Host-available device block map for optimized file retrieval from serpentine tape drives
    2.
    发明授权
    Host-available device block map for optimized file retrieval from serpentine tape drives 失效
    主机可用的设备块映射,用于从蛇形磁带驱动器优化文件检索

    公开(公告)号:US06349356B2

    公开(公告)日:2002-02-19

    申请号:US08988042

    申请日:1997-12-10

    IPC分类号: G06F1200

    摘要: Optimizing the retrieval of blocks of data from a tape media of a longitudinal serpentine tape drive. A device block map (DBM) is retrieved from the tape media and stored in memory. The DBM comprises a table having one or more rows and one or more columns for each block of data stored on the tape media. The columns are selected from the group comprising a wrap column, a position column, a logical block column, and a file identifier column. One or more retrieval paths for requested blocks of data are determined from an image of the physical layout of the requested blocks on the tape media generated by linear interpolation of the DBM stored in memory. Each of the retrieval paths comprises an ordered sequence of the blocks of data and the manner in which the tape media is to be traversed to accomplish the retrieval of the ordered sequence. A sum of distances is determined for each of the retrieval paths and an optimal one of the retrieval paths is selected based on the determined sum of distances. Thereafter, the blocks of data are retrieved from tape media using the optimal retrieval path.

    摘要翻译: 优化从纵向蛇形磁带驱动器的磁带介质中检索数据块。 从磁带介质检索设备块映射(DBM)并将其存储在存储器中。 DBM包括具有针对存储在磁带介质上的每个数据块具有一个或多个行和一个或多个列的表格。 这些列从包括包装列,位置列,逻辑块列和文件标识符列的组中选择。 根据存储在存储器中的DBM的线性插值产生的磁带上的所请求的块的物理布局的图像来确定所请求的数据块的一个或多个检索路径。 每个检索路径包括数据块的有序序列和磁带介质被遍历的方式以完成有序序列的检索。 对于每个检索路径确定距离之和,并且基于所确定的距离总和来选择最佳的检索路径之一。 此后,使用最佳检索路径从磁带媒体中检索数据块。

    Automated control of a licensed internal code update on a storage controller
    5.
    发明授权
    Automated control of a licensed internal code update on a storage controller 失效
    在存储控制器上自动控制许可的内部代码更新

    公开(公告)号:US07266815B2

    公开(公告)日:2007-09-04

    申请号:US10674300

    申请日:2003-09-29

    IPC分类号: G06F9/44 G06F11/00

    CPC分类号: G06F8/65

    摘要: A system, method and article of manufacture are provided to perform an automated concurrent licensed internal code (LIC) update and an automated nonconcurrent LIC update on a storage controller. The automated concurrent LIC update is performed on a storage controller by sequentially updating each cluster while maintaining operation of the storage controller. The automated concurrent LIC update allows multiple hosts to continue to access data via the storage controller while the system is actively undergoing the LIC update. The automated nonconcurrent LIC update is performed during the time the storage controller in not operating. The automated nonconcurrent LIC update allows service personnel to perform the update in an efficient and timely manner. When the update has completed, the storage controller becomes available to process data and the system is operating at the latest LIC level.

    摘要翻译: 提供了一种系统,方法和制造商品,用于在存储控制器上执行自动并发许可内部代码(LIC)更新和自动化非并发LIC更新。 通过在维护存储控制器的操作的同时依次更新每个簇,在存储控制器上执行自动并发LIC更新。 自动并发LIC更新允许多个主机在系统正在进行LIC更新时通过存储控制器继续访问数据。 自动化非并发LIC更新在存储控制器未运行时执行。 自动化非同期LIC更新允许服务人员以有效和及时的方式执行更新。 更新完成后,存储控制器可用于处理数据,系统以最新的LIC级运行。

    Retrieval of serpentine pattern data using a memory device of a tape cartridge
    6.
    发明授权
    Retrieval of serpentine pattern data using a memory device of a tape cartridge 失效
    使用磁带盒的存储设备检索蛇形图案数据

    公开(公告)号:US06172833B2

    公开(公告)日:2001-01-09

    申请号:US09128737

    申请日:1998-08-05

    IPC分类号: G11B1518

    摘要: A data storage system for use with a tape cartridge storing data in a serpentine pattern on tape media, and having a memory device for storing a device block map for the tape median, comprises tape drive, or a loading mechanism, which first positions the tape cartridge at memory interface for transfering the device block map from the memory device to a processor, and subsequently positions the tape media for reading and/or writing. The processor processes the device block map from the memory device for optimal retrieval of the serpentine pattern data of the tape media. The processing of the device block map occurs while the tape media is positioned for reading and/or writing, so that the processor begins the retrieval reading process immediately upon the positioning of the tape media. In another aspect of the invention, a robotic accessor of an automated data storage library moves the tape cartridge to the tape drive. The tape cartridge is positioned at the memory interface on the robotic accessor, and the stored device block map is transferred from the memory device to the processor, during the move.

    摘要翻译: 一种用于与磁带盒一起使用的数据存储系统,其在磁带介质上存储蛇形图案的数据,并且具有用于存储磁带中位数的设备块图的存储设备,包括磁带驱动器或装载机构,其首先将磁带定位 存储器接口中的盒式磁带,用于将设备块映射从存储器设备传送到处理器,并且随后将磁带介质定位以用于读取和/或写入。 处理器从存储器件处理器件块映射,以最佳地检索带介质的蛇形图案数据。 当磁带介质定位用于读取和/或写入时,发生设备块映射的处理,使得处理器在定位磁带介质时立即开始检索读取过程。 在本发明的另一方面,自动数据存储库的机器人访问器将带盒移动到磁带驱动器。 磁带盒位于机器人存取器上的存储器接口处,并且存储的设备块映射在移动期间从存储器件传送到处理器。

    Multiple volume computer media tape cartridge
    7.
    发明授权
    Multiple volume computer media tape cartridge 有权
    多卷计算机媒体磁带

    公开(公告)号:US6064553A

    公开(公告)日:2000-05-16

    申请号:US356718

    申请日:1999-07-20

    IPC分类号: G11B23/32 G11B23/02

    CPC分类号: G11B23/32

    摘要: A computer media tape cartridge has a multiple volume selector switch with a plurality of positions which allow a user to physically segment the tape into a corresponding number of sections for more efficient use of the tape. By moving the switch to a desired position, the user may select and use the tracks in one or all of the positions on the tape. These positions include an "all position" wherein the tape is a single volume for reading and writing data, and individual positions wherein only the selected position is available for reading or writing data to the tape. Using the cartridge in the latter manner physically segments tape into four separate volumes. The cartridge is used in a tape drive having a plurality of sensors for detecting the position of the switch.

    摘要翻译: 计算机介质带盒具有具有多个位置的多个卷选择器开关,其允许用户将带物理地分割成相应数量的部分,以更有效地使用带。 通过将开关移动到期望的位置,用户可以在磁带上的一个或所有位置中选择和使用轨道。 这些位置包括“全部位置”,其中磁带是用于读取和写入数据的单个卷,以及其中只有所选位置可用于将数据读取或写入磁带的单独位置。 以后一种方式使用墨盒将胶带物理分割成四个独立的卷。 盒式磁带用于具有用于检测开关位置的多个传感器的磁带驱动器中。

    Tape pre-formatting with uniform data storage segments selectively
mapped to fixed or variable sized independently addressable data
storage partitions
    8.
    发明授权
    Tape pre-formatting with uniform data storage segments selectively mapped to fixed or variable sized independently addressable data storage partitions 失效
    磁带预格式化,统一数据存储段选择性地映射到固定或可变大小的独立可寻址数据存储分区

    公开(公告)号:US5969893A

    公开(公告)日:1999-10-19

    申请号:US899042

    申请日:1997-07-23

    摘要: Various data storage formats help to efficiently locate, read, and write user data stored on magnetic tape media. A tape is formatted by writing multiple segment-headers, free from any interleaved access of user data Adjacent segment-headers are spaced by a predetermined interval to define multiple data storage segments. Segment-headers all contain a unique key, which is copied into a key index to identify valid segments. After formatting, normal tape accesses can be performed. Without erasing any old headers or data, a new formatting scheme can be established by writing new segment-headers on the tape. The new segment-headers include a new unique key, replacing the previous key in the key index. Previous segment-headers stored on the tape are ignored, since they lack the updated key. Segments may be selectively grouped to provide independently addressable partitions. Mapping between segments and partitions can use a fixed relationship (e.g. one-to-one), or each partition may be variably sized according to the amount of data to be stored therein. Variable-sized partitions may be automatically padded with a selected number of empty segments. Another feature is flexible-capacity scaling, which distributes an ordered set of device blocks on a multi-track magnetic tape medium. The device blocks are bi-directionally stored in a continuous configuration of multiple adjacent stacked serpentine patterns occupying some or all of the tape. This configuration permits sequential access of all device blocks without advancing the tape medium to skip over regions between adjacent device blocks.

    摘要翻译: 各种数据存储格式有助于有效地定位,读取和写入存储在磁带介质上的用户数据。 通过写入多个分段报头来格式化磁带,没有用户数据的任何交错访问。相邻分段报头间隔预定间隔以定义多个数据存储段。 段头都包含唯一的密钥,它被复制到密钥索引中以标识有效的段。 格式化后,可以执行正常的磁带访问。 在不擦除任何旧标头或数据的情况下,可以通过在磁带上写入新的段头来建立新的格式化方案。 新的分段标题包括一个新的唯一键,替换键索引中的上一个键。 存储在磁带上的前一个段头将被忽略,因为它们缺少更新的密钥。 分段可以被选择性地分组以提供独立的可寻址分区。 段和分区之间的映射可以使用固定关系(例如一对一),或者每个分区可以根据要存储在其中的数据量而变化地大小。 可变大小的分区可以自动填充选定数量的空段。 另一个特征是灵活容量缩放,其在多轨磁带介质上分配一组有序的设备块。 装置块被双向地存储在占据某些或全部磁带的多个相邻堆叠蛇形图案的连续配置中。 该配置允许所有设备块的顺序访问,而不需要使带介质跳过相邻设备块之间的区域。

    Pre-formatting of a storage media having fixed-size partitions
    9.
    发明授权
    Pre-formatting of a storage media having fixed-size partitions 失效
    预先格式化具有固定大小分区的存储介质

    公开(公告)号:US5710676A

    公开(公告)日:1998-01-20

    申请号:US614435

    申请日:1996-03-12

    摘要: A storage media for linear, serpentine recording is pre-formatted for data storage operations by recording partition format information in a single pass along the length of the storage media by recording partition format information for all storage media tracks at regular partition intervals defined by index locations alternately in both storage media directions before moving the storage media to the next partition interval. At each index location, partition markers are recorded in successive parallel tracks first in one media direction and then the other until markers are recorded across the entire width of the storage media. The steps of moving to a next partition index location, recording partition information in successive parallel tracks in first one direction and then the other, and moving to a next index location one partition length away, are repeated until all partitions of the storage media are pre-formatted.

    摘要翻译: 用于线性,蛇形记录的存储介质被预格式化用于数据存储操作,通过沿着存储介质的长度记录分区格式信息,以通过由索引位置定义的规则分区间隔记录所有存储介质轨道的分区格式信息 在将存储介质移动到下一个分区间隔之前,交替地在两个存储介质方向上。 在每个索引位置,分区标记首先在一个媒体方向上记录在连续的平行轨道中,然后另一个记录在记录介质的整个宽度上。 移动到下一个分区索引位置的步骤被重复,直到存储介质的所有分区都被预先存储,然后重复在第一个方向,然后另一个方向上将连续并行的轨道中的分区信息记录下来,并移动到一个分区长度的下一个索引位置 格式化。