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1. 发明申请

US20040010661A1 Disk array device with selectable method for generating redundant data 失效
标题翻译：磁盘阵列设备，可选择生成冗余数据的方法
公开(公告)号：US20040010661A1
公开(公告)日：2004-01-15
申请号：US10601892
申请日：2003-06-24
申请人： Hitachi, Ltd.
发明人： Eiju Katsuragi , Mikito Ogata , Akira Kurano , Toshihiko Tamiya , Akira Yamamoto , Naoya Takahashi
IPC分类号： G06F012/16
CPC分类号： G06F11/1076 , G06F2211/1054 , G06F2211/1066
摘要： A disk array device selects a redundant generation method for reducing the overhead and improving the reliability associated with generating redundant data. The disk array device includes a disk controller connected to and controlling an array of disk drives. The disk controller includes a redundant data generator, a difference data generator, and a redundant data generation method selector. The redundant data generator is able to generate redundant data via a read and modify method and an all stripes method. The disk array device selects a method of generating redundant data from a method of read and modify and all stripes, and a method of generation in a drive and a method of difference, both of which are executed to generate redundant data on a disk drive. The disk array device selects the method of generating redundant data that will minimize the time required to process, transfer and store both the received host data and the generated redundant data based on the length of write data received from the host, an access pattern specified by the host, by the current load state of the disk drives, and by the existence of a failure state in a disk drive. Divided write data and previous data to be updated may be transferred depending on the write data length.
摘要翻译：磁盘阵列设备选择用于减少开销并提高与生成冗余数据相关联的可靠性的冗余生成方法。磁盘阵列设备包括连接到并控制磁盘驱动器阵列的磁盘控制器。磁盘控制器包括冗余数据生成器，差分数据生成器和冗余数据生成方法选择器。冗余数据生成器能够通过读取和修改方法和全部条纹方法生成冗余数据。磁盘阵列装置从读取和修改的方法以及所有条带中选择产生冗余数据的方法，以及在驱动器中产生的方法和差异方法，这两者都被执行以在盘驱动器上生成冗余数据。磁盘阵列设备选择产生冗余数据的方法，该冗余数据将根据从主机接收到的写入数据的长度来最小化处理，传送和存储接收到的主机数据和生成的冗余数据所需的时间，由主机，磁盘驱动器的当前负载状态，以及磁盘驱动器中是否存在故障状态。可以根据写入数据长度传送分割的写入数据和要更新的先前数据。

2. 发明申请

US20010032294A1 Disk array device with selectable method for generating redundant data 有权
标题翻译：磁盘阵列设备，可选择生成冗余数据的方法
公开(公告)号：US20010032294A1
公开(公告)日：2001-10-18
申请号：US09883179
申请日：2001-06-19
申请人： HITACHI, LTD.
发明人： Eiju Katsuragi , Mikito Ogata , Akira Kurano , Toshihiko Tamiya , Akira Yamamoto , Naoya Takahashi
IPC分类号： G06F012/00
CPC分类号： G06F11/1076 , G06F2211/1054 , G06F2211/1066
摘要： A disk array device selects a redundant generation method for reducing the overhead and improving the reliability associated with generating redundant data. The disk array device includes a disk controller connected to and controlling an array of disk drives. The disk controller includes a redundant data generator, a difference data generator, and a redundant data generation method selector. The redundant data generator is able to generate redundant data via a read and modify method and an all stripes method. The disk array device selects a method of generating redundant data from a method of read and modify and all stripes, and a method of generation in a drive and a method of difference, both of which are executed to generate redundant data on a disk drive. The disk array device selects the method of generating redundant data that will minimize the time required to process, transfer and store both the received host data and the generated redundant data based on the length of write data received from the host, an access pattern specified by the host, by the current load state of the disk drives, and by the existence of a failure state in a disk drive. Divided write data and previous data to be updated may be transferred depending on the write data length.
摘要翻译：磁盘阵列设备选择用于减少开销并提高与生成冗余数据相关联的可靠性的冗余生成方法。磁盘阵列设备包括连接到并控制磁盘驱动器阵列的磁盘控制器。磁盘控制器包括冗余数据生成器，差分数据生成器和冗余数据生成方法选择器。冗余数据生成器能够通过读取和修改方法和全部条纹方法生成冗余数据。磁盘阵列装置从读取和修改的方法以及所有条带中选择产生冗余数据的方法，以及在驱动器中产生的方法和差异方法，这两者都被执行以在盘驱动器上生成冗余数据。磁盘阵列设备选择产生冗余数据的方法，该冗余数据将根据从主机接收到的写入数据的长度来最小化处理，传送和存储接收到的主机数据和生成的冗余数据所需的时间，由主机，磁盘驱动器的当前负载状态，以及磁盘驱动器中是否存在故障状态。可以根据写入数据长度传送分割的写入数据和要更新的先前数据。

3. 发明申请

US20020184443A1 Disk array device with selectable method for generating redundant data 失效
标题翻译：磁盘阵列设备，可选择生成冗余数据的方法
公开(公告)号：US20020184443A1
公开(公告)日：2002-12-05
申请号：US10196293
申请日：2002-07-17
申请人： HITACHI, LTD.
发明人： Eiju Katsuragi , Mikito Ogata , Akira Kurano , Toshihiko Tamiya , Akira Yamamoto , Naoya Takahashi
IPC分类号： G06F012/16
CPC分类号： G06F11/1076 , G06F2211/1054 , G06F2211/1066
摘要： A disk array device selects a redundant generation method for reducing the overhead and improving the reliability associated with generating redundant data. The disk array device includes a disk controller connected to and controlling an array of disk drives. The disk controller includes a redundant data generator, a difference data generator, and a redundant data generation method selector. The redundant data generator is able to generate redundant data via a read and modify method and an all stripes method. The disk array device selects a method of generating redundant data from a method of read and modify and all stripes, and a method of generation in a drive and a method of difference, both of which are executed to generate redundant data on a disk drive. The disk array device selects the method of generating redundant data that will minimize the time required to process, transfer and store both the received host data and the generated redundant data based on the length of write data received from the host, an access pattern specified by the host, by the current load state of the disk drives, and by the existence of a failure state in a disk drive. Divided write data and previous data to be updated may be transferred depending on the write data length.
摘要翻译：磁盘阵列设备选择用于减少开销并提高与生成冗余数据相关联的可靠性的冗余生成方法。磁盘阵列设备包括连接到并控制磁盘驱动器阵列的磁盘控制器。磁盘控制器包括冗余数据生成器，差分数据生成器和冗余数据生成方法选择器。冗余数据生成器能够通过读取和修改方法和全部条纹方法生成冗余数据。磁盘阵列装置从读取和修改的方法以及所有条带中选择产生冗余数据的方法，以及在驱动器中产生的方法和差异方法，这两者都被执行以在盘驱动器上生成冗余数据。磁盘阵列设备选择产生冗余数据的方法，该冗余数据将根据从主机接收到的写入数据的长度来最小化处理，传送和存储接收到的主机数据和生成的冗余数据所需的时间，由主机，磁盘驱动器的当前负载状态，以及磁盘驱动器中是否存在故障状态。可以根据写入数据长度传送分割的写入数据和要更新的先前数据。

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