Quantum Corporation

Advanced Digital Information Corporation

Carsten H Prigge

Bruno H Hald

Turguy Goker

Scott M Rockwell

Robert Yang

Robert Munio

James P Peng

Hoa Le

Alexander Hois

Ryan Duffy

Randall Elmer

Roderick B Wideman

Suayb Sefik Arslan

Daniel J Byers

David Tindall, Iii

Joerg Stohrer

Steve Cooper

Mark Roberts

Devin B Armstrong

Tj Quirk

Chris Cason

Darrel Somer

Mathew Aschenberg

Brian Sunnen

Jeffrey Szmyd

The technology disclosed herein enables automatic implementation of a physical barrier to protect access to data on removable storage media. In a particular embodiment, a method provides determining that the item moved into a storage position using an automatic transfer mechanism and determining that a condition for protecting the item is satisfied. Upon determining that the condition is satisfied, the method provides implementing a physical barrier that prevents the automatic transfer mechanism from removing the item from the storage position.

Automatic implementation of a physical barrier to protect removable storage media access

A tape cartridge for use in one or more tape drives of a tape library includes a cartridge housing and a magnetic tape. The magnetic tape is retained within the cartridge housing. The magnetic tape includes a first tape section that is pre-recorded with calibrated data for evaluating data durability on the magnetic tape. The magnetic tape is usable within the tape library to measure a health of the one or more tape drives and/or confirm a suitability of an operating environment within the tape library in terms of at least one of temperature and humidity. The calibrated data in the first tape section can be further configured for evaluating total transverse dimensional stability on the magnetic tape. The first tape section can include predetermined error patterns to assist in evaluating the data durability on the magnetic tape and/or periodic tape scrubbing operations to enhance data durability on the magnetic tape.

Tape library system with integrated, feedback-based environmental and data durability control

A magnetic tape device or system can store erasure encoded data that generates a multi-dimensional erasure code corresponding to an erasure encoded object comprising a code-word (CW). The multi-dimensional erasure code enables using a single magnetic tape in response to a random object/file request, and correct for an error within the single magnetic tape without using other tapes. Encoding logic can further utilize other magnetic tapes to generate additional parity tapes that recover data from an error of the single magnetic tape in response to the error satisfying a threshold severity for a reconstruction of the erasure coded object or chunk(s) of the CW. The encoding logic can be controlled, at least in part, by one or more iterative coding processes between multiple erasure code dimensions that are orthogonal to one another.

Erasure coding magnetic tapes for minimum latency and adaptive parity protection feedback

Embodiments disclosed herein provide systems, methods, and computer readable media to handle unsuccessful movements of removable storage media in an automated removable media system. In a particular embodiment, a method provides receiving one or more user provided parameters that indicate one or more types of unsuccessful media move operations that should be reported as successful. The method further provides receiving a first request to move a first item of removable storage media from a first position in the automated removable media system to a second position in the automated removable media system and initiating a first move operation of the first item from the first position to the second position by at least one changer device. The method then provides determining that the first move operation resulted in one of the one or more types of unsuccessful media move operations and indicating that the first move operation was successful in response to the first request.

Unsuccessful storage media movement handling in automated removable storage media environments

A request for a physical import/export (I/E) slot is satisfied using a tape library slot that is not a physical I/E slot. According to one embodiment, the request for the physical I/E slot, that is associated with the tape library, is received. A different slot, which is not any of the physical I/E slots associated with the tape library, is used to satisfy the request.

Satisfying a request for a physical import/export slot with a slot that is not a physical import/export slot

A method for mover transition in an open systems based media library () for use with a host () that relays command requests comprises the steps of retaining a storage medium (); selectively moving the storage medium () within the media library () with a first media mover (); and when the first media mover () has a status of unavailable due to mover transition, indicating to the host () with a control system () that the first media mover () is not ready to perform a motion operation, and is in the process of becoming ready. Additionally, the host () continues to relay command requests to the media library () when the first media mover () has the status of unavailable, and the control system () performs any subsequent command requests relayed by the host () when the first media mover () subsequently has the status of available.

Method for mover transition in an automated media library

A method of generating command instructions for a distributed mass data storage library comprises the steps of receiving an operator request from an operator, determining at least one command for at least one intelligent library component in response to the operator request, forming at least one command message containing the at least one command, and sending the at least one command message to the at least one intelligent library component for carrying out actions requested by the operator.

Method of generating control commands in a distributed mass data storage library network

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Elizabeth, CO, United States of America

Carsten H Prigge