ISM message during onbar backup

1st question I received the following unix e-mail during a full backup of the database on /dev/rmt0. /dev/rmt1.1 is the Logical Log backup device. device automatically disabled ISM Device Disabled: Device /dev/rmt1.1 is automatically disabled. Consecutive error (21) exceeded the maximum consecutive errors allowed. Please fix the device or set to a higher value for the Max consecutive errors attribute in the device resource. ---------------------------------------------------------------------------- ----------------------------------- 2nd question How do I verify an "onbar -b" backup and an automatic Logical Log backup created using the log_full.sh script? Thanks, Ron C. Schwingel