Emc IP Holding Company LLC

Alexander Shadrin

Vitaly Stanislavovitch Kozlovsky

Ivan Valentinovich Gumenyuk

Inga Petryaevskaya

Denis Serov

Automated Tiered Storage (ATS) has become widely accepted technique in IT industry. Since IO data has different data densities on storage systems, higher storage capacity and improved performance can be achieved by combining two or more storage device tiers having different performance and cost characteristics. These multiple different storage device tiers can be combined into one automated storage pool, which automatically chooses optimal data placement for achieving both the highest performance and the lowest cost. When the storage device tier information can be stored as metadata for each of the data chunks. When there is a system failure and data needs to recovered, the device tier information metadata can be used to restore data to the predetermined optimum storage device tier of the ATS system which shortens the post-recovery warm-up time.

Dynamic rule based model for long term retention

Systems and methods for efficient deduplication and/or provisioning of LUNs are disclosed. A first unique data block pool for a first LUN of a plurality of deduplicated LUNs is accessed, the first unique data block pool comprising a first plurality of unique data blocks for representing data stored on the first LUN. A second unique data block pool for a second LUN of the plurality of LUNs is accessed, the second unique data block pool comprising a second plurality of unique data blocks for representing data stored on the second LUN. It is determined a correspondence metric for the first unique data block pool and the second unique data block pool exceeds a pre-determined threshold. The first LUN and the second LUN are joined to form a first combined LUN. The first unique data block pool and the second unique data block pool are joined.

Growing community of inventors

St. Petersburg, Russia

Alexander Shadrin