HP StoreEver Tape Libraries Failover User Guide (5697-3323, June 2014)
Table Of Contents
- HP StoreEver Tape Libraries Failover User Guide
- Contents
- 1 Overview
- 2 Enabling basic path failover
- 3 Installing advanced path failover
- 4 Preparing the switches and hosts for failover
- 5 Configuring failover for the HP StoreEver ESL G3 Tape Libraries
- 6 Configuring failover for HP StoreEver MSL6840 Tape Libraries
- 7 Configuring failover for other HP StoreEver MSL Tape Libraries
- 8 Installing and using Windows advanced path failover drivers
- 9 Installing and using Linux advanced path failover drivers
- 10 Installing and using HP-UX advanced path failover drivers
- 11 Troubleshooting failover operation
- 12 Advanced troubleshooting techniques
- 13 Support and other resources
- A Data Protector device discovery with advanced path failover
- Index
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 path1. Primary data path
4. HP Ultrium Dual Port Fibre Channel Tape Drives3. 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
10 Overview