HP StoreEver MSL6480 Tape Library User Manual
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NOTE:
The MSL libraries monitor drive removal events and if the active control path drive is
removed, the library will automatically move the control path to the standby drive. However, if the
control path drive is not removed but SAN connectively is lost, the administrator might need to use
the library remote management interface to move the control path to the standby drive.
If no library commands are sent while the port is being reconfigured, the port change happens
with virtually no disruption to the SAN. Commands sent while the port is being reconfigured might
be completed but cannot report the command status to the application so the application will
receive an error. Applications that retry commands are able to use the library following
reconfiguration of the port. Applications that do not retry can be restarted remotely without making
any hardware configuration changes.
Figure 4 Control path port failover example configuration
2. Standby data path
1. Primary data path
4. HP Ultrium Dual Port Fibre Channel Tape Drives
3. Host connection
6. Active logical link to switch shares physical link on drive
#1
5. Passive logical link to switch shares physical link on drive
#2
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Overview