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
◦ Is available for the ESL G3 and MSL6480 Tape Libraries.
◦ Is not available for the 1/8 G2 Tape Autoloader nor the MSL2024, MSL4048, MSL8048,
or MSL8096 Tape Libraries.
Traditional library control path and drive connections without failover
A typical connection for a Fibre Channel tape library using the drive to bridge commands to the
library controller in a two drive tape library is shown in “Typical bridged library controller
connection” (page 7).
Figure 1 Typical bridged library controller connection
1. HP Ultrium Dual Port Fibre Channel Tape Drives
2. Host connection
3. Internal connection
In the typical bridged library controller connection each tape drive has one physical link to the
SAN switch and connects to the SAN switch as one Fibre Channel device.
The tape drive hosting the library controller path connects as one Fibre Channel device containing
two logical units. The tape drive is logical unit number zero and the tape library is logical unit
number one. The tape library Fibre Channel device contains a tape drive logical unit and a media
changer logical unit. The logical view of the tape library is shown in “Logical view of traditional
configuration” (page 8).
Traditional library control path and drive connections without failover 7