摘要:
Failover is provided between groups of logical units of storage presented as virtual arrays. A primary virtual array has at least one primary virtual port coupled to a fabric, each primary virtual port having a source virtual port name and a source virtual port address. A secondary virtual array has one or more secondary virtual ports coupled to the fabric, each secondary virtual port having a secondary virtual port name and a secondary virtual port address. All data resident on the primary virtual array is copied to the secondary virtual array. If a failure occurs in the primary virtual array, the secondary virtual port names and LUN names and numbers are replaced with the primary virtual port names and LUN names and numbers. The fabric then updates its name server database so that the database associates the primary virtual port names and LUN names and numbers with the secondary virtual port addresses.
摘要:
A method and computer program product for defining a multicast group within a local area network. The multicast group includes a storage initiator device and a plurality of mirrored targets. Each mirrored target includes a plurality of storage targets. A write request for storing a data segment within the multicast group is received on the storage initiator device. The data segment is multicast to the plurality of mirrored targets included within the multicast group. A unique data chunk of the data segment is stored on each of the plurality of mirrored targets.
摘要:
Described are systems and methods of migrating data from a source array to a destination array transparently with respect to a management application program executing on a host system and using management information to send management messages to the storage arrays. Data are copied from the source array to the destination array during a data migration event. A first array management interface is associated with the source array and a second array management interface is associated with the destination array. Each array management interface includes management information that a management application executing on the host can use to communicate with the storage array. The first and second array management interfaces are exchanged during the data migration event so that the array management interface associated with the destination array becomes associated with the source array and the array management interface associated with the source array becomes associated with the destination array.
摘要:
A method and computer program product for receiving a newly-received data portion for storing within a cache memory system. A determination is made concerning whether the newly-received data portion corresponds with at least one data portion previously written to and currently resident on the cache memory system. If the newly-received data portion does not correspond with at least one previously-written and currently resident data portion, the newly-received data portion is written to the cache memory system.
摘要:
A system, method and computer program product for receiving on a non-volatile, solid-state, cache memory system, a data segment, including a plurality of data elements, from one or more of a volatile, solid-state, cache memory system and a non-volatile, electromechanical memory system. The data segment may be stored on the non-volatile, solid-state, cache memory system. Each data element includes one or more data extents.
摘要:
A method and computer program product for defining a multicast group within a local area network. The multicast group includes a storage initiator device, a plurality of storage targets, and one or more coded targets. A write request for storing a data segment within the multicast group is received on the storage initiator device. The data segment is multicast to the plurality of storage targets and the one or more coded targets included within the multicast group. A unique data chunk of the data segment is stored on each of the plurality of storage targets. A unique coded chunk of the data segment is generated and stored on each of the one or more coded targets.
摘要:
A system, method and computer program product for detecting a failed storage device within an “n” device array. The “n” device array is configured to store “n” device array formatted data. The “n” device array is reconfigured into an “n−1” device array. The “n” device array formatted data is written to the “n−1” device array in an “n−1” device array format.
摘要:
Source and destination fiber channel devices are coupled to a fiber channel fabric. Hosts communicate with the fiber channel devices using fiber channel addresses. All data is copied from the source fiber channel device to the destination fiber channel device. Source port names and LUN names are exchanged with destination port names and LUN names so that the source device has the destination port and LUN names and the destination device has the source port and LUN names. The fabric reloads its name server database for use by the host(s) so that the database associates the source port and LUN names with the destination port and LUN names and the destination port and LUN names with the source port and LUN names. The names known to the host have not changed and the destination fiber channel device now appears to the host as the source fiber channel device.
摘要:
A method and computer program product for defining a multicast group within a local area network. The multicast group includes a storage initiator device and a plurality of storage targets. A write request for storing a data segment within the multicast group is received on the storage initiator device. The data segment is multicast to the plurality of storage targets included within the multicast group. The data segment is stored on each of the plurality of storage targets.
摘要:
An aggregator device provides an iSCSI client with a list of storage areas which are offered by a single aggregated network array. The storage areas on the list are provided by multiple data storage systems and are accessible by the client using data paths which are out-of-band with the aggregator device. The aggregator device further receives an iSCSI login request from the client. The iSCSI login request identifies a particular storage area on the list of storage areas. The aggregator device further generates and sends an iSCSI login response to the client in response to the iSCSI login request. The iSCSI login response includes a network address of a particular data storage system of the multiple data storage systems which provides the particular storage area to enable the client to directly access the particular storage area using a data path which is out-of-band with the aggregator device.