18 results about "Secondary site" patented technology

An embodiment provisions a Validation Area within a consistency group of a primary site and a Validation Area within a consistency group of a secondary site. The embodiment provisions a Validation Writer in the primary site and provisions a Validation Reader in the secondary site; the Validation Writer writes a validation metric into the Validation Area in the primary site at an interval determined by a recovery point objective. The embodiment also reads the validation metric by the Validation Reader in the secondary site, computes a validation result based on the validation metric, the recovery point objective and a recovery point time delta where the validation result comprises an outcome of a replication of the primary site to the secondary site where the Validation Area of the primary site, the Validation Area of the secondary site, the Validation Writer and the Validation Reader are storage and application agnostic.

A service migration technique moves (migrates) a snapshot storage service of an archival storage system from a primary site to a secondary site in accordance with a planned failover event. The snapshot storage service is configured to provide storage and retrieval of large amounts of snapshots (e.g., recovery points) of application workloads stored as objects on one or more buckets of an object store. As part of finalization of the recovery points (RPs) at the primary site, the snapshot storage service stores snapshot data and metadata of the RPs (e.g., as service state) in the object store. The snapshot storage service may then be migrated to the secondary site, wherein migration involves terminating the service at the primary site and instantiating the service at the secondary site. The instantiated storage service instance may then rebuild its service state from the object store, and resume storage and retrieval operations directed to RPs serviced by the instance.

The application discloses a multi-level guarantee site selection method based on a network structure. The application introduces a multi-level site selection method based on a task mission. In view of the actual demand of government operation and management under the epidemic background, different site selection targets are determined according to different guarantee level task missions, thereby completing the construction of a three-level site selection model for epidemic life material guarantee, and improving the authenticity and feasibility of the guarantee site selection model. Moreover, according to the node site selection condition of the lower level, the application selects the node of the upper guarantee level, and forms a stable and convenient network guarantee system. In addition, the application divides the node site selection model of the first guarantee level with a large number of nodes into two stages through a two-stage algorithm, introduces secondary site selection based on heuristic rules for the residential area with high demand, reduces the complexity of the solution of the first stage, and effectively improves the site selection efficiency.

Masking a data rate of transmitted data is disclosed. As data is transmitted from a production site to a secondary site, the data rate is masked. Masking the data rate can include transmitting at a fi

A computer system includes a primary site having a primary volume, and having an instance that performs data processing related to input / output data, and a secondary site having a secondary volume, and having an instance. Remote copy is set up between the primary and secondary volumes, and the instance of the primary site transfers data input to or outputted from the primary volume to the secondary site, while the instance of the secondary site stores the transferred data in the secondary volume. The computer system further includes a specifications changing section that changes specifications of the instance of the secondary site when a failover switching process of switching a performer of the data processing from the primary to secondary site is performed, or when a failback switching process of switching the performer of the data processing from the secondary to primary site after the failover switching process is performed.

To propose a configuration that achieves both performance and cost when a secondary site of remote copy is constructed on a cloud.SOLUTION: A computer system includes: a storage system in which a primary site is constructed that provides one or a plurality of positive volumes to a host; a storage cluster that is connected to the storage system via a network and has a plurality of nodes; and a management computer. When a secondary site having a primary volume and a secondary volume to which a remote copy of the primary site is set is constructed in the storage cluster, the management computer manages a plurality of volumes including the secondary volume as a group and controls the plurality of volumes including the secondary volume to be arranged in a plurality of nodes of the storage cluster based on the group.SELECTED DRAWING: Figure 1

Masking a data rate of transmitted data is disclosed. As data is transmitted from a production site to a secondary site, the data rate is masked. Masking the data rate can include transmitting at a fixed rate, a random rate, or an adaptive rate. Each mode of data transmission masks or obscures the actual data rate and thus prevents others from gaining information about the data or the data owner from the data transfer rate.

A smart prefetching of operations technique prefetches metadata and / or data of objects stored in a multi-cloud snapshot technology (MST) service associated with an object store. One or more data objects (e.g., an application) at a primary site may be designated for backup or failover to a secondary site, e.g., in the event of failure of the primary site. Smart prefetching logic of the MST is configured to prefetch the object metadata and / or object data from the object store to serve subsequent requests without accessing the object store. To that end, when storing data to the object store as one or more objects, MST maintains specific metadata along with the data of the objects. The technique utilizes the specific metadata to prefetch the object metadata and / or object data before receiving actual read requests for that data to improve the read latency and throughput when restoring the application as soon as possible.

Method, computer program product, and computer system are provided. A controller component verifies the state of all file sets. The controller component initiates a sub-controller component, based on successfully verifying the state of the file sets. The sub-controller component suspends write operations to all databases at the primary site computer. Based on the suspending completing without error, the sub-controller executes point-in-time copy processes for each of the databases and for application non-database files at the primary site computer. Applications using the databases and non-database files are not suspended. Based on all of the point-in-time copy processes completing without error, the sub-controller component resumes write operations to all databases at the primary site computer. The point-in-time copies are automatically sent to the secondary site computer so that the applications can operate at the secondary site computer if the primary site computer becomes unavailable.

An embodiment provisions a Validation Area within a consistency group of a primary site and a Validation Area within a consistency group of a secondary site. The embodiment provisions a Validation Writer in the primary site and provisions a Validation Reader in the secondary site; the Validation Writer writes a validation metric into the Validation Area in the primary site at an interval determined by a recovery point objective. The embodiment also reads the validation metric by the Validation Reader in the secondary site, computes a validation result based on the validation metric, the recovery point objective and a recovery point time delta where the validation result comprises an outcome of a replication of the primary site to the secondary site where the Validation Area of the primary site, the Validation Area of the secondary site, the Validation Writer and the Validation Reader are storage and application agnostic.

Techniques for migration or disaster recovery of vTPM enabled virtual machines include non-transitory computer-readable media storing program instructions that, when executed by one or more processors associated with a computing device, cause the one or more processors to perform a method including transmitting, by a primary site, an encryption secret for an encrypted storage device to a secondary site, the encrypted storage device storing data encrypted based on the encryption secret; and transmitting, by the primary site using an unsecure channel, the data as encrypted based on the encryption secret to the secondary site.

The present invention discloses a batch detection method for the three-dimensional posture of the pre-embedded rod group of the arch seat of a large-span arch bridge, which relates to the field of bridge engineering technology. It includes selecting the main site and the auxiliary site based on the arch seat, setting up a measurement scanning device, constructing a central construction coordinate system for encryption processing, making the coordinates of all sites consistent with the same reference object, obtaining the transformation matrix K, obtaining the arch seat inclination, the coordinates of the plane center point and the horizontal distance based on the design drawings, generating the normal vector n1 and the upper and lower planes п1 and п2, intercepting the point cloud to fit two small cylinders, and correspondingly obtaining the upper and lower base points and the fitting diameter R of the small cylinder, and generating the rod space linear equation accordingly, making the actual diameter R' and the fitting diameter R for error comparison, and calculating the intersection of the planes п1 and п2 and the rod space linear equation if it is within the threshold range, obtaining the three-dimensional coordinates of the center of the upper and lower plane openings, and then converting them into two-dimensional coordinates to obtain the coordinates of the center of the pressure plate opening to determine the posture of the rod group. The present invention can achieve the effect of improving the opening accuracy of the pressure plate.

Violation of a recovery requirement is prevented at the time of a failover to a secondary site in case of failure while suppressing cost on hardware of the secondary site in normal times. In a computer system including: a primary site storage system; a secondary site storage system; and a management device, the management device can change a resource of the secondary site storage system, and in the case where a failure occurs in the primary site, the management device performs a failover of making a corresponding secondary volume take over operation of the primary volume, controls so as to enhance a resource of the secondary site storage system, and controls the failover so that a secondary volume which starts operating by the failover before the enhancement of the resource and a secondary volume which starts operating by the failover after the enhancement of the resource exist.

To predict the performance impact due to new volume allocation, with high accuracy.SOLUTION: A storage system comprises a primary site that holds a primary volume, and a secondary site that holds a secondary volume and a journal volume. The primary site is configured with one or more nodes. The secondary site is configured with a plurality of nodes. When a management program running on any node or a predetermined management apparatus creates a new secondary volume and a new journal volume on the secondary site, the management program predicts the load of a processor for the new secondary volume under the operating conditions for performing redundancy processing within the secondary site, predicts the load for the new journal volume under the operating conditions for not performing the redundancy processing within the secondary site, and selects a node on which to place a new volume based on the results of load prediction.SELECTED DRAWING: Figure 1

A site and storage tier aware technique replicates data as one or more recovery points (RPs) from a primary site to a secondary site in a multi-site data replication environment. A storage tier aware reference resolver determines (i) an amount of RP data transfer associated with the replication and (ii) location information associated with a cloud storage tier storing the RP data in an object store. The storage tier aware reference resolution aspect provides two additional factors to consider when retrieving data of a reference RP from cloud storage: (iii) the time (duration) needed to retrieve the data and (iv) the cost (financial expense) needed to retrieve the data. In addition, a site aware reference resolution aspect of the technique determines an optimal RP to use as the reference RP and involves consideration of (v) which RPs have been replicated from the primary site to the secondary site and (vi) which RPs have been retained for storage at the sites.

An embodiment provisions a Validation Area within a consistency group of a primary site and a Validation Area within a consistency group of a secondary site. The embodiment provisions a Validation Writer in the primary site and provisions a Validation Reader in the secondary site; the Validation Writer writes a validation metric into the Validation Area in the primary site at an interval determined by a recovery point objective. The embodiment also reads the validation metric by the Validation Reader in the secondary site, computes a validation result based on the validation metric, the recovery point objective and a recovery point time delta where the validation result comprises an outcome of a replication of the primary site to the secondary site where the Validation Area of the primary site, the Validation Area of the secondary site, the Validation Writer and the Validation Reader are storage and application agnostic.

A first management device is provided that sets, when a second storage node is increased / decreased at a secondary site, a new remote copy path between a first storage node provided with a primary volume associated with a secondary volume moved in accordance with the increase / decrease, and deletes an original remote copy path set between the second storage that is a movement source of the secondary volume moved in accordance with the increase / decrease and the first storage node.

A recovery orchestration pipeline has stages configured to control efficient failover and recovery of applications in a multi-site disaster recovery (DR) environment. The applications run on user virtual machines (UVMs) at a primary site of the DR environment and connect to block storage devices (BSDs) that export virtual disks over a storage protocol to consume data including a recovery plan for disaster recovery. The recovery plan includes a recovery configuration whose generation is triggered by a user via a graphical user interface (GUI) and specifies resource requirements needed to recover the applications at a secondary site in the event of a disaster. The orchestration pipeline is initiated via single click of the GUI and completion of the stages of the pipeline is displayed as progress via the GUI to allow recovery of the applications without user intervention.