Emc IP Holding Company LLC

Mv Kiran

Manjunath Jagannatha

Ravi Shankar Panem

One embodiment is related to a method for backing up a virtual disk file using parallel save streams, comprising: retrieving a block allocation table (BAT) of the virtual disk file; splitting the BAT into a plurality of split BATs; assigning data blocks of the virtual disk file to plexes based on the plurality of split BATs, wherein each plex corresponds to one of the plurality of split BATs; and streaming the plexes to a backup apparatus in parallel, wherein each plex occupies one stream.

Fast hyper-V protection using parallel save streams

One embodiment is related to a method for encrypting a block based backup image file, comprising: preparing an unencrypted block based backup image file; determining whether a region of the unencrypted block based backup image file to be streamed to a backup medium corresponds to a block allocation table (BAT) region; streaming regions of the unencrypted block based backup image file determined as not corresponding to the BAT region unchanged to the backup medium; and encrypting regions of the unencrypted block based backup image file determined as corresponding to the BAT region before streaming the regions determined as corresponding to the BAT region to the backup medium.

Security protection for virtual machine backups

One embodiment is related to a method for backing up a shared volume using parallel save streams, comprising: taking a snapshot of the shared storage volume that is shared across a plurality of nodes; identifying used blocks on the shared storage volume based on the snapshot; organizing logically the used blocks into extent sets, wherein a number of extent sets is equal to a number of the plurality of nodes; assigning the extent sets to the plurality of nodes, wherein each of the plurality of nodes is assigned one extent set; and streaming, by each of the plurality of nodes, a respective extent set to a backup apparatus, wherein the plurality of nodes stream the extent sets in parallel.

Growing community of inventors

Bengaluru, India

Mv Kiran