====== ANR8779E ======
===== error code=2 =====
==== symptoms  & effects====
<code>ANR 8779E Unable to open drive <NAME>, error number= 2</code>
  * Drives go unavailable on Library Client
  * Also Error message <code>ANR1401W Mount request denied for volume <NAME> - mount failed.</code>
==== Explanation & Remedy====
Possible Reasons:
=== SCSI connection lost on Library Client ===
  * check if all tape drives are still visible on client
    * Linux: ''lssci | grep tape'', ''lssci | grep tape | wc -l''
  * rescan scsi-bus:
    * Linux: ''rescan-scsi'.sh''
  *  restart Tape Driver 
    * Linux : ''/etc/initi.d/lin_tape restart''

=== Persitent Naming fails due to an temporary SCSI-Error ===
  * Linux: reload udev admin rules: ''udevadm trigger''

===== error code=16 =====
==== symptoms  & effects====
<code>ANR 8779E Unable to open drive <NAME>, error number= 16</code>
  * Drives go unavailable on Library Manager, Path to drives go offline
  * Also Error message <code>ANR8779E Unable to open drive <NAME>, error number= 16.
</code>
==== Explanation & Remedy====