Preemptive demount in an automated storage library
    1.
    再颁专利
    Preemptive demount in an automated storage library 失效
    自动存储库中的抢占式卸载

    公开(公告)号:USRE36286E

    公开(公告)日:1999-08-31

    申请号:US526818

    申请日:1995-08-23

    摘要: 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.

    摘要翻译: 公开了一种在自动存储库中选择用于拆卸的数据存储介质的方法,以及用于其的自动存储库和程序产品。 库中的所有外围存储设备被占用并且一个或多个这样的设备在预定时间内保持不活动状态时,允许存储介质的抢先卸载。 存储介质可以被拆卸以服务现有的安装请求,只要其中安装介质的外围存储设备是不活动的。 然而,还需要确保空设备的可用性来为未来的安装请求提供服务,特别是在仅具有单个夹持机构的库中。 因此,即使没有挂载请求正在等待,也会不断监视外围存储设备的状态。 如果外围存储设备都被占用,并且这些设备中的一个或多个在预定时间内保持不活动,则最少使用的存储介质被拆卸并传送到库中的存储单元。