Thanks for trying to help. ;-)
You are right - USB 3.0 w/ hub are potential source of trouble.
On the other hand - the backup processes are working fine every day.
Except for trying to access to this (shown in protocol):Macrium Reflect Log
|Failed: Failed to load 'R:\WinDRichy\3F1E12249A56ABE1-00-00.mrbak' MD5 Checksum Failure - file is corrupt|
Why MR is using that constantly?
This file is of Oct 9th, 2015.
51 incrementals were created since this date,
named like '3F1E12249A56ABE1-18-18.mrbak' to '3F1E12249A56ABE1-59-59.mrbak'
On Dec 5th, 2015, I created a Full Backup manually
It is named '8886CA047BAA4195
7 new incrementals were created till today,
named '8886CA047BAA4195-01-01.mrbak' to '8886CA047BAA4195-07-07.mrbak'.
But still the above message in red will be shown in everyday's protocol.