Emc IP Holding Company LLC

Dell Products Inc.

Ashutosh Kumar Singh

Sunil Kumar

Manjesh Venkatanarayana Chikkanayakanahally

Prashant Pokharna

Akshat Rathore

Tobin George Joseph Pulikeel

An Application Data Management System (ADMS) enables an application file system to be mounted at any selected reconstruction time (T). If the reconstruction time Tfalls intermediate snapshot creation timepoints, the ADMS creates a version of the application file system at the selected reconstruction time Tusing a snapshot of the data file from a previous application file system snapshot creation timepoint, and a snapshot of the log file from a subsequent application file system snapshot creation timepoint. The ADMS uses the snapshot of the log file from the subsequent snapshot creation timepoint to replay transactions on the snapshot of the data file from the previous snapshot creation timepoint up to the selected reconstruction time T. This enables the state of the application file system to be recreated and mounted at any arbitrary selected reconstruction time, even if the selected reconstruction time is not coincident with snapshot creation timepoints.

Automatic mount of application filesystem intermediate snapshot creation timepoints

A method for managing a storage includes applying, by a host, a first type of snapshot service to the LU of the storage, wherein the LU is identified by a logical unit number (LUN), in response to applying the first snapshot service, making a first determination that the LU is not visible to the host, wherein the host is operationally coupled to the storage and the first snapshot service continues to be applied to the LU, in response to the first determination, discontinuing applying the first type of snapshot service to the LU, and when the first snapshot service is no longer applied to the LU, applying, by the host, a second type of snapshot service to the LU.

Failsafe mechanism to import snapshots

An apparatus comprises at least one processing device configured to identify a protection operation to be performed for a virtual storage volume, the virtual storage volume comprising two or more storage volumes on two or more storage systems, a first one of the storage volumes on a first one of the storage systems comprising data that is mirrored on a second one of the storage volumes on a second one of the storage systems different than the first storage system. The processing device is also configured to monitor parameters characterizing operation of the storage systems, to generate a recommendation of a given one of the first and second storage volumes to back up to a third storage volume based on the monitored parameters characterizing operation of the storage systems, and to perform the protection operation for the virtual storage volume based on the generated recommendation.

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Bengaluru, India

Ashutosh Kumar Singh