HP StoreEver MSL Tape Libraries - Manual (Page 43)

4 Using diagnostic tools and troubleshooting
This chapter provides information for verifying that the Extender is properly installed and troubleshooting
the Library Extender.
If you are installing the Extender for the first time, read this chapter for reference after installing the
Extender following the instructions in
Chapter 3 , page 27.
Extender status LEDs
The Library Extender has three LEDs that display the Extender's connection and power status.
Figure 30 Library Extender status LEDs
.
Green when the master Library is powered on and the Extender is installed
correctly. 1. Master Library connection
status
Green when the Extender is operating correctly. Flashing when the Extender
is initializing or has failed with a hard error and is no longer functional.
Initialization can take up to 15 minutes. 2. Library Extender status
Green when the lower library is powered on and the Extender is installed
correctly. 3. Lower Library connection status
All three LEDs will be green when the Extender is installed correctly and functional.
If the master Library connection status LED (1) is not green, verify the following:
• The master Library is powered on.
• The power supply status in the master Library is Good .
• Extended mode is enabled in the master Library.
• The two Libraries are properly aligned as described in Aligning the Libraries , page 38.
HP StorageWorks MSL Library Extender user guide 43