Abstract:
A new approach is proposed that contemplates systems and methods to support authorized access by a second client to files stored on a local content appliances (CA), wherein each content appliance is a storage device/host configured to locally maintain entire or parts of files owned and maintained by a first user. First, a first client agent is configured to establish a region including at least one local CA and to provide authoritative copies of one or more of its files and/or their parts containing sensitive information of the first client to be stored and maintained on the CA in the region instead of uploading them to a cloud storage. The first client agent uploads only metadata of the files to the cloud storage wherein the metadata includes information on storage location and access permission of the files and/or their parts. A second client agent is configured to retrieve the metadata of the files from the cloud storage and to request access to the authoritative copies of the files and/or their parts directly from the local CA in the region based on the retrieved metadata.
Abstract:
A new approach is proposed that contemplates systems and methods to support backing up only portions of data associated with a virtual machine that have been changed since the last backup of the data was performed. During a backup process, the proposed approach looks for a journal record of a file system located within one of the partitions on a virtual disk of the virtual machine, wherein the journal record reflects disk operations that have been performed to a storage device associated with a host device/machine running the virtual machine. Once portions of the storage device which data have been modified since the last data backup are identified based on the journal of the file system, only the modified portions of the storage device are submitted to the backup process to be backed up to a backup storage device.