Method for reordering access to reduce total seek time on tape media
    1.
    发明授权
    Method for reordering access to reduce total seek time on tape media 有权
    重新排序访问的方法可减少磁带介质上的总搜索时间

    公开(公告)号:US09021175B2

    公开(公告)日:2015-04-28

    申请号:US12862198

    申请日:2010-08-24

    IPC分类号: G06F13/00 G06F13/28 G06F3/06

    摘要: A method, system and computer-usable medium are disclosed for reordering User Data Segment (UDS) lists to reduce seek times when accessing data stored on tape media. A host application sends a list of UDSs to a target tape drive and requests the tape drive to reorder the list to provide better performance. An ordered list of target User data Segments to retrieve from a target tape media is received. Information related to the location of each UDS on the target media is processed to determine its corresponding physical position on the tape media. The resulting physical positions are then processed to generate a reordered UDS list, where the order of the User Data Segments is reordered according to their physical location on the target tape media. The reordered list of User Data Segments is then used to perform seek, reposition and read operations to read User Data Segments from the tape media.

    摘要翻译: 公开了一种用于重新排序用户数据段(UDS)列表的方法,系统和计算机可用介质,以减少访问存储在磁带介质上的数据时的查找时间。 主机应用程序将UDS列表发送到目标磁带机,并请求磁带机重新排列列表以提供更好的性能。 目标用户数据的有序列表接收到从目标磁带介质检索的段。 处理与目标介质上的每个UDS的位置有关的信息,以确定其在磁带介质上的对应的物理位置。 然后处理所产生的物理位置以产生重新排序的UDS列表,其中用户数据段的顺序根据其在目标磁带介质上的物理位置重新排序。 然后,用户数据段的重新排序列表用于执行搜索,重新定位和读取操作,以从磁带介质读取用户数据段。

    Method for Reordering Access to Reduce Total Seek Time on Tape Media
    2.
    发明申请
    Method for Reordering Access to Reduce Total Seek Time on Tape Media 有权
    重新排序访问方法可减少磁带介质上的总寻求时间

    公开(公告)号:US20120054428A1

    公开(公告)日:2012-03-01

    申请号:US12862198

    申请日:2010-08-24

    IPC分类号: G06F12/00

    摘要: A method, system and computer-usable medium are disclosed for reordering User Data Segment (UDS) lists to reduce seek times when accessing data stored on tape media. A host application sends a list of UDSs to a target tape drive and requests the tape drive to reorder the list to provide better performance. An ordered list of target User data Segments to retrieve from a target tape media is received. Information related to the location of each UDS on the target media is processed to determine its corresponding physical position on the tape media. The resulting physical positions are then processed to generate a reordered UDS list, where the order of the User Data Segments is reordered according to their physical location on the target tape media. The reordered list of User Data Segments is then used to perform seek, reposition and read operations to read User Data Segments from the tape media.

    摘要翻译: 公开了一种用于重新排序用户数据段(UDS)列表的方法,系统和计算机可用介质,以减少访问存储在磁带介质上的数据时的查找时间。 主机应用程序将UDS列表发送到目标磁带机,并请求磁带机重新排列列表以提供更好的性能。 目标用户数据的有序列表接收到从目标磁带介质检索的段。 处理与目标介质上的每个UDS的位置有关的信息,以确定其在磁带介质上的对应的物理位置。 然后处理所产生的物理位置以产生重新排序的UDS列表,其中用户数据段的顺序根据其在目标磁带介质上的物理位置重新排序。 然后,用户数据段的重新排序列表用于执行搜索,重新定位和读取操作,以从磁带介质读取用户数据段。

    VOLUME COHERENCY VERIFICATION FOR SEQUENTIAL-ACCESS STORAGE MEDIA
    3.
    发明申请
    VOLUME COHERENCY VERIFICATION FOR SEQUENTIAL-ACCESS STORAGE MEDIA 有权
    用于顺序访问存储介质的容量验证

    公开(公告)号:US20110219199A1

    公开(公告)日:2011-09-08

    申请号:US12719441

    申请日:2010-03-08

    IPC分类号: G06F12/00

    摘要: A method for determining volume coherency is disclosed herein. Upon completing a first write job to a volume partition, the method makes a copy of a volume change reference (VCR) value associated with the volume. The VCR value is configured to change in a non-repeating manner each time content on the volume is modified. Prior to initiating a second write job to the volume partition, the method retrieves the copy and compares the copy to the VCR value. If the copy matches the VCR value, the method determines that a logical object on the partition was not modified between the first and second write jobs. If the copy does not match the VCR value, the method determines that the logical object on the partition was modified between the first and second write jobs. A corresponding system and computer program product are also disclosed herein.

    摘要翻译: 本文公开了一种用于确定卷一致性的方法。 完成对卷分区的第一次写入作业后,该方法将创建与卷相关联的卷更改引用(VCR)值的副本。 每次修改卷上的内容时,将VCR值配置为以不重复的方式进行更改。 在向卷分区启动第二次写入作业之前,该方法将检索副本并将该副本与VCR值进行比较。 如果复制与VCR值匹配,则该方法确定在第一和第二写入作业之间没有修改分区上的逻辑对象。 如果副本与VCR值不匹配,则该方法确定分区上的逻辑对象在第一个和第二个写入作业之间已被修改。 本文还公开了相应的系统和计算机程序产品。

    Monitoring of extent of writing of unobscured data to improve erase performance on a magnetic medium
    6.
    发明授权
    Monitoring of extent of writing of unobscured data to improve erase performance on a magnetic medium 有权
    监控视野数据的写入程度,以提高磁介质上的擦除性能

    公开(公告)号:US08799612B2

    公开(公告)日:2014-08-05

    申请号:US13551512

    申请日:2012-07-17

    摘要: A system according to one embodiment includes a processor; logic in the processor and/or a memory configured to determine a furthest physical position on a magnetic medium that unobscured data has been written to; and logic configured to store an indicator of the furthest physical position on at least one of the magnetic medium and a memory coupled thereto. A system according to another embodiment includes a processor; logic in the processor and/or a memory configured to receive an instruction to obscure data on a magnetic medium; logic configured to read an indicator of a furthest physical position on the magnetic medium that unobscured data has been written to; and logic configured to cause obscuring of the unobscured data on the magnetic medium, and terminating the obscuring upon reaching the physical position in the indicator.

    摘要翻译: 根据一个实施例的系统包括处理器; 处理器中的逻辑和/或被配置为确定已经写入数据的磁性介质上的最远物理位置的存储器; 以及逻辑,其被配置为存储所述磁介质和与其耦合的存储器中的至少一个上的最远物理位置的指示符。 根据另一实施例的系统包括处理器; 处理器中的逻辑和/或被配置为接收用于遮蔽磁介质上的数据的指令的存储器; 被配置为读取已读取数据已被写入的磁介质上最远物理位置的指示符的逻辑; 以及逻辑,其被配置为引起所述磁性介质上的所述不可视数据的模糊,并且在到达所述指示器中的所述物理位置时终止所述模糊。

    MONITORING OF EXTENT OF WRITING OF UNOBSCURED DATA TO IMPROVE ERASE PERFORMANCE ON A MAGNETIC MEDIUM
    7.
    发明申请
    MONITORING OF EXTENT OF WRITING OF UNOBSCURED DATA TO IMPROVE ERASE PERFORMANCE ON A MAGNETIC MEDIUM 有权
    监测未知数据的写入范围,以提高磁性介质的擦除性能

    公开(公告)号:US20140025885A1

    公开(公告)日:2014-01-23

    申请号:US13551512

    申请日:2012-07-17

    IPC分类号: G06F12/00

    摘要: A system according to one embodiment includes a processor; logic in the processor and/or a memory configured to determine a furthest physical position on a magnetic medium that unobscured data has been written to; and logic configured to store an indicator of the furthest physical position on at least one of the magnetic medium and a memory coupled thereto. A system according to another embodiment includes a processor; logic in the processor and/or a memory configured to receive an instruction to obscure data on a magnetic medium; logic configured to read an indicator of a furthest physical position on the magnetic medium that unobscured data has been written to; and logic configured to cause obscuring of the unobscured data on the magnetic medium, and terminating the obscuring upon reaching the physical position in the indicator.

    摘要翻译: 根据一个实施例的系统包括处理器; 处理器中的逻辑和/或被配置为确定已经写入数据的磁性介质上的最远物理位置的存储器; 以及逻辑,其被配置为存储所述磁介质和与其耦合的存储器中的至少一个上的最远物理位置的指示符。 根据另一实施例的系统包括处理器; 处理器中的逻辑和/或被配置为接收用于遮蔽磁介质上的数据的指令的存储器; 被配置为读取已读取数据已被写入的磁介质上最远物理位置的指示符的逻辑; 以及逻辑,其被配置为引起所述磁性介质上的所述不可视数据的模糊,并且在到达所述指示器中的所述物理位置时终止所述模糊。

    Method, system, and apparatus for re-conveying input/output operations utilizing a sequential-access data storage device secondary communication port
    8.
    发明授权
    Method, system, and apparatus for re-conveying input/output operations utilizing a sequential-access data storage device secondary communication port 有权
    用于使用顺序存取数据存储装置辅助通信端口重新传送输入/输出操作的方法,系统和装置

    公开(公告)号:US09383938B2

    公开(公告)日:2016-07-05

    申请号:US11405796

    申请日:2006-04-18

    IPC分类号: G06F3/06 G06F11/14

    摘要: A method, system, and apparatus for re-conveying input/output (I/O) operations utilizing a sequential-access data storage device secondary communication port are disclosed. In accordance with one embodiment, a method is provided which comprises receiving an input/output (I/O) operation request via a first communication port of a primary data storage device, processing the I/O operation request utilizing the primary data storage device, and re-conveying the I/O operation request to a secondary data storage device substantially simultaneously with the processing via a second communication port of the primary data storage device. In the described embodiment, the primary data storage device comprises a sequential-access data storage device.

    摘要翻译: 公开了一种使用顺序访问数据存储设备辅助通信端口重新传送输入/输出(I / O)操作的方法,系统和装置。 根据一个实施例,提供了一种方法,其包括经由主数据存储装置的第一通信端口接收输入/输出(I / O)操作请求,使用主数据存储装置处理I / O操作请求, 并且经由主数据存储装置的第二通信端口与所述处理基本同时地将I / O操作请求重新传送到辅助数据存储装置。 在所描述的实施例中,主数据存储装置包括顺序访问数据存储装置。

    Use of Indirect Data Keys for Encrypted Tape Cartridges
    9.
    发明申请
    Use of Indirect Data Keys for Encrypted Tape Cartridges 有权
    对加密磁带盒使用间接数据密钥

    公开(公告)号:US20080273696A1

    公开(公告)日:2008-11-06

    申请号:US11742819

    申请日:2007-05-01

    IPC分类号: H04L9/00 H04K1/00

    摘要: A method, system and program are provided for enabling selective access to multiple users' encrypted data in a single storage cartridge. A unique, derived key is generated for each user's data by performing cryptographic operations on a combination of a common base key and metadata related to the data to be encrypted (e.g. its total block count). The base data key is wrapped with one or more encryption keys to form one or more encryption encapsulated data keys (EEDKs). The base key and the derived key are wrapped to create a session encrypted data key (SEDK), which along with the EEDKs, are conveyed to the tape drive, where the SEDK is decrypted. The EEDKs are then stored in one or more places on the storage cartridge. The base key and the derived key are used to encrypt a predetermined user's data, with the derived key stored on the cartridge with the encrypted data. The encrypted data may be subsequently decrypted by retrieving the EEDK and decrypting it with a decryption key to extract the base data key. The extracted base data key can then be used with other information to calculate the derived key. Once calculated, the derived key is used to decrypt its associated encrypted data.

    摘要翻译: 提供了一种方法,系统和程序,用于使得能够选择性地访问单个存储盒中的多个用户的加密数据。 通过对与要加密的数据相关的公共基本密钥和元数据的组合(例如,其总块计数)执行加密操作,为每个用户的数据生成唯一的派生密钥。 基本数据密钥用一个或多个加密密钥包裹以形成一个或多个加密封装数据密钥(EEDK)。 基础密钥和派生密钥被包装以创建会话加密数据密钥(SEDK),其与EEDK一起被传送到SEDK被解密的磁带驱动器。 然后将EEDK存储在存储盒上的一个或多个位置。 基本密钥和派生密钥用于加密预定用户的数据,其中导出的密钥存储在盒上,其中加密的数据。 可以随后通过检索EEDK并用解密密钥对加密数据进行解密,以提取基本数据密钥。 然后,提取的基本数据密钥可以与其他信息一起使用以计算导出密钥。 一旦计算,派生密钥用于解密其相关联的加密数据。

    Distributed key store
    10.
    发明申请
    Distributed key store 审中-公开
    分布式密钥存储

    公开(公告)号:US20080063209A1

    公开(公告)日:2008-03-13

    申请号:US11470795

    申请日:2006-09-07

    IPC分类号: H04L9/00

    CPC分类号: G06F21/80 G06F2221/2121

    摘要: A method, system and program are provided for enabling access to encrypted data in a storage cartridge by wrapping the data key used to encrypt the data with one or more encryption keys (e.g., a public key from a public/private key pair) to form one or more encryption encapsulated data keys (EEDKs) and then storing the EEDK(s) on the storage cartridge along with the encrypted data. The encrypted data may be decoded by retrieving the EEDK from the storage cartridge, decrypting the EEDK with a decryption key (e.g., the private key from the public/private key pair) to extract the underlying data key, and then using the extracted data key to decrypt the encrypted data.

    摘要翻译: 提供了一种方法,系统和程序,用于通过用一个或多个加密密钥(例如,公共/私人密钥对的公共密钥)包裹用于加密数据的数据密钥来使得能够访问存储盒中的加密数据,以形成 一个或多个加密封装数据密钥(EEDK),然后将EEDK与加密数据一起存储在存储盒上。 可以通过从存储盒检索EEDK来解密加密数据,使用解密密钥(例如,公/私钥对中的私钥)解密EEDK以提取底层数据密钥,然后使用提取的数据密钥 解密加密数据。