Automated data storage library with a movable column for selective

Abstract

Disclosed is an automated data storage library for storage and retrieval and selective export and import of portable data storage media stored in storage cells of portable magazines. Each portable magazine has a detent, and has registration surfaces, such as a sleeve at each of two corners. A columnar elevator supports a columnar stack of the portable magazines, and has an opening at its top level external to the library, and pushes the stack toward the top level. Fixed registration shafts in the library mate with the magazine sleeves to prevent lateral movement while allowing columnar movement of the magazines. The media may be accessed by a picker at the storage cells of the magazines at all levels in the stack internal to the library. A releasable latch engages the detent of the magazine at the penultimate level of the stack (e.g., the top position within the library), holding the stack against the upward pushing of the elevator, and external latches each engage a magazine in the stack at the top level. Selected ones of the latches are released by a library manager or operator to allow the elevator to push a selected magazine in the column to the top level, where it may be exported. The magazines held at the penultimate level or lower may still be accessed by the picker.