I found this in /var/log/messages:
Jul 27 03:59:46 localhost kernel: sd 3:0:1:0: [sdd] SCSI device reset on scsi3:1
I don't see any other error logs to indicate why the reset occurred.
How do I determine the cause of this SCSI device reset?
Note: I'm running Linux CentOS 7 as a virtual machine on top of VMware's ESX hypervisor.