Apparatus and method to maintain information in one or more virtual volume aggregates comprising a plurality of virtual volumes
    1.
    发明授权
    Apparatus and method to maintain information in one or more virtual volume aggregates comprising a plurality of virtual volumes 失效
    在包括多个虚拟卷的一个或多个虚拟卷集合中维护信息的装置和方法

    公开(公告)号:US06889302B2

    公开(公告)日:2005-05-03

    申请号:US10230826

    申请日:2002-08-29

    摘要: A method and apparatus for maintaining information in one or more virtual volume aggregates comprising a plurality of virtual volumes. The method maintains a plurality of virtual volumes in a first information storage medium, and forms one or more virtual volume aggregates, where each of the of virtual volumes is assigned to one of the virtual volume aggregates. The method further provides a plurality of second information storage media. The method then identifies the least recently used virtual volume, and writes the virtual volume aggregate comprising that least recently used virtual volume to one or more second information storage media. Thereafter, the method determines if space is required on said first information storage medium. If space is required on said first information storage medium, the method selects the virtual volume aggregate comprising the least recently used virtual volume and removes from said first information storage medium each virtual volume in that selected virtual volume aggregate that has been written to one or more second information storage media.

    摘要翻译: 一种用于在包括多个虚拟卷的一个或多个虚拟卷集合中维护信息的方法和装置。 该方法在第一信息存储介质中维护多个虚拟卷,并且形成一个或多个虚拟卷聚合,其中每个虚拟卷被分配给虚拟卷聚合之一。 该方法还提供多个第二信息存储介质。 然后,该方法识别最近最少使用的虚拟卷,并将包括最近最少使用的虚拟卷的虚拟卷聚合写入一个或多个第二信息存储介质。 此后,该方法确定在所述第一信息存储介质上是否需要空间。 如果在所述第一信息存储介质上需要空间,则该方法选择包含最近最少使用的虚拟卷的虚拟卷聚合,并且从所述第一信息存储介质中删除已被写入一个或多个的所选择的虚拟卷聚合中的每个虚拟卷 第二信息存储媒体。

    Apparatus and method to form one or more premigration aggregates comprising a plurality of least recently accessed virtual volumes
    2.
    发明授权
    Apparatus and method to form one or more premigration aggregates comprising a plurality of least recently accessed virtual volumes 失效
    用于形成包括多个最近最少访问的虚拟卷的一个或多个预迁移聚合的装置和方法

    公开(公告)号:US06938120B2

    公开(公告)日:2005-08-30

    申请号:US10230684

    申请日:2002-08-29

    摘要: A method to form one or more premigration aggregates comprising a plurality of least recently accessed virtual volumes disposed in an information storage medium. The method determines the number (R) of virtual volumes to remove from the information storage medium, selects the (R) least recently accessed virtual volumes, forms one or more premigration aggregates comprising those least recently accessed virtual volumes, and assigns each of the (R) selected virtual volumes to one of those premigration aggregates. The method establishes a minimum transfer size and determines if any of the premigration aggregates are larger than that minimum transfer size. The method writes to one or more physical volumes each of the premigrate aggregates that are larger than the minimum transfer size. Thereafter, the method removes from the information storage medium each of the premigration aggregates written to physical volumes.

    摘要翻译: 一种形成一个或多个预迁移聚合的方法,包括设置在信息存储介质中的多个最近访问的虚拟卷。 该方法确定要从信息存储介质中删除的虚拟卷的数量(R),选择(R)最近最近访问的虚拟卷,形成包括那些最近访问的虚拟卷的一个或多个预迁移聚合,并且分配( R)将选定的虚拟卷添加到这些迁移聚合之一。 该方法建立最小传输大小,并确定任何预迁移聚合是否大于最小传输大小。 该方法写入一个或多个物理卷,每个预转换聚合大于最小传输大小。 此后,该方法从信息存储介质中删除写入物理卷的每个预迁移聚合。

    Apparatus and method to assign pseudotime attributes to one or more logical volumes
    3.
    发明授权
    Apparatus and method to assign pseudotime attributes to one or more logical volumes 失效
    将伪时间属性分配给一个或多个逻辑卷的装置和方法

    公开(公告)号:US06895466B2

    公开(公告)日:2005-05-17

    申请号:US10230831

    申请日:2002-08-29

    摘要: A method to assign a premigration pseudotime attribute and a stubbing pseudotime attribute to a logical volume. The method defines a plurality of host requests, and associates with each host request a pseudotime range. The method further maintains a logical volume in a first information storage medium at a first time, and determines if a user provides a host request for that logical volume. If a user provides a host request for that logical volume, then the method assigns to the logical volume a premigration pseudotime attribute, and a stubbing pseudotime attribute, comprising a time within the pseudotime range associated with the host request. If, on the other hand, a user does not provide a host request for the logical volume, then the method assigns to that logical volume the first time as said premigration pseudotime attribute, and said first time as said stubbing pseudotime attribute. The method saves the assigned premigration pseudotime attribute and the assigned stubbing pseudotime attribute for later use.

    摘要翻译: 将一个预迁移伪时间属性和一个存根伪时间属性分配给逻辑卷的方法。 该方法定义了多个主机请求,并且与每个主机请求伪随机范围相关联。 该方法还在第一时间内维护第一信息存储介质中的逻辑卷,并且确定用户是否提供对该逻辑卷的主机请求。 如果用户提供对该逻辑卷的主机请求,则该方法向逻辑卷分配预迁移伪时间属性和包含与主机请求相关联的伪时间范围内的时间的存根伪时间属性。 另一方面,如果用户不提供对逻辑卷的主机请求,则该方法首次作为所述预迁移伪时间属性分配给该逻辑卷,并且所述第一次作为所述存根伪时间属性。 该方法保存分配的预迁移伪时间属性和分配的存根伪时间属性供以后使用。

    System and method to guarantee overwrite of expired data in a virtual tape server

    公开(公告)号:US06983351B2

    公开(公告)日:2006-01-03

    申请号:US10120911

    申请日:2002-04-11

    IPC分类号: G06F12/00

    CPC分类号: G06F3/0601 G06F2003/0697

    摘要: A system and method for guaranteeing overwrite of expired data in a media device, the data being organized according to logical units provided on media devices organized as physical volumes. The method comprises the steps of: maintaining information associated with a status of a physical volume, and updating a physical volume's status information based upon a combination of that volume's prior status and that volume's current status; specifying a time duration that expired logical unit data may remain on a physical volume; based upon the volume's updated status information, determining whether a selected volume has expired data longer than the specified time duration; and, overwriting contents of the volume having data that has expired longer than the specified time duration.

    Apparatus and method to export and then import a logical volume with assigned storage attributes
    5.
    发明授权
    Apparatus and method to export and then import a logical volume with assigned storage attributes 有权
    用于导出并导入具有分配存储属性的逻辑卷的设备和方法

    公开(公告)号:US06973534B2

    公开(公告)日:2005-12-06

    申请号:US10230501

    申请日:2002-08-29

    IPC分类号: G06F3/06 G06F12/00

    摘要: A method to export and then import a logical volume with assigned storage attributes, from a first information storage medium to a second information storage medium. The method maintains a logical volume in a first information storage medium. The method assigns one or more first storage attributes to that logical volume. The method further includes forming an import list logical volume. The method further includes defining a plurality second storage attributes. The method further includes importing the logical volume, and the assigned first storage attributes, into a second information storage medium. The method then determines if the import list logical volume specifies use of one or more second storage attributes. If the import list logical volume specifies use of one or more second storage attributes, then the method assigns to the logical volume those one or more second storage attributes.

    摘要翻译: 一种用于从第一信息存储介质导出然后将具有分配的存储属性的逻辑卷导入到第二信息存储介质的方法。 该方法在第一信息存储介质中维护逻辑卷。 该方法将一个或多个第一个存储属性分配给该逻辑卷。 该方法还包括形成导入列表逻辑卷。 该方法还包括定义多个第二存储属性。 该方法还包括将逻辑卷和分配的第一存储属性导入第二信息存储介质。 然后,该方法确定导入列表逻辑卷是否指定使用一个或多个第二存储属性。 如果导入列表逻辑卷指定使用一个或多个第二个存储属性,则该方法将逻辑卷分配给一个或多个第二个存储属性。