Cyber Backup Consistently Failing Recently
I am at my wits end troubleshooting this.
Issue: Backups are failing for 3 Linux cPanel servers at one location all going to the same backup storage server with the error "Backup has failed due to errors on storage side or a network connectivity issue."
Setup: The backup storage server (abgw) that hosts the backups has 8 different servers linked to it out of which backups are only failing for 3 servers. The storage server and the servers that are to be backed up are all in a local network within the same datacenter with no firewall between them.
Troubleshooting: Extensive troubleshooting has been done over a period of 2 weeks. The connectivity has been determined to be ok with using the Connectivity Verification Tool from Acronis, which tested and showed no connectivity issues between any components.
The backup starts and backup size also goes on increasing however it fails at random intervals sometimes at 34%, sometimes at 40 or even at 80%.
Completely uninstalling the agent and removing the server and adding it back again has also been tried, but it resulted in the same issue. Deleting all old backups and creating a full new backup has also been tested with no success.
Both servers can reach each other and the Acronis cloud portal without any issues. ABGW and Agent are both updated to the most latest version. The problem started occurring 2 weeks ago with backups running flawlessly for over 3 months prior to that.
All logs are attached below.