, and log records other than resident information are is written for a plurality of transactions into a log file for archives.
摘要翻译： 一种用于处理事务的数据处理系统，其中用于恢复系统的日志记录被写入用于系统恢复的日志文件，与事务的结束同步，并且写入除驻留信息之外的日志记录，用于 将多个事务转换成日志文件以进行归档。
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