I'll give that a shot, but both machines are running Linux.

Thanks
Phil.


On 24/11/2025 16:50, Josh Fisher via Bacula-users wrote:
In both the FD and SD config files, set Maximum Network Buffer Size = 32768. The default size of 64k is known to cause this issue in Windows, or at least certain versions of Windows using certain NICs. You will need to restart bacula-sd on the server and bacula-fd on the Windows PC before testing.


On 11/21/25 09:55, Phil Pemberton via Bacula-users wrote:
Hi all,

I've been using Bacula to back up my NAS for some time, and it's been working well. I see effective backup rates of about 30MB/s all told (100MB+ unspooling from SSD to tape, maxing out the LTO6 drive).

Unfortunately when I added my desktop PC to the backup cycle, I found that the effective rate dropped like a rock, to single-digit megabytes per seconds.

The machines are both fairly fast -- the desktop machine (backup source running the FD) is a Ryzen 5 5600X, and the server (with the SAS SSD and tape drive) is an Intel Core i5-9400. The network is gigabit end-to-end, and the transfer rates I'm seeing are very poor. Other applications taking the same path are much faster.

Both systems are running Debian derivatives -- the desktop runs Mint with Bacula 13.0.4, and the server runs Ubuntu 24.04 with the same version of Bacula.

Is there anything I can do to improve performance backing up over the network, before I resort to a nightly Rsync from the workstation to the server and backing up from there?

Thanks.



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Phil.
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