Patent application number | Description | Published |
20110145497 | Cluster Families for Cluster Selection and Cooperative Replication - An apparatus, system, and method are disclosed to create cluster families for cluster selection and cooperative replication. The clusters are grouped into family members of a cluster family base on their relationships and roles. Members of the cluster family determine which family member is in the best position to obtain replicated information and become cumulatively consistent within their cluster family. Once the cluster family becomes cumulatively consistent, the data is shared within the cluster family so that all copies within the cluster family are consistent. | 06-16-2011 |
20120203964 | SELECTING A VIRTUAL TAPE SERVER IN A STORAGE SYSTEM TO PROVIDE DATA COPY WHILE MINIMIZING SYSTEM JOB LOAD - In a storage system including plural source storage devices, a target storage device selects which source storage device to accept a copy request from the target storage device so as to minimize the load on the entire system. The system calculates first and second load values for job loads being processed. System load values for the system are derived from job load value of a specific data, and respective load values for first and second source storage devices. The system compares the system load values to select a storage device to provide the data copy so as to minimize the load on the entire system. | 08-09-2012 |
20120290805 | CLUSTER FAMILIES FOR CLUSTER SELECTION AND COOPERATIVE REPLICATION - An apparatus, system, and method are disclosed for cooperative replication of multiple clusters. A copy request to copy a volume into a first cluster is received. A determination is made whether the first cluster is a family member of a cluster family. If the first cluster is a family member of the cluster family, a determination is made whether another family member already completed copying the volume. If another family member has not already copied the volume, the first cluster is designated to inherit the copy request. The copy request is executed and the volume is cooperative replicated into the cluster family. Cumulative consistency is achieved within the cluster family. The volume is shared within the cluster family so that all copies of the volume within the cluster family are consistent. | 11-15-2012 |
20130332673 | SELECTING A VIRTUAL TAPE SERVER IN A STORAGE SYSTEM TO PROVIDE DATA COPY WHILE MINIMIZING SYSTEM JOB LOAD - In a storage system including plural source storage devices, a target storage device selects which source storage device to accept a copy request from the target storage device so as to minimize the load on the entire system. The system calculates first and second load values for job loads being processed. System load values for the system are derived from job load value of a specific data, and respective load values for first and second source storage devices. The system compares the system load values to select a storage device to provide the data copy so as to minimize the load on the entire system. | 12-12-2013 |
20140344540 | CLUSTER FAMILIES FOR CLUSTER SELECTION AND COOPERATIVE REPLICATION - Cluster families for cluster selection and cooperative replication are created. The clusters are grouped into family members of a cluster family base on their relationships and roles. Members of the cluster family determine which family member is in the best position to obtain replicated information and become cumulatively consistent within their cluster family. Once the cluster family becomes cumulatively consistent, the data is shared within the cluster family so that all copies within the cluster family are consistent. Each family member in the family replicates 1/Nth volumes and N represents a total number of cluster family members in the family. | 11-20-2014 |
20160103616 | CLUSTER FAMILIES FOR CLUSTER SELECTION AND COOPERATIVE REPLICATION - Cluster families for cluster selection and cooperative replication are created. The clusters are grouped into family members of a cluster family base on their relationships and roles. Members of the cluster family determine which family member is in the best position to obtain replicated information and become cumulatively consistent within their cluster family. Once the cluster family becomes cumulatively consistent, the data is shared within the cluster family so that all copies within the cluster family are consistent. | 04-14-2016 |
Patent application number | Description | Published |
20120084499 | SYSTEMS AND METHODS FOR MANAGING A VIRTUAL TAPE LIBRARY DOMAIN - Systems and methods for managing a virtual tape library (VTL) domain capable of being coupled to a host are provided. One system includes a plurality of VTL nodes configured to store multiple scratch erased volumes. Each VTL node comprises a processor configured to perform at least a portion of the below method. One method includes receiving a request from the host to de-mount a volume in one of the plurality of VTL nodes, transferring the volume to a scratch category in response to receiving the request, erasing data in the volume and categorizing the volume as a scratch erased volume, and providing ownership of the scratch erased volume to a VTL node in the plurality of VTL nodes based on pre-determined criteria for the plurality of VTL nodes. Also provided are computer storage mediums including computer code for performing the above method. | 04-05-2012 |
20120131280 | SYSTEMS AND METHODS FOR BACKING UP STORAGE VOLUMES IN A STORAGE SYSTEM - Systems and methods for backing up storage volumes are provided. One system includes a primary side, a secondary side, and a network coupling the primary and secondary sides. The secondary side includes first and second VTS including a cache and storage tape. The first VTS is configured to store a first portion of a group of storage volumes in its cache and migrate the remaining portion to its storage tape. The second VTS is configured to store the remaining portion of the storage volumes in its cache and migrate the first portion to its storage tape. One method includes receiving multiple storage volumes from a primary side, storing the storage volumes in the cache of the first and second VTS, migrating a portion of the storage volumes from the cache to storage tape in the first VTS, and migrating a remaining portion of the storage volumes from the cache to storage tape in the second VTS. | 05-24-2012 |
20130282975 | SYSTEMS AND METHODS FOR BACKING UP STORAGE VOLUMES IN A STORAGE SYSTEM - Systems and methods for backing up storage volumes are provided. One system includes a primary side, a secondary side, and a network coupling the primary and secondary sides. The secondary side includes first and second VTS including a cache and storage tape. The first VTS is configured to store a first portion of a group of storage volumes in its cache and migrate the remaining portion to its storage tape. The second VTS is configured to store the remaining portion of the storage volumes in its cache and migrate the first portion to its storage tape. One method includes receiving multiple storage volumes from a primary side, storing the storage volumes in the cache of the first and second VTS, migrating a portion of the storage volumes from the cache to storage tape in the first VTS, and migrating a remaining portion of the storage volumes from the cache to storage tape in the second VTS. | 10-24-2013 |
Patent application number | Description | Published |
20130176641 | TAPE STORAGE DEVICE - A method, and tape storage device configured to perform such method, according to various embodiments, includes writing data stored in a buffer onto a tape; writing an interval marker on the tape after the data stored in the buffer is written onto the tape; writing next data subsequent to the interval marker when the next data is stored in the buffer in a first round corresponding to a first-time write in a single track in the tape; writing data stored in the buffer in an area of the interval marker in a second round corresponding to a second-time write in the single track; and writing data stored in the buffer in an area of the interval marker in which no data is written in each of third and subsequent rounds corresponding to third- and subsequent-time writes in the single track. | 07-11-2013 |
20150015988 | TAPE STORAGE DEVICE - A method, and apparatus configured to perform such method, according to various embodiments, includes writing data stored in a buffer onto a recording medium using a write head in a first round of writing. An interval marker is written on the recording medium in the first round of writing when the buffer is empty. Next data is written onto the recording medium after the interval marker in the first round of writing. Data is written in an area of the interval marker in a second round of writing performed subsequent to the first round. | 01-15-2015 |
20150154084 | FLASH COPY FOR DISASTER RECOVERY (DR) TESTING - In one embodiment, a system includes a processor and logic integrated with and/or executable by the processor, the logic being configured to cause the processor to define a disaster recovery (DR) family, the DR family having one or more DR clusters accessible to a DR host and one or more production clusters accessible to a production host, wherein the DR host is configured to replicate data from the one or more production clusters to the one or more DR clusters, create a backup copy of data stored to the one or more production clusters, store the backup copy to the one or more DR clusters, establish a time-zero in the DR family, and share a point-in-time data consistency at the time-zero among all clusters within the DR family. Other systems, methods, and computer program products are presented for DR testing, according to more embodiments. | 06-04-2015 |
20150154085 | FLASH COPY FOR DISASTER RECOVERY (DR) TESTING - In one embodiment, a system includes a processor and logic integrated with and/or executable by the processor, the logic being configured to cause the processor to access a snapshot of data stored on one or more DR clusters within a disaster recovery (DR) family only when the snapshot was made consistent with respect to data on one or more production clusters within the DR family before a time-zero, and perform DR testing using the snapshot, wherein the time-zero represents a time selected to simulate a disaster, wherein the DR family includes one or more DR clusters accessible to a DR host and the one or more production clusters accessible to a production host, and wherein the DR host is configured to replicate data from the one or more production clusters to the one or more DR clusters. | 06-04-2015 |
20150154271 | TIME-DELAYED REPLICATION FOR DATA ARCHIVES - In one embodiment, an apparatus includes a processor and logic integrated with and/or executable by the processor configured to cause the processor to receive data to store to a first cluster, store one or more copies of the data to the first cluster, and set a time-delayed copy consistency point time-delayed cops consistency point indicating an amount of time in which data stored to the first cluster is aged prior to being copied from the first cluster to a second cluster. In another embodiment, a method for time-delayed replication includes receiving data to store to a first cluster, storing one or more copies of the data to the first cluster, and setting a time-delayed copy consistency point, the time-delayed copy consistency point indicating an amount of time in which data stored to the first cluster is aged prior to being copied from the first cluster to a second cluster. | 06-04-2015 |
20150355978 | SYSTEMS AND METHODS FOR BACKING UP STORAGE VOLUMES IN A STORAGE SYSTEM - Systems and methods for backing up storage volumes are provided. One system includes a primary side, a secondary side, and a network coupling the primary and secondary sides. The secondary side includes first and second VTS including a cache and storage tape. The first VTS is configured to store a first portion of a group of storage volumes in its cache and migrate the remaining portion to its storage tape. The second VTS is configured to store the remaining portion of the storage volumes in its cache and migrate the first portion to its storage tape. One method includes receiving multiple storage volumes from a primary side, storing the storage volumes in the cache of the first and second VTS, and migrating a portion of the storage volumes from the cache to storage tape in the first VTS. | 12-10-2015 |