公开(公告)号：WO2007074408A2

公开(公告)日：2007-07-05

申请号：PCT/IB2006/004062

申请日：2006-07-14

Applicant: YOTTA YOTTA, INC. ,  BROMLING, Steve ,  HAGGLUND, Dale ,  HAYWARD, Geoff ,  VAN DER GOOT, Roel ,  KARPOFF, Wayne

Inventor： BROMLING, Steve ,  HAGGLUND, Dale ,  HAYWARD, Geoff ,  VAN DER GOOT, Roel ,  KARPOFF, Wayne

CPC classification number: H04L67/1095 ,  G06F11/2058 ,  G06F11/2064 ,  G06F11/2071 ,  G06F11/2074 ,  G06F11/2079 ,  H04L67/1097 ,  H04L67/2842

Abstract: ABSTRACT OF THE DISCLOSURE Write order fidelity (WOF) is maintained for totally-active implementations wherein a plurality of access nodes at geographically separated sites can concurrently read and/or write data in a "totally active" fashion on a distributed data system. From the hosts' perspective at diverse geographic locations, a synchronous, cache-coherent view of data is provided. Data transfer is asynchronous. A time ordered data image is created and maintained so operations can be restarted after a partial system failure that causes loss of data not yet asynchronously transferred across the network, but that has been write-acknowledged to the originating host. Time ordered asynchronous data transfer is implemented as a pipeline of changes that reflect contributions from all nodes. WOF also improves network performance and lowers bandwidth consumption. Extensions can provide, in a totally-active context, features such as point-in-time snapshots, time firewalls, on-demand backend storage allocation, synchronous / asynchronous distribution of data, and continuous data protection.

Abstract translation: 公开内容的摘要针对全局主动实现维护写命令保真度（WOF），其中在地理上分离的站点处的多个接入节点可以在分布式数据系统上以“完全主动”的方式同时读取和/或写入数据。 从主机的角度来看，在不同的地理位置，提供了同步，缓存一致的数据视图。 数据传输是异步的。 创建和维护时间有序的数据映像，以便在部分系统故障后重新启动操作，导致数据丢失尚未通过网络异步传输，但已被写入确认给始发主机。 时间排序的异步数据传输实现为反映来自所有节点的贡献的变化流水线。 WOF还提高了网络性能并降低了带宽消耗。 扩展可以在完全活跃的环境中提供诸如时间点快照，时间防火墙，按需后端存储分配，数据的同步/异步分发和连续数据保护等功能。

公开(公告)号：WO2007074408A3

公开(公告)日：2007-10-11

申请号：PCT/IB2006004062

申请日：2006-07-14

Applicant: YOTTA YOTTA INC ,  BROMLING STEVE ,  HAGGLUND DALE ,  HAYWARD GEOFF ,  VAN DER GOOT ROEL ,  KARPOFF WAYNE

Inventor： BROMLING STEVE ,  HAGGLUND DALE ,  HAYWARD GEOFF ,  VAN DER GOOT ROEL ,  KARPOFF WAYNE

IPC: G06F12/16 ,  G06F11/08 ,  G11B27/36 ,  H04L12/16

CPC classification number: H04L67/1095 ,  G06F11/2058 ,  G06F11/2064 ,  G06F11/2071 ,  G06F11/2074 ,  G06F11/2079 ,  H04L67/1097 ,  H04L67/2842

Abstract: ABSTRACT OF THE DISCLOSURE Write order fidelity (WOF) is maintained for totally-active implementations wherein a plurality of access nodes at geographically separated sites can concurrently read and/or write data in a "totally active" fashion on a distributed data system. From the hosts' perspective at diverse geographic locations, a synchronous, cache-coherent view of data is provided. Data transfer is asynchronous. A time ordered data image is created and maintained so operations can be restarted after a partial system failure that causes loss of data not yet asynchronously transferred across the network, but that has been write-acknowledged to the originating host. Time ordered asynchronous data transfer is implemented as a pipeline of changes that reflect contributions from all nodes. WOF also improves network performance and lowers bandwidth consumption. Extensions can provide, in a totally-active context, features such as point-in-time snapshots, time firewalls, on-demand backend storage allocation, synchronous / asynchronous distribution of data, and continuous data protection.

Abstract translation: 本公开的摘要保持写命令保真度（WOF）用于完全有效的实现，其中在地理上分离的站点处的多个接入节点可以在分布式数据系统上以“全部活动”方式同时读取和/或写入数据。 从不同地理位置的主机角度来看，提供了同步的，缓存一致的数据视图。 数据传输是异步的。 时间顺序的数据映像被创建和维护，因此可以在部分系统故障之后重新启动操作，这会导致网络中数据尚未异步传输的数据丢失，但已经被写入确认给始发主机。 时间有序异步数据传输是作为反映来自所有节点的贡献的变更流水线来实现的。 WOF还可以提高网络性能并降低带宽消耗。 扩展可以在完全活动的环境中提供诸如时间点快照，时间防火墙，按需后端存储分配，数据的同步/异步分配以及持续数据保护等功能。

公开(公告)号：WO2007095587A3

公开(公告)日：2007-08-23

申请号：PCT/US2007/062156

申请日：2007-02-14

Applicant: YOTTAYOTTA, INC. ,  HAGGLUND, Dale ,  UNRAU, Ron ,  GRAULICH, Craig ,  KARPOFF, Wayne

Inventor： HAGGLUND, Dale ,  UNRAU, Ron ,  GRAULICH, Craig ,  KARPOFF, Wayne

IPC: H04J1/16

Abstract: Network data storage systems and methods allow computers reading and writing data at a plurality of data centers separated by, potentially, large distances to replicate data between sites such that the data is protected from failures, including complete Site failures, while not allowing network latency to significantly impede the performance of read or wπte operations. Continued access to all data is provided even after a single failure of any component of the system or after any complete failure of all equipment regardless of geographic location. Wπte data is replicated synchronously from Active Sites, e g., sites where servers are wπting data to storage resources, to Protection Sites located sufficiently close to Active Sites such that network latency will not significantly impact performance, but sufficiently far apart such that a regional disaster is unlikely to affect both sites. Write data is then asynchronously copied to Active Sites, possibly at distant sites.

公开(公告)号：WO2007095587A2

公开(公告)日：2007-08-23

申请号：PCT/US2007062156

申请日：2007-02-14

Applicant: YOTTAYOTTA INC ,  HAGGLUND DALE ,  UNRAU RON ,  GRAULICH CRAIG ,  KARPOFF WAYNE

Inventor： HAGGLUND DALE ,  UNRAU RON ,  GRAULICH CRAIG ,  KARPOFF WAYNE

CPC classification number: G06F11/2058 ,  G06F11/201 ,  G06F11/2064 ,  G06F11/2074 ,  G06F11/2079 ,  G06F2201/82 ,  H04L67/1095 ,  H04L67/1097 ,  H04L67/2842 ,  H04L69/40

Abstract: Network data storage systems and methods allow computers reading and writing data at a plurality of data centers separated by, potentially, large distances to replicate data between sites such that the data is protected from failures, including complete Site failures, while not allowing network latency to significantly impede the performance of read or write operations. Continued access to all data is provided even after a single failure of any component of the system or after any complete failure of all equipment located at any single geographic region or any failure that isolates access to any single geographic region. Write data is replicated synchronously from Active Sites, e.g., sites where servers are writing data to storage resources, to Protection Sites located sufficiently close to Active Sites such that network latency will not significantly impact performance, but sufficiently far apart such that a regional disaster is unlikely to affect both sites. Write data is then asynchronously copied to other sites, potentially including one or more Active sites, located at greater distances.

Abstract translation: 网络数据存储系统和方法允许计算机在多个数据中心读取和写入数据，这些数据中心可能距离很远，以便在站点之间复制数据，从而保护数据免受故障，包括完整的站点故障，同时不允许网络延迟 显着阻碍了读写操作的执行。 即使在系统的任何组件发生单一故障之后或者位于任何单个地理区域的所有设备发生任何完全故障或者任何将访问隔离在任何单一地理区域的故障之后，仍可继续访问所有数据。 写入数据从Active Sites（例如，服务器正在将数据写入存储资源的站点）同步复制到位于与Active Sites紧密相连的保护站点，以便网络延迟不会对性能造成重大影响，但区域灾难相当遥远 不太可能影响两个网站。 然后将写入数据异步复制到其他站点，可能包括位于更远距离的一个或多个活动站点。