Quantum ACL 4/52, Дополнительное руководство

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ACL 4/52 Software Interface Guide
Document 6211225-03
Version 3.0
C-8 Monitoring Drives
A data transfer element that is currently being cleaned as part of a fully
automatic cleaning operation has the Access bit set to 0, the Except bit set to 1
and the status set to Cleaning Cartridge Installed (ASC=30 ASCQ=03).
Monitoring Drives
In Host Initiated Cleaning Mode, the host is fully responsible for monitoring
the drives to determine when a drive indicates that cleaning is required.
In Fully Automatic Cleaning Mode, the library monitors the drives to
determine when a drive indicates that cleaning is required.
Drive Interface
The library examines the drive flag “CLEANING_ REQUIRED.” When this
flag is set, it indicates that the drive requires cleaning.
Drive Monitoring
All installed drives are checked following the completion of a system
inventory and all drives meeting the conditions detailed in section “Drive
Interface,” are noted as requiring cleaning. On the completion of a Move
Medium command from any drive, only that drive is checked and if it meets
the conditions detailed in section “Drive Interface,” it is noted as requiring
cleaning.
Initiating Drive Cleaning Operations
In Host Initiated Cleaning Mode, the host is fully responsible for initiating
and controlling drive cleaning operations. The host may choose to initiate a
drive cleaning operation while in Fully Automatic Cleaning Mode. In this
case, the library updates the cleaning cartridge’s “use count,” but does not
perform any other support functions for the cleaning operation.
In Fully Automatic Cleaning Mode, the library initiates drive cleaning
operations for a drive after it has been determined that it requires cleaning. If
two or more drives require cleaning, the drives are cleaned one at a time.