Appendix C Automatic Drive Cleaning
Cleaning Cartridges
Quantum P4000 and P7000 Libraries User’s Guide
121
Storage and
Tracking
3
Each cleaning cartridge is tracked from the time that it is loaded into the
library. When a cleaning cartridge is unloaded from the library, the
library no longer retains information concerning that cleaning cartridge
(bar code). If a new cleaning cartridge with the identical bar code is then
imported into the library, it is considered a different cleaning cartridge
for all tracking purposes.
Each cleaning cartridge must have a unique bar code. If a cleaning
cartridge with a duplicate bar code label is imported, the original
cleaning cartridge is moved to the load port for removal from the library.
After a cleaning cartridge is used twenty times it is moved to the load
port for removal from the library.
The library adjusts for cleaning cartridges that are manually moved
within the library while the library is off-line. When an inventory is
performed (after power-up or a transition from off-line to on-line), all
cartridges are scanned and identified. Each cleaning cartridge is checked
for a previous record of location and use. Cartridges that remain in
previous locations retain their previous usage information.
If previous records do not show a cleaning cartridge with the same bar
code at a given location, the library checks if a cleaning cartridge with the
same bar code label was previously located at another location (and is not
currently at that other location). If so, the library assumes that it is the
same cleaning cartridge that was manually moved and retains all
cleaning cartridge information. If the library cannot locate a previous
record for the cleaning cartridge, it assumes the cleaning cartridge is new
and creates a new record for it.
Monitoring Usage
3
The library maintains a usage history for each cleaning cartridge within
the library. The usage history is a count of the number of times the
cleaning cartridge was used to clean a drive.
When a cleaning cartridge has been identified and imported into the
library, the usage history for that cleaning cartridge is initialized and set
to zero (0).
Each time a cleaning cartridge is removed from a drive by the robotics,
the “use count” for that cleaning cartridge is incremented by one. When
the “use count” reaches the maximum allowable number of 20, (in
automatic cleaning mode) the cleaning cartridge is moved to the load
port.
