Mac Mini with fibre connected tape library loses connection
Posted by Andre Kuehnemund on 29 May 2018 16:50
Customer kept getting errors when attempting to label tapes. Mac Mini, OS X 10.12, Quantum Scalar i6 with LTO8 drives. Log showed:

Warning: Drive awst0 with serial no. CXXXXXXX can no longer be accessed by the OS and should be disabled.
Warning: Drive awst1 with serial no. CYYYYYYY can no longer be accessed by the OS and should be disabled.
Notice: Other Job Error: Job error: 'Labeling for pool ArchivePool' (10016)
Cannot open jukebox awjb0 (opening device handle: connection timed out)

Customer discovered the following solution:

"The issue is we’re connected through a Brocade fibre switch. The fix is quite simple: on both the drive and the fibre HBA, we need to fix the speed and topology so they don’t auto-negotiate. Since we’re in a switch, with need PTP topology and fixed 8 Gb/sec speed. Once these are set, the Archiware/Library communication works fine."

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