SnapMirror: File-System-Based Asynchronous Mirroring for Disaster Recovery
FAST '02 Proceedings of the Conference on File and Storage Technologies
Advanced functions for storage subsystems: Supporting continuous availability
IBM Systems Journal
SNAP: Efficient Snapshots for Back-in-Time Execution
ICDE '05 Proceedings of the 21st International Conference on Data Engineering
Self-securing storage: protecting data in compromised system
OSDI'00 Proceedings of the 4th conference on Symposium on Operating System Design & Implementation - Volume 4
File system design for an NFS file server appliance
WTEC'94 Proceedings of the USENIX Winter 1994 Technical Conference on USENIX Winter 1994 Technical Conference
Thresher: an efficient storage manager for copy-on-write snapshots
ATEC '06 Proceedings of the annual conference on USENIX '06 Annual Technical Conference
Avoiding the disk bottleneck in the data domain deduplication file system
FAST'08 Proceedings of the 6th USENIX Conference on File and Storage Technologies
Skippy: a new snapshot indexing method for time travel in the storage manager
Proceedings of the 2008 ACM SIGMOD international conference on Management of data
Sparse indexing: large scale, inline deduplication using sampling and locality
FAST '09 Proccedings of the 7th conference on File and storage technologies
Smoke and mirrors: reflecting files at a geographically remote location without loss of performance
FAST '09 Proccedings of the 7th conference on File and storage technologies
The design of a similarity based deduplication system
SYSTOR '09 Proceedings of SYSTOR 2009: The Israeli Experimental Systems Conference
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Continuous Data Protection or CDP is a method for capturing all changes occurring to a storage device, allowing fine granularity restore of objects from crash consistent images. In this paper we introduce a method for creating a virtual image of a block storage device, using a CDP journal log and an image of the device at one point in time. The creation of the disk image for any point in time is created on demand. The creation algorithm is very efficient and takes only a few minutes for multiple TeraBytes of changes. The algorithm for creating the image can be formalized as a map/reduce algorithm and can be parallelized easily over multiple machines to reduce the creation time. The creation on demand of the virtual image using journaling methods, minimizes the effect on the production volumes, allowing the use of CDPs for enterprise class applications.