专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US5535372A Method and apparatus for efficient updating of CKD data stored on fixed block architecture devices 失效
标题翻译：用于有效更新存储在固定块体系结构设备上的CKD数据的方法和装置
公开(公告)号：US5535372A
公开(公告)日：1996-07-09
申请号：US271335
申请日：1994-07-06
申请人： Michael T. Benhase , David A. Burton , John N. McCauley, Jr. , Robert L. Morton
发明人： Michael T. Benhase , David A. Burton , John N. McCauley, Jr. , Robert L. Morton
IPC分类号： G06F3/06 , G11B5/09
CPC分类号： G06F3/0613 , G06F3/064 , G06F3/0674
摘要： A method and apparatus for updating CKD data stored on fixed block media, and more particularly to creating Track Format Descriptors which are data structures loaded into electronic memory to enable fast writing of data without loading an entire CKD emulated track of data into memory. A control unit is provided with logic to provide Track Format Descriptors which describe the format of the track without the need for the data content of the track to be resident in cache, or electronic memory. An emulated CKD volume corresponds to a volume of data stored on a multi-disk device. Each track on a volume is represented by a Track Format Descriptor. The Track Format Descriptor forms a representation of the format according to the following general procedure. If the format is a predefined format, in other words one that is already known by the control unit then a track form descriptor is formed to represent the format. If the format is easily discernible, it is said to be "well behaved". "Well behaved" formats are ones in which either each record has the same field length, there is no key field, or record numbers start at one and increment by one. A Track Format Descriptor is formed by predicting the format of these so called "well behaved" formats. If the format is not "well behaved" and the format has not been predefined, then the entire data track must be loaded into cache memory, before a fast write operation is performed. The Track Format Descriptor serves as an index to other information data structures which are loaded into memory when required by logic in the control unit.
摘要翻译：一种用于更新存储在固定块介质上的CKD数据的方法和装置，更具体地说，涉及创建作为加载到电子存储器中的数据结构的轨道格式描述符，以便能够快速写入数据，而无需将整个CKD仿真数据轨迹加载到存储器中。控制单元被提供有逻辑以提供描述轨道格式的轨道格式描述符，而不需要轨道的数据内容驻留在高速缓存或电子存储器中。仿真的CKD卷对应于存储在多盘设备上的数据量。卷上的每个曲目由轨道格式描述符表示。轨道格式描述符根据以下一般程序形成格式的表示。如果格式是预定义的格式，换句话说是由控制单元已知的格式，则形成轨迹形式描述符来表示格式。如果格式很容易识别，那么它被称为“表现良好”。 “行为良好”的格式是每个记录具有相同的字段长度，没有键字段，或记录号从一个开始并递增一个。轨道格式描述符是通过预测所谓的“良好行为”格式的格式形成的。如果格式不是“良好的行为”，并且格式尚未预定义，则在执行快速写入操作之前，必须将整个数据轨道加载到高速缓存中。轨道格式描述符用作其他信息数据结构的索引，其在控制单元中的逻辑需要时被加载到存储器中。

2. 发明授权

US5379398A Method and system for concurrent access during backup copying of data 失效
标题翻译：在备份数据复制期间并发访问的方法和系统
公开(公告)号：US5379398A
公开(公告)日：1995-01-03
申请号：US871247
申请日：1992-04-20
申请人： Oded Cohn , Michael H. Hartung , John N. McCauley, Jr. , William F. Micka , Claus W. Mikkelsen , Kenneth M. Nagin , Yoram Novick , Alexander Winokur
发明人： Oded Cohn , Michael H. Hartung , John N. McCauley, Jr. , William F. Micka , Claus W. Mikkelsen , Kenneth M. Nagin , Yoram Novick , Alexander Winokur
IPC分类号： G06F12/00 , G06F11/14 , G06F12/02 , G06F12/16
CPC分类号： G06F11/1466
摘要： A method and system are disclosed for permitting high concurrency of access during backup copying of designated data stored within a storage subsystem which includes multiple storage devices coupled to the data processing system via a storage subsystem control unit having subsystem memory therein. Data within each storage device is accessed utilizing a Unique Control Block (UCB), which identifies a selected storage device, and an associated data retrieval command sequence which identifies the data to be accessed. Portions of the data copied to subsystem memory within the subsystem storage control unit as sidefiles from a first storage device may be accessed utilizing a Unique Control Block (UCB) associated with an alternate storage device by associating a selected data retrieval command sequence therewith which identifies the data as stored within the subsystem memory. In this manner, data from a first storage device may be accessed utilizing an alternate Unique Control Block (UCB), permitting concurrent access of data utilizing the Unique Control Block (UCB) associated with the first storage device.
摘要翻译：公开了一种方法和系统，用于在备份复制存储在存储子系统内的指定数据的同时进行访问的高并发性，该存储子系统包括经由其中具有子系统存储器的存储子系统控制单元耦合到数据处理系统的多个存储设备。使用识别所选存储设备的唯一控制块（UCB）和识别要访问的数据的相关联的数据检索命令序列来访问每个存储设备内的数据。可以利用与替代存储设备相关联的唯一控制块（UCB）来访问从子系统存储控制单元中复制到子系统存储控制单元中的子系统存储器的部分作为来自第一存储设备的副文件，通过将所选择的数据检索命令序列与其相关联来识别标识存储在子系统存储器中的数据。以这种方式，可以使用替代的唯一控制块（UCB）来访问来自第一存储设备的数据，允许使用与第一存储设备相关联的唯一控制块（UCB）并行访问数据。

3. 发明授权

US5241669A Method and system for sidefile status polling in a time zero backup copy process 失效
标题翻译：在时间零备份复制过程中进行侧文件状态轮询的方法和系统
公开(公告)号：US5241669A
公开(公告)日：1993-08-31
申请号：US871786
申请日：1992-04-20
申请人： Oded Cohn , Michael H. Hartung , William F. Micka , John N. McCauley, Jr. , Claus W. Mikkelsen , Kenneth M. Nagin
发明人： Oded Cohn , Michael H. Hartung , William F. Micka , John N. McCauley, Jr. , Claus W. Mikkelsen , Kenneth M. Nagin
IPC分类号： G06F3/06 , G06F11/00 , G06F11/14 , G06F12/00 , G06F12/16
CPC分类号： G06F11/1466 , G06F11/1458 , G06F11/1461 , G06F11/1469
摘要： A method and system are disclosed for enhanced efficiency of backup copying of designated datasets stored within a plurality of storage devices coupled to the data processing system via a storage subsystem control unit having subsystem memory therein. Application execution within the data processing system is temporarily suspended long enough to form a dataset logical-to-physical system address concordance to be utilized to administer copying of the designated dataset. Thereafter, application initiated updates to uncopied portions of the designated datasets are temporarily deferred until sidefiles of the affected portions of the designated datasets are written to subsystem memory. The updates are then written to the storage subsystem. Portions of the designated datasets are then accessed and copied from the storage subsystem on a scheduled or opportunistic basis utilizing selected data retrieval command sequences. A sidefile status query is appended to selected data retrieval command sequences and the presence of data within the subsystem memory is determined without the necessity of additional communications between the data processing system and the storage subsystem. The sidefiles are then accessed and copied. Copied portions of the designated datasets and sidefiles are then copied to alternate storage locations in a backup copy order defined by the address concordance.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式