摘要:
A method, system and program product for dynamically changing the size of a LUN in a replication based environment, the replication environment having a splitter, a production site and a replication site, the production site having a production LUN, the replication site having a journal and a replication LUN, comprising changing the LUN size on the production site based on a request to change the size of the LUN on the production site, determining on the replication site that the LUN on the production site has changed size, determining whether it is possible to change the size of the replication LUN, based on a negative determination and in response to a request for the replication LUN, pausing replication, and based on a positive determination, changing or faking the size of the replication LUN.
摘要:
A method, system, and program product for implementing consistent snapshots in a replication environment, the replication environment having a production site having a splitter, and a storage media the method comprising, selecting a set of media from the storage medium, creating a consistency group of the selected set of storage media, creating a journal at the production site, splitting I/O to the consistency group, and recording the split I/O in the journal.
摘要:
A method, computer program product, and computing system for receiving, on a cache system, a plurality of data write requests, wherein each data write request identifies a data portion to be written to a data array associated with the cache system. The data portions associated with the data write requests are written to the cache system. The data portions associated with the data write requests are queued until the occurrence of a commit event. Upon the occurrence of the commit event, a consolidated write operation is performed to write the data portions associated with the data write requests to the data array.
摘要:
One challenge to continuous data protection (CDP) is the resources required for storage. Typically, when setting up replication, a production volume and replica are set up and initialized to copy data from the production volume to the replica. However, instead of taking a clone of the volume, there are significant advantages to taking an array-based snapshot of the volume and leveraging capabilities inherent to the snapshot to improve data protections systems using CDP. To leverage the benefits of snapshots in a CDP system, as described below, example embodiments of the present invention use multiple snapshots. Bookmarks are created to indicate the point in time each snapshot was create so that a newer snapshot may be used for replication as data is applied to the replica.
摘要:
A method and system for accelerating receipt of data in a client to client network. The method includes the steps of intercepting queries and responses, storing the intercepted queries and responses in an acceleration server and transmitting the intercepted responses to clients submitting intercepted queries. The system includes at least one acceleration server designed and configured to perform the steps included in the method.
摘要:
In one aspect, a method includes forming a virtualized grid consistency group to replicate logical units, running a first grid copy on a first data protection appliance (DPA), running a second grid copy on a second DPA, splitting to the first DPA IOs intended for a first subset of the logical units and splitting to the second DPA IOs intended for a second subset of the logical units different from the first subset of logical units.
摘要:
A method and system for accelerating receipt of data in a client to client network. The method includes the steps of intercepting queries and responses, storing the intercepted queries and responses in an acceleration server and transmitting the intercepted responses to clients submitting intercepted queries. The system includes at least one acceleration server designed and configured to perform the steps included in the method.
摘要:
A method, system, and program product for ensuring consistency of dynamically changing volumes comprising creating a production change map for a first volume; wherein the production change map is marked to represent pending IO, creating a replication change map for a second volume; wherein the replication change map is marked to represent pending IO, transferring a first signature corresponding to a portion of the first volume to the replication volume, wherein the signature does not include the portion marked as pending IO in the production change map, comparing the first signature to a second signature, the second signature corresponding to a portion of the replication volume corresponding to the portion of the production volume; wherein portions marked as dirty in the replication change map are not included in the signature.
摘要:
A method and system for accelerating receipt of data in a client to client network. The method includes the steps of intercepting queries and responses, storing the intercepted queries and responses in an acceleration server and transmitting the intercepted responses to clients submitting intercepted queries. The system includes at least one acceleration server designed and configured to perform the steps included in the method.
摘要:
In one aspect, a method to replicate data includes determining if an I/O data block from a journal is generated by a replication initialization process; if the I/O data block from a journal is generated by the replication initialization process, determining if the I/O data block from the journal comprises zero data; if the I/O data block from the journal comprises the zero data, reading an I/O data block in a volume; and determining if the I/O data block from the volume comprises zero data. The method also includes, if the I/O data block from the volume comprises zero data, bypassing writing the I/O data block from the journal to the I/O data block in the volume.