Quantum Scalar i6000 User Manual page 729

Appendix A: Frequently Asked Questions
The library should recover even if power goes out completely during a
backup. If power remains off, press the Power button and leave it in the
off position until you can obtain a reliable power source. When the
power to the library is turned back on, the library will recover. You must
re-run the backup using your application software.
If the library does not automatically come back up after a power
outage, cycle library power. Cycling library power involves shutting
down the library, powering it off, and then powering it on. For more
information, see Shutting Down/Rebooting the Library on page 485,
Powering Off the Library on page 487, and Powering On the Library on
page 487. The blue LED on the power supply will be on and not
blinking.
Quantum Scalar i6000 User's Guide 683