Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the head
Patent
1996-06-25
1999-04-13
Hindi, Nabil
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Controlling the head
360 53, 360 64, 36013023, 369 54, 369 58, 369 34, 369 32, G11B 700
Patent
active
058943765
ABSTRACT:
The present invention provides an apparatus and method for monitoring the read/write reliability of data storage devices contained within a data cartridge library system. The data cartridge library system includes multiple player/recorder devices. In accordance with one aspect of the invention, the data cartridge library computer queries a player/recorder device after it has been involved in a read/write operation. In one embodiment, the information queried is the Write and/or Read ECC Error Rates. In another embodiment, the Write and/or Read ECC Error Rates are assessed to determine whether the subject player/recorder device is experiencing read/write problems and whether remedial action is warranted. In another embodiment, the subject player/recorder device is tested using a certified test cartridge and a known data pattern. In another aspect of the invention, preventative maintenance of the data cartridge library system includes one of the player/recorder devices writing a known data pattern to a certified test and the same device, as well as the remaining player/recorder devices, reading the known data pattern from the certified cartridge. Preferably, these steps are repeated for all player/recorders in the data cartridge library system and the respective Write and Read ECC Error Rates are displayed in a matrix format to facilitate diagnosing whether any of the player/recorders are experiencing misalignment or data interchange problems.
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Hindi Nabil
Spectra Logic Corporation
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