公开(公告)号：US07127633B1

公开(公告)日：2006-10-24

申请号：US10184058

申请日：2002-06-28

Applicant: Mark David Olson ,  Michael Henry Pittelkow

Inventor： Mark David Olson ,  Michael Henry Pittelkow

IPC: G06F11/00

CPC classification number: G06F11/2092

Abstract: A fiber channel storage area network (SAN) provides virtualized storage space for a number of servers to a number of virtual disks implemented on various virtual redundant array of inexpensive disks (RAID) devices striped across a plurality of physical disk drives. The SAN includes plural controllers and communication paths to allow for fail-safe and fail-over operation. The plural controllers can be loosely-coupled to provide n-way redundancy and have more than one independent channel for communicating with one another. In the event of a failure involving a controller or controller interface, the virtual disks that are accessed via the affected interfaces are re-mapped to another interface in order to continue to provide high data availability. In particular, those targets, or virtual disks, which are owned by a failed device (e.g., interface or controller) are identified and their ownership information within the SAN configuration tables is revised to reflect one or more alternative devices which act as back-up devices.

Abstract translation: 光纤通道存储区域网络（SAN）向许多虚拟磁盘提供多个服务器的虚拟存储空间，这些虚拟磁盘在多个物理磁盘驱动器上划分的廉价磁盘（RAID）设备的各种虚拟冗余阵列上实现。 SAN包括多个控制器和通信路径，以允许故障安全和故障切换操作。 多个控制器可以松耦合以提供n路冗余并且具有多于一个用于彼此通信的独立信道。 在涉及控制器或控制器接口的故障中，通过受影响的接口访问的虚拟磁盘将重新映射到另一个接口，以便继续提供高数据可用性。 特别地，识别由故障设备（例如，接口或控制器）拥有的那些目标或虚拟磁盘，并且修改其在SAN配置表内的所有权信息以反映用作备份的一个或多个备选设备 设备。

公开(公告)号：US07043663B1

公开(公告)日：2006-05-09

申请号：US10184059

申请日：2002-06-28

Applicant: Michael Henry Pittelkow ,  Mark David Olson

Inventor： Michael Henry Pittelkow ,  Mark David Olson

IPC: G06F11/00

CPC classification number: G06F11/2092

Abstract: A fiber channel storage area network (SAN) provides virtualized storage space for a number of servers to a number of virtual disks implemented on various virtual redundant array of inexpensive disks (RAID) devices striped across a plurality of physical disk drives. The SAN includes plural controllers and communication paths to allow for fail-safe and fail-over operation. The plural controllers can be loosely-coupled to provide n-way redundancy and have more than one independent channel for communicating with one another. In the event of a failure involving a controller or controller interface, the virtual disks that are accessed via the affected interfaces are re-mapped to another interface in order to continue to provide high data availability. In particular, deadman timers, heartbeat signals internal to each controller, and heartbeat signals between different controllers are used to detect controllers that are no longer communicating with other controllers in order to identify those controllers which are failing or have failed.

Abstract translation: 光纤通道存储区域网络（SAN）向许多虚拟磁盘提供多个服务器的虚拟存储空间，这些虚拟磁盘在多个物理磁盘驱动器上划分的廉价磁盘（RAID）设备的各种虚拟冗余阵列上实现。 SAN包括多个控制器和通信路径，以允许故障安全和故障切换操作。 多个控制器可以松耦合以提供n路冗余并且具有多于一个用于彼此通信的独立信道。 在涉及控制器或控制器接口的故障中，通过受影响的接口访问的虚拟磁盘将重新映射到另一个接口，以便继续提供高数据可用性。 特别地，用于每个控制器内部的死亡计时器，心跳信号和不同控制器之间的心跳信号用于检测不再与其他控制器通信的控制器，以便识别那些失败或失败的控制器。

公开(公告)号：US06996741B1

公开(公告)日：2006-02-07

申请号：US10183946

申请日：2002-06-28

Applicant: Michael Henry Pittelkow ,  Mark David Olson

Inventor： Michael Henry Pittelkow ,  Mark David Olson

IPC: G06F11/00

CPC classification number: G06F11/2092

Abstract: A fibre channel storage area network (SAN) provides virtualized storage space for a number of servers to a number of virtual disks implemented on various virtual redundant array of inexpensive disks (RAID) devices striped across a plurality of physical disk drives. The SAN includes plural controllers and communication paths to allow for fail-safe and fail-over operation. The plural controllers can be loosely-coupled to provide n-way redundancy and have more than one independent channel for communicating with one another. In the event of a failure involving a controller or controller interface, the virtual disks that are accessed via the affected interfaces are re-mapped to another interface in order to continue to provide high data availability.

Abstract translation: 光纤通道存储区域网络（SAN）向许多虚拟磁盘提供多个服务器的虚拟存储空间，这些虚拟磁盘在多个物理磁盘驱动器上划分的廉价磁盘（RAID）设备的各种虚拟冗余阵列上实现。 SAN包括多个控制器和通信路径，以允许故障安全和故障切换操作。 多个控制器可以松耦合以提供n路冗余并且具有多于一个用于彼此通信的独立信道。 在涉及控制器或控制器接口的故障中，通过受影响的接口访问的虚拟磁盘将重新映射到另一个接口，以便继续提供高数据可用性。

公开(公告)号：US06883065B1

公开(公告)日：2005-04-19

申请号：US10183979

申请日：2002-06-28

Applicant: Michael Henry Pittelkow ,  Mark David Olson

Inventor： Michael Henry Pittelkow ,  Mark David Olson

IPC: G06F3/06 ,  G06F11/00 ,  G06F11/07 ,  G06F12/00 ,  G06F12/08

CPC classification number: G06F11/2092 ,  G06F3/0601 ,  G06F11/0727 ,  G06F11/0757 ,  G06F11/0784 ,  G06F11/201 ,  G06F12/0866 ,  G06F2003/0697

Abstract: A fiber channel storage area network (SAN) provides virtualized storage space for a number of servers to a number of virtual disks implemented on various virtual redundant array of inexpensive disks (RAID) devices striped across a plurality of physical disk drives. The SAN includes plural controllers and communication paths to allow for fail-safe and fail-over operation. The plural controllers can be loosely-coupled to provide n-way redundancy and have more than one independent channel for communicating with one another. In particular, respective portions from each of the back-end physical disk drives within the SAN are used as one of these alternative communication channels to pass messages between controllers. Such an alternative communications channel provides even further redundancy and robustness in the system.

Abstract translation: 光纤通道存储区域网络（SAN）向许多虚拟磁盘提供多个服务器的虚拟存储空间，这些虚拟磁盘在多个物理磁盘驱动器上划分的廉价磁盘（RAID）设备的各种虚拟冗余阵列上实现。 SAN包括多个控制器和通信路径，以允许故障安全和故障切换操作。 多个控制器可以松耦合以提供n路冗余并且具有多于一个用于彼此通信的独立信道。 特别地，SAN中的每个后端物理磁盘驱动器的相应部分被用作这些替代通信信道之一以在控制器之间传递消息。 这种替代的通信信道在系统中提供了甚至更多的冗余和鲁棒性。

公开(公告)号：US07069468B1

公开(公告)日：2006-06-27

申请号：US10183949

申请日：2002-06-28

Applicant: Mark David Olson ,  Michael Henry Pittelkow

Inventor： Mark David Olson ,  Michael Henry Pittelkow

IPC: G06F11/00

CPC classification number: G06F11/2092

Abstract: A fiber channel storage area network (SAN) provides virtualized storage space for a number of servers to a number of virtual disks implemented on various virtual redundant array of inexpensive disks (RAID) devices striped across a plurality of physical disk drives. The SAN includes plural controllers and communication paths to allow for fail-safe and fail-over operation. The plural controllers can be loosely-coupled to provide n-way redundancy and more than one independent channel for communicating with one another. In the event of a failure involving a controller or controller interface, the virtual disks that are accessed via the affected interfaces are re-mapped to another interface in order to continue to provide high data availability. In particular a resource re-allocation routine operating on one of the controllers employs predetermined criteria against a family of potential back-up controllers in order to select appropriate back-up controllers for a particular device that fails. The criteria, for example, can include an explicit primary/secondary table to control selecting a secondary controller for any primary controller or be more complex so as to consider such statistics as data transfer loads among the interfaces, data transfer loads among the controllers, or the number of targets assigned to each interfaces.

Abstract translation: 光纤通道存储区域网络（SAN）向许多虚拟磁盘提供多个服务器的虚拟存储空间，这些虚拟磁盘在多个物理磁盘驱动器上划分的廉价磁盘（RAID）设备的各种虚拟冗余阵列上实现。 SAN包括多个控制器和通信路径，以允许故障安全和故障切换操作。 多个控制器可以松散耦合以提供n路冗余和多于一个用于彼此通信的独立信道。 在涉及控制器或控制器接口的故障中，通过受影响的接口访问的虚拟磁盘将重新映射到另一个接口，以便继续提供高数据可用性。 特别地，在一个控制器上操作的资源重新分配程序针对一组潜在的后备控制器采用预定准则，以便为失败的特定设备选择适当的备份控制器。 例如，标准可以包括显式的主/次表以控制为任何主控制器选择辅助控制器或者更复杂，以便考虑诸如接口之间的数据传输负载，控制器之间的数据传输负载或者控制器之间的数据传输负载 分配给每个接口的目标数。

公开(公告)号：US09087009B2

公开(公告)日：2015-07-21

申请号：US13550152

申请日：2012-07-16

Applicant: Michael H. Pittelko ,  Mark David Olson

Inventor： Michael H. Pittelko ,  Mark David Olson

IPC: G06F12/00 ,  G06F11/14 ,  G06F11/20

CPC classification number: G06F3/0619 ,  G06F3/0665 ,  G06F3/0689 ,  G06F11/1451 ,  G06F11/1456 ,  G06F11/1464 ,  G06F11/2071 ,  G06F11/2074 ,  G06F2003/0692 ,  G06F2201/84

Abstract: A method of data replication from a first data storage device to a second data storage device. The method may include generating, at the first data storage device, at spaced time intervals, a plurality of snapshots for a logical data volume of the first data storage device, the logical data volume being an abstraction of data blocks from one or more physical storage devices, each snapshot identifying changes of data for at least a portion of the logical data volume since a most previous snapshot. Also at the first data storage device, the method includes generating a delta volume, the delta volume indicating changes in the data of at least a portion of the logical data volume between two non-consecutive snapshots. The method further involves replicating the delta volume to the second data storage device, and replicating the changes to the data indicated therein at the second data storage device.

Abstract translation: 一种从第一数据存储设备到第二数据存储设备的数据复制的方法。 该方法可以包括在第一数据存储设备处以间隔的时间间隔生成用于第一数据存储设备的逻辑数据卷的多个快照，该逻辑数据卷是从一个或多个物理存储器抽取数据块 设备，每个快照识别自从最先前的快照以来的逻辑数据卷的至少一部分的数据的改变。 此外，在第一数据存储设备中，该方法包括生成增量卷，该增量体积指示两个非连续快照之间的逻辑数据卷的至少一部分的数据的变化。 该方法还包括将增量体积复制到第二数据存储设备，并且在第二数据存储设备上复制对其中指示的数据的改变。

公开(公告)号：US09009431B2

公开(公告)日：2015-04-14

申请号：US13482183

申请日：2012-05-29

Applicant: Michael H. Pittelko ,  Mark David Olson

Inventor： Michael H. Pittelko ,  Mark David Olson

IPC: G06F12/00 ,  G06F11/14 ,  G06F3/06

CPC classification number: G06F11/1451 ,  G06F3/0619 ,  G06F3/065 ,  G06F3/0665 ,  G06F3/0689 ,  G06F11/1464 ,  G06F2201/84

Abstract: The present disclosure relates generally to a method and system for creating, replicating, and providing access to virtual snapshots of a disk storage block of a disk storage system or subsystem. In one embodiment, the present disclosure relates to a virtual snapshot accessible to local users of a local data storage device. The virtual snapshot may direct local users to a snapshot stored on computer-readable storage medium at a remote data storage site, but give the appearance as if data of the corresponding snapshot is stored locally. The virtual snapshot is replaced by replication of the snapshot from the remote data storage site to the local data storage device. Each snapshot may relate to data of a logical data volume, the logical data volume being an abstraction of data blocks from one or more physical storage devices.

Abstract translation: 本公开一般涉及用于创建，复制和提供对磁盘存储系统或子系统的磁盘存储块的虚拟快照的访问的方法和系统。 在一个实施例中，本公开涉及本地数据存储设备的本地用户可访问的虚拟快照。 虚拟快照可以将本地用户指向存储在远程数据存储站点上的计算机可读存储介质上的快照，但是如同在本地存储对应快照的数据那样给出外观。 虚拟快照由快照从远程数据存储站点复制到本地数据存储设备来代替。 每个快照可以涉及逻辑数据卷的数据，逻辑数据卷是来自一个或多个物理存储设备的数据块的抽象。

公开(公告)号：US07003688B1

公开(公告)日：2006-02-21

申请号：US10183967

申请日：2002-06-28

Applicant: Michael Henry Pittelkow ,  Mark David Olson

Inventor： Michael Henry Pittelkow ,  Mark David Olson

IPC: G06F11/00

CPC classification number: G06F11/2092 ,  G06F11/1666 ,  G06F11/2007 ,  G06F11/2089

Abstract: A fibre channel storage area network (SAN) provides virtualized storage space for a number of servers to a number of virtual disks implemented on various virtual redundant array of inexpensive disks (RAID) devices striped across a plurality of physical disk drives. The SAN includes plural controllers and communication paths to allow for fail-safe and fail-over operation. The plural controllers can be loosely-coupled to provide n-way redundancy and have more than one independent channel for communicating with one another. In the event of a failure involving a controller or controller interface, the virtual disks that are accessed via the affected interfaces are re-mapped to another interface in order to continue to provide high data availability. In particular, a common memory storage device is connected to the back-ends of every controller to provide a storage area. In this manner, the common memory storage device can be accessed via operations similar to those a controller already uses to presently access the physical disks which are connected to the back-end of the controllers.

Abstract translation: 光纤通道存储区域网络（SAN）向许多虚拟磁盘提供多个服务器的虚拟存储空间，这些虚拟磁盘在多个物理磁盘驱动器上划分的廉价磁盘（RAID）设备的各种虚拟冗余阵列上实现。 SAN包括多个控制器和通信路径，以允许故障安全和故障切换操作。 多个控制器可以松耦合以提供n路冗余并且具有多于一个用于彼此通信的独立信道。 在涉及控制器或控制器接口的故障中，通过受影响的接口访问的虚拟磁盘将重新映射到另一个接口，以便继续提供高数据可用性。 特别地，公共存储器存储设备连接到每个控制器的后端以提供存储区域。 以这种方式，可以通过类似于控制器已经用于当前访问连接到控制器的后端的物理盘的操作来访问公共存储器存储设备。

公开(公告)号：US20140019698A1

公开(公告)日：2014-01-16

申请号：US13550152

申请日：2012-07-16

Applicant: Michael H. Pittelko ,  Mark David Olson

Inventor： Michael H. Pittelko ,  Mark David Olson

IPC: G06F12/16

CPC classification number: G06F3/0619 ,  G06F3/0665 ,  G06F3/0689 ,  G06F11/1451 ,  G06F11/1456 ,  G06F11/1464 ,  G06F11/2071 ,  G06F11/2074 ,  G06F2003/0692 ,  G06F2201/84

Abstract: A method of data replication from a first data storage device to a second data storage device. The method may include generating, at the first data storage device, at spaced time intervals, a plurality of snapshots for a logical data volume of the first data storage device, the logical data volume being an abstraction of data blocks from one or more physical storage devices, each snapshot identifying changes of data for at least a portion of the logical data volume since a most previous snapshot. Also at the first data storage device, the method includes generating a delta volume, the delta volume indicating changes in the data of at least a portion of the logical data volume between two non-consecutive snapshots. The method further involves replicating the delta volume to the second data storage device, and replicating the changes to the data indicated therein at the second data storage device.

Abstract translation: 一种从第一数据存储设备到第二数据存储设备的数据复制的方法。 该方法可以包括在第一数据存储设备处以间隔的时间间隔生成用于第一数据存储设备的逻辑数据卷的多个快照，该逻辑数据卷是从一个或多个物理存储器抽取数据块 设备，每个快照识别自从最先前的快照以来的逻辑数据卷的至少一部分的数据的改变。 此外，在第一数据存储设备中，该方法包括生成增量卷，该增量体积指示两个非连续快照之间的逻辑数据卷的至少一部分的数据的变化。 该方法还包括将增量体积复制到第二数据存储设备，并且在第二数据存储设备上复制对其中指示的数据的改变。