I’ve been trying to use Duplicati (MacOS Mojave 10.14.2, 126.96.36.199_beta_2018-11-28) to make a backup of about 3.5TB. The source is a RAID thunderbolt array, the destination is a USB-connected 10TB SATA disk (trying to do the first backup locally, and then transport the 10TB disk to a remote server and do all future [incremental] backups to that off-site server).
The backup takes several days to complete, but it eventually backs up all files – and then errors out. I.e., when it finshed backing up all (or nearly all?) files, there was a red error box on the Duplicati home page about there being unclaimed files on the remote system… or something like that. I unfortunately did not screen capture the message.
The kicker is that Duplicati still says “Last successful backup: Never” for this backup.
That being said, on the 10TB drive, I see 138,132 *.aes files.
There are no errors shown in the Duplicati backup log, but I do notice that the very last file was put about an hour after the previous file:
Dec 19, 2018 1:15 PM: put duplicati-bd00aac9a48a2490da9160ffce13d9b8e.dblock.zip.aes Dec 19, 2018 12:04 PM: put duplicati-ic495f6f83dd94c7291a50a9b0d1bff82.dindex.zip.aes
which is odd, because all previous “puts” were pretty much one after the other (i.e., many per minute).
I tried to “Create error report…” but Duplicati simply displays “Creating bug report…” for hours in the top banner, and nothing seems to happen.
Are there known issues with creating very large backups (on the order of ~3.5TB) and Duplicati 2.0.x?