Probably not.  I would set the drive available again:

update drive libname drivename online=yes and wait for it to happen again.
What type of drive?  Perhaps a thorough cleaning with an old toothbrush is
in order.  Barring that perhaps a close encounter with your friendly service
rep...

Kelly J. Lipp
Storage Solutions Specialists, Inc.
PO Box 51313
Colorado Springs CO 80949
719-531-5926
www.storsol.com
lipp AT storsol DOT com