A disk drive system and method capable of dynamically allocating data is provided. The disk drive system may include a RAID subsystem having a pool of storage, for example a page pool of storage that maintains a free list of RAIDs, or a matrix of disk storage blocks that maintain a null list of RAIDs, and a disk manager having at least one disk storage system controller. The RAID subsystem and disk manager dynamically allocate data across the pool of storage and a plurality of disk drives based on RAID-to-disk mapping. The RAID subsystem and disk manager determine whether additional disk drives are required, and a notification is sent if the additional disk drives are required. Dynamic data allocation and data progression allow a user to acquire a disk drive later in time when it is needed. Dynamic data allocation also allows efficient data storage of snapshots/point-in-time copies of virtual volume pool of storage, instant data replay and data instant fusion for data backup, recovery etc., remote data storage, and data progression, etc.

Virtual disk drive system and method

The invention provides systems and methods for continuous back up of data stored on a computer network. To this end the systems of the invention include a synchronization process that replicates selected source data files data stored on the network and to create a corresponding set of replicated data files, called the target data files, that are stored on a back up server. This synchronization process builds a baseline data structure of target data files. In parallel to this synchronization process, the system includes a dynamic replication process that includes a plurality of agents, each of which monitors a portion of the source data files to detect and capture, at the byte-level, changes to the source data files. Each agent may record the changes to a respective journal file, and as the dynamic replication process detects that the journal files contain data, the journal files are transferred or copied to the back up server so that the captured changes can be written to the appropriate ones of the target data files.

Systems and methods for backing up data files

A data transmission system is disclosed which optimizes transfer and updates of information between systems by providing difference information between the systems. The system transmits data packages having instructions for manipulating user data. The data packages include a header identifying the respective packages, as well as transaction objects for effecting a change to user data on a device having object instructions.

Data transfer and synchronization system

An apparatus comprising a deformable lens element can be provided wherein a deformable lens element can be deformed to change an optical property thereof by the impartation of a force to the deformable lens element.

Apparatus and method comprising deformable lens element

Systems and methods are described for obtaining and acting upon information indicative of circulatory health and related phenomena in human beings or other subjects.

Circulatory monitoring systems and methods

For similarity based deduplication of remote data repositories, a parse module generates a rolling hash value based on a portion of an incoming stream of backup data. A comparison module compares the rolling hash value with entries stored in a rolling hash index, and in response to matching the rolling hash value with an entry in the rolling hash index, generates a strong hash value and determines if a match of the strong hash value exists in a first strong hash index. The comparison module, in response to a determination that the match does not exist in the first strong hash index, compares the strong hash value with entries in a second strong hash index in the remote data repository. A migration module, in response to a determination that the strong hash value does not match any hash entries, stores the portion of backup data as new data.

Similarity based deduplication for secondary storage

A storage manager application implemented in a first computational device maintains a virtual logical volume that represents a plurality of segments of a linear storage medium of a secondarystorage, wherein the virtual logical volume and the plurality of segments are created bythe storage manager application. A request for data is received at the first computationaldevice, from a second computational device. The storage manager application moves selected segments of the pluralityofsegments from the linear storage medium of the secondary storage to a cache storage, in anticipation that the requested data is included in the selected segments that are moved from the linear storage medium of the secondarystorage to the cache storage.

Segmentation of logical volumes

An apparatus, system, and method are disclosed for recovering a message from a failed node. A message module communicates a message to a request queue and a copy queue. A transfer module transfers the message from the request queue to a first target node in response to the message residing in the request queue. A detection module detects a failure of the first target node. A recovery module copies the message from the copy queue to the request queue in response to the failure of the first target node and the message residing in the copy queue. The transfer module further transfers the message from the request queue to a second target node in response to the message residing in the request queue.

Apparatus, system, and method for recovering messages from a failed node

For efficient Flashcopy backup and a mount, clone, instant restore, and/or file level restore task collision avoidance using dynamic volume allocation with reuse and from a shared resource pool, performing at least one attempt to reuse an existing FlashCopy target volume in a Flashcopy chain of target volumes that is not currently being used for at least one of the mount task, the clone task, instant restore task, and/or file level restore task at the same time for a FlashCopy backup If the at least one attempt to reuse the existing FlashCopy target volume fails, dynamically allocate a new Flashcopy target volume for the Flashcopy backup from a global pool of Flashcopy backup target volumes shared by a plurality of device classes

Efficient flashcopy backup and mount, clone, or restore collision avoidance using dynamic volume allocation with reuse and from a shared resource pool

A method, apparatus and frame format for allowing the conclusive determination of whether the devices are connected correctly is disclosed The invention sends a first configuration message to a library manager from a device, the first configuration message including a device address and a serial number associated with the device address, forwards to a control unit from a library manager a second configuration message, the second configuration message including position information for the device and a serial number associated with the device, forwards to the control unit from the device a third configuration message, the third configuration message including position information for the device and a serial number associated with the device and compares at the control unit the second and third configuration messages to determine whether the device and the library manager are configured correctly The configuration message may include a plurality of device addresses and a serial number associated with each of the plurality of device address The controller compares the second and third configuration messages by comparing the serial number of each of the device addresses in the second configuration message with the serial number associated with corresponding positions in the third configuration message The second and third configuration messages further include partition information associated with the device

Gregory Tad Kishi

Papers

Similarity based deduplication for secondary storage

Segmentation of logical volumes

Apparatus, system, and method for recovering messages from a failed node

Efficient flashcopy backup and mount, clone, or restore collision avoidance using dynamic volume allocation with reuse and from a shared resource pool

Method, apparatus and frame format to prevent data loss in a removable media library system due to incorrect configuration of devices