External drive USB disconnects randomly

Hello

I use a Mac mini as a server and include two OWC MiniStacks in annex. The Ministacks are connected via USB3 and underneath the Mac mini. The Ministack in the Middle started disconnecting randomly and I have to turn off and on to get it connected.

The Mac mini is always on and I use the disks USB as server provided the network disks.

I have Seagate Enterprise drives in the world.

I get the following output in the Console:

22/08/16 19:08:19, 000 core [0] USB device 1E91B0B114700000 - reset BOT finished with kIOReturnTimeout.

22/08/16 19:08:19, 000 core [0] USB device 1E91B0B114700000 - will be reset to zero.

22/08/16 19:08:20, 000 core [0] 1533181.822274 PRT7@14700000: AppleUSB30XHCIPort::resetAndCreateDevice: could not create the device after tests (1), disabling port

22/08/16 19:08:21, 000 core [0] USB device 1E91B0B114700000 - fConsecutiveResetCount = 1.

22/08/16 19:08:21, 000 core [0] disk3s2: device / channel is not attached.

22/08/16 19:08:21, 000 core [0] disk3s2: media is prΘsent.

22/08/16 19:08:21, 000 core [0] disk3s2: media is prΘsent.

22/08/16 19:08:21, 000 core [0] disk3s2: media is prΘsent.

22/08/16 19:08:21, 000 core [0] disk3s2: media is prΘsent.

22/08/16 19:08:21, 000 core [0] disk3s2: media is prΘsent.

22/08/16 19:08:21, 000 core [0] disk3s2: media is prΘsent.

22/08/16 19:08:21, 000 core [0] disk3s2: media is prΘsent.

22/08/16 19:08:21, 000 core [0] disk3s2: media is prΘsent.

22/08/16 19:08:21, 000 core [0] disk3s2: media is prΘsent.

22/08/16 19:08:21, 000 core [0] disk3s2: media is prΘsent.

22/08/16 19:08:21, 000 core [0] disk3s2: media is prΘsent.

22/08/16 19:08:21, 000 core [0] disk3s2: media is prΘsent.

22/08/16 19:08:21, 000 core [0] disk3s2: media is prΘsent.

22/08/16 19:08:21, 000 core [0] disk3s2: media is prΘsent.

22/08/16 19:08:21, 000 core [0] disk3s2: media is prΘsent.

...

22/08/16 19:08:21, 000 core [0] disk3s2: media is prΘsent.

22/08/16 19:08:21, 000 core [0] hfs: err 6 reading VH blk (air = 2 database SERVER)

22/08/16 19:08:21, 000 core [0] disk3s2: media is prΘsent.

22/08/16 19:08:21, 000 core [0] hfs: err 6 reading VH blk (air = 2 database SERVER)

22/08/16 19:08:21, 000 core [0] disk3s2: media is prΘsent.

...

22/08/16 19:08:22, 000 core [0] hfs: err 6 reading VH blk (air = 2 database SERVER)

22/08/16 19:08:22, 000 core [0] hfs: disassemble initiated on SERVER 2 DATA on the device disk3s2

22/08/16 19:08:22, 000 core [0] disk3s2: media is prΘsent.

22/08/16 19:08:22, 000 core [0] hfs: err 6 reading VH blk (air = 2 database SERVER)

22/08/16 19:08:22, 000 core [0] disk3s2: media is prΘsent.

22/08/16 19:08:22, 000 core [0] hfs: err 6 reading VH blk (air = 2 database SERVER)

22/08/16 19:08:22, 000 core [0] disk3s2: media is prΘsent.

22/08/16 19:08:22, 000 core [0] jnl: disk3s2: do_jnl_io: strategy err 0 x 6

22/08/16 19:08:22, 000 core [0] jnl: disk3s2: write_journal_header: error writing to the journal header!

22/08/16 19:08:22, recorder disc 775 fseventsd [61]: failed to open the output file DATA Volumes/SERVER 2/.fseventsd/00000000088fc0e6 (no such file or directory). Mount point/Volumes/2/.fseventsd database SERVER

22/08/16 19:08:22, 776 disc fseventsd recorder [61]: failed to open the output file DATA Volumes/SERVER 2/.fseventsd/00000000088fc0e6 (no such file or directory). Mount point/Volumes/2/.fseventsd database SERVER

22/08/16 19:08:23, 085 deleted [695] normalizeUserMountpoint:791 volRoot failed for SERVER/Volumes of DATA 2

22/08/16 19:08:23, 085 deleted [695] _validateVolume:813 unable to normalize the volume: ' / SERVER/Volumes of DATA 2 ", flight: (null)

22/08/16 19:08:26, certadmin 148 [97828] connected to the notification Service

What is going on?

HARD drive fault?

Not pregnant?

Damn Mac mini?

I thank very you much in advance!

He could be sleeping?

Could it be overheating?

Have you tried swapping the cables yet?

Tags: Mac

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