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1. 发明授权

US5193184A Deleted data file space release system for a dynamically mapped virtual data storage subsystem 失效
标题翻译：用于动态映射虚拟数据存储子系统的删除数据文件空间释放系统
公开(公告)号：US5193184A
公开(公告)日：1993-03-09
申请号：US540500
申请日：1990-06-18
申请人： Jay S. Belsan , George A. Rudeseal , Charles A. Milligan , Mogens H. Pedersen , John F. Kitchen , Henry S. Ludlam
发明人： Jay S. Belsan , George A. Rudeseal , Charles A. Milligan , Mogens H. Pedersen , John F. Kitchen , Henry S. Ludlam
IPC分类号： G06F3/06
CPC分类号： G06F3/0601 , G06F2003/0697
摘要： The deleted dataset space release system provides facilities in a dynamically mapped virtual memory data storage subsystem to immediately release the physical space occupied by a deleted dataset for use by the data storage subsystem to store subsequently received data files. This system also provides data security by preventing the unauthorized access to the data of scratched data files, both in cache memory and on the data storage devices. The deleted dataset space release system utilizes a user exit in the host processor data file scratch routine to transmit information to the data storage subsystem indicative of the host processor data file scratch activity. Existing channel command words are used in a manner that is transparent to the host processor. The data storage subsystem thereby immediately receives an indication that the host processor is scratching a data file from the volume table of contents of a virtual volume. The data storage subsystem can then concurrently scratch this data file from the virtual track directory contained in the data storage subsystem and thereby release the physical storage space occupied by this scratched data file.
摘要翻译：删除的数据集空间释放系统在动态映射的虚拟存储器数据存储子系统中提供设施，以立即释放被删除的数据集占用的物理空间，供数据存储子系统存储以便随后接收的数据文件。该系统还通过防止对高速缓存和数据存储设备中的划痕数据文件的数据的未经授权的访问来提供数据安全性。删除的数据集空间释放系统利用主处理器数据文件暂存例程中的用户出口将信息发送到指示主处理器数据文件划痕活动的数据存储子系统。现有的通道命令字以对主机处理器透明的方式使用。因此，数据存储子系统立即接收主机处理器从虚拟卷的内容的卷表中抓取数据文件的指示。然后，数据存储子系统可以同时从包含在数据存储子系统中的虚拟轨道目录中划破该数据文件，从而释放该划痕数据文件占用的物理存储空间。

2. 发明授权

US5239659A Phantom duplex copy group apparatus for a disk drive array data storge subsystem 失效
标题翻译：用于磁盘驱动器阵列数据存储子系统的PHANTOM DUPLEX COPY GROUP
公开(公告)号：US5239659A
公开(公告)日：1993-08-24
申请号：US717820
申请日：1991-06-19
申请人： George A. Rudeseal , Henry S. Ludlam , Jay S. Belsan
发明人： George A. Rudeseal , Henry S. Ludlam , Jay S. Belsan
IPC分类号： G06F3/06 , G06F11/00 , G06F11/10 , G06F11/20 , G11B20/18 , G11C29/00
CPC分类号： G06F11/1076 , G06F11/1008 , G06F3/0601 , G11B20/1833 , G11C29/74 , G11C29/88 , G06F11/2005 , G06F11/2087 , G06F11/2094 , G06F2003/0692 , G06F2201/815
摘要： This apparatus makes use of a disk drive array to store data records for an associated host processor. This disk drive array emulates the operation of a large form factor disk drive by using a plurality of interconnected small form factor disk drives. These small form factor disk drives are configured into redundancy groups, each of which contains n+m disk drives for storing data records and redundancy information thereon. The use of this configuration is significantly more reliable than a large form factor disk drive. However, in order to maintain compatibility with host processors that request the duplex copy group feature, the phantom duplex copy group apparatus of the present invention mimics the creation of a duplex copy group in this dynamically mapped data storage subsystem using a disk array and a phantom set of pointers that mimic the data storage devices on which the data records are stored.
摘要翻译：该装置利用磁盘驱动器阵列来存储关联的主机处理器的数据记录。该磁盘驱动器阵列通过使用多个互连的小型磁盘驱动器来模拟大型磁盘驱动器的操作。这些小尺寸磁盘驱动器被配置为冗余组，每个冗余组包含n + m个磁盘驱动器，用于存储数据记录和冗余信息。使用这种配置比大型磁盘驱动器显着更可靠。然而，为了保持与请求双工复制组特征的主机处理器的兼容性，本发明的虚拟双工复制组装置使用磁盘阵列和幻影模拟在该动态映射的数据存储子系统中创建双工复制组一组模拟存储数据记录的数据存储设备的指针。

3. 发明授权

US5155845A Data storage system for providing redundant copies of data on different disk drives 失效
标题翻译：用于在不同磁盘驱动器上提供数据冗余副本的数据存储系统
公开(公告)号：US5155845A
公开(公告)日：1992-10-13
申请号：US538911
申请日：1990-06-15
申请人： David G. Beal , Fred C. Eifert , Henry S. Ludlam , Charles A. Milligan , George A. Rudeseal , Paul R. Swiatek
发明人： David G. Beal , Fred C. Eifert , Henry S. Ludlam , Charles A. Milligan , George A. Rudeseal , Paul R. Swiatek
IPC分类号： G06F11/14 , G06F11/20 , G11C29/00
CPC分类号： G06F11/2071 , G06F11/2058 , G06F11/2089 , G06F11/2094 , G11C29/74 , G06F11/1402 , G06F11/2074 , G06F11/2079
摘要： A disk storage system that writes multiple copies of records directed to user-specified volumes. A plurality of spaced apart control units interconnected by direct data links and a corresponding plurality of sets of recording means communicate over the direct data links when a write request is received by one control unit to cause one volume in each set of recording means to write a copy of the received record.
摘要翻译：写入指向用户指定卷的多个记录副本的磁盘存储系统。通过直接数据链路和对应的多组记录装置互连的多个间隔开的控制单元在一个控制单元接收到写入请求时，通过直接数据链路通信，以使每组记录装置中的一个音量写入收到的记录副本。

4. 发明授权

US5371882A Spare disk drive replacement scheduling system for a disk drive array data storage subsystem 失效
标题翻译：磁盘驱动器阵列数据存储子系统的备用磁盘驱动器更换调度系统
公开(公告)号：US5371882A
公开(公告)日：1994-12-06
申请号：US820274
申请日：1992-01-14
申请人： Henry S. Ludlam
发明人： Henry S. Ludlam
IPC分类号： G06F11/20 , G11B20/18 , G11C29/00 , G06F11/00
CPC分类号： G06F11/2094 , G11B20/1833 , G11C29/88
摘要： A disk drive array data storage subsystem maps between virtual and physical data storage devices and schedules the writing of data to these devices. The data storage subsystem functions as a conventional large form factor disk drive memory, using a plurality of redundancy groups, each containing n+m disk drives. The use of a pool of r shared spare disk drives in this system is enhanced by apparatus which predicts the exhaustion of the pool of spare disk drives and automatically reorders additional disk drives to replace failed disk drives in the data storage subsystem. The spare disk drive replacement scheduling system records disk drive failure data and extrapolates past failure events to a target date at which the pool of spare disk drives will be exhausted. This exhaustion date is then modified by a reorder and restocking time interval indicative of the time it takes for a repairperson to be dispatched to replace the failed disk drives and replenish the pool of shared spare disk drives. This calculated order date is then used to initiate a preventative maintenance visit by the repairperson to replace the failed disk drives before the pool of spare disk drives is exhausted.
摘要翻译：磁盘驱动器阵列数据存储子系统映射虚拟和物理数据存储设备之间，并且将数据写入这些设备。数据存储子系统作为传统的大尺寸磁盘驱动器存储器，使用多个冗余组，每个冗余组包含n + m个磁盘驱动器。在该系统中使用r个共享备用磁盘驱动器池的装置通过预测备用磁盘驱动器池的耗尽并自动重新排序附加磁盘驱动器来替换数据存储子系统中的故障磁盘驱动器的装置来增强。备用磁盘驱动器更换计划系统记录磁盘驱动器故障数据，并将过去的故障事件推断到备用磁盘驱动器池将耗尽的目标日期。然后通过重新排序和重新储存时间间隔来修改耗尽日期，指示修理人员被派遣以替换故障磁盘驱动器并补充共享备用磁盘驱动器池所花费的时间。然后，此计算的订单日期用于在备用磁盘驱动器池用尽之前启动维修人员进行预防性维护访问以更换故障磁盘驱动器。

5. 发明授权

US5459857A Fault tolerant disk array data storage subsystem 失效
标题翻译：容错磁盘阵列数据存储子系统
公开(公告)号：US5459857A
公开(公告)日：1995-10-17
申请号：US312668
申请日：1994-09-27
申请人： Henry S. Ludlam , Charles A. Milligan , George A. Rudeseal , Paul R. Swiatek
发明人： Henry S. Ludlam , Charles A. Milligan , George A. Rudeseal , Paul R. Swiatek
IPC分类号： G06F11/20 , G11C29/00 , G06F11/00
CPC分类号： G06F11/2071 , G06F11/2092 , G11C29/74 , G06F11/2064 , G06F11/2076 , G06F11/2094
摘要： A pair of operationally independent disk drive array data storage subsystems are used to emulate one or more physical devices shared between two control modules. The storage control units of the two data storage subsystems are interconnected by at least one data link to exchange control and data signals therebetween. The storage control units of both data storage subsystems are synchronized to maintain identical virtual device images of certain assigned virtual devices both of the data storage subsystems wherein the duplicated data records of the single virtual device are stored. The data records are therefore stored in available memory on both of the two data storage subsystems. Data is exchanged over the data link to maintain consistency of the two sets of mapping tables.
摘要翻译：一对操作上独立的磁盘驱动器阵列数据存储子系统用于模拟两个控制模块之间共享的一个或多个物理设备。两个数据存储子系统的存储控制单元通过至少一个数据链路相互连接，以交换其间的控制和数据信号。两个数据存储子系统的存储控制单元被同步以维持特定分配的虚拟设备的相同的虚拟设备图像，其中存储单个虚拟设备的复制数据记录的数据存储子系统。因此，数据记录存储在两个数据存储子系统的可用存储器中。通过数据链路交换数据，以保持两组映射表的一致性。

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