Best way to backup root?

Dewdman42 wrote:

I suppose there might be a way to mirror the repo?

apt-mirror will do it.  See

• How I got apt update and install to work (with Debian Jessie retired) | NETGEAR Communities

This mirror.list will mirror all 6.10.x repos, plus some debian ones.

deb-amd64 https://apt.readynas.com/packages/readynasos 6.10.0 updates apps main
deb-amd64 https://apt.readynas.com/packages/readynasos 6.10.1 updates apps main
deb-amd64 https://apt.readynas.com/packages/readynasos 6.10.2 updates apps main
deb-amd64 https://apt.readynas.com/packages/readynasos 6.10.3 updates apps main
deb-amd64 https://apt.readynas.com/packages/readynasos 6.10.4 updates apps main
deb-amd64 https://apt.readynas.com/packages/readynasos 6.10.5 updates apps main
deb-amd64 https://apt.readynas.com/packages/readynasos 6.10.6 updates apps main
deb-amd64 https://apt.readynas.com/packages/readynasos 6.10.7 updates apps main
deb-amd64 https://apt.readynas.com/packages/readynasos 6.10.8 updates apps main
deb-amd64 https://apt.readynas.com/packages/readynasos 6.10.9 updates apps main
deb-amd64 https://apt.readynas.com/packages/readynasos 6.10.10 updates apps main
deb-amd64 http://archive.kernel.org/debian-archive/debian jessie main contrib non-free
deb-amd64 http://archive.kernel.org/debian-archive/debian jessie-backports main contrib non-free
deb-amd64 http://archive.debian.org/debian/ jessie main contrib non-free
deb-amd64 http://archive.debian.org/debian-security jessie/updates main contrib non-free
deb-armel https://apt.readynas.com/packages/readynasos 6.10.0 updates apps main
deb-armel https://apt.readynas.com/packages/readynasos 6.10.1 updates apps main
deb-armel https://apt.readynas.com/packages/readynasos 6.10.2 updates apps main
deb-armel https://apt.readynas.com/packages/readynasos 6.10.3 updates apps main
deb-armel https://apt.readynas.com/packages/readynasos 6.10.4 updates apps main
deb-armel https://apt.readynas.com/packages/readynasos 6.10.5 updates apps main
deb-armel https://apt.readynas.com/packages/readynasos 6.10.6 updates apps main
deb-armel https://apt.readynas.com/packages/readynasos 6.10.7 updates apps main
deb-armel https://apt.readynas.com/packages/readynasos 6.10.8 updates apps main
deb-armel https://apt.readynas.com/packages/readynasos 6.10.9 updates apps main
deb-armel https://apt.readynas.com/packages/readynasos 6.10.10 updates apps main
deb-armel http://archive.kernel.org/debian-archive/debian jessie main contrib non-free
deb-armel http://archive.kernel.org/debian-archive/debian jessie-backports main contrib non-free
deb-armel http://archive.debian.org/debian/ jessie main contrib non-free
deb-armel http://archive.debian.org/debian-security jessie/updates main contrib non-free
deb-armhf https://apt.readynas.com/packages/readynasos 6.10.0 updates apps main
deb-armhf https://apt.readynas.com/packages/readynasos 6.10.1 updates apps main
deb-armhf https://apt.readynas.com/packages/readynasos 6.10.2 updates apps main
deb-armhf https://apt.readynas.com/packages/readynasos 6.10.3 updates apps main
deb-armhf https://apt.readynas.com/packages/readynasos 6.10.4 updates apps main
deb-armhf https://apt.readynas.com/packages/readynasos 6.10.5 updates apps main
deb-armhf https://apt.readynas.com/packages/readynasos 6.10.6 updates apps main
deb-armhf https://apt.readynas.com/packages/readynasos 6.10.7 updates apps main
deb-armhf https://apt.readynas.com/packages/readynasos 6.10.8 updates apps main
deb-armhf https://apt.readynas.com/packages/readynasos 6.10.9 updates apps main
deb-armhf https://apt.readynas.com/packages/readynasos 6.10.10 updates apps main
deb-armhf http://archive.kernel.org/debian-archive/debian jessie main contrib non-free
deb-armhf http://archive.kernel.org/debian-archive/debian jessie-backports main contrib non-free
deb-armhf http://archive.debian.org/debian/ jessie main contrib non-free
deb-armhf http://archive.debian.org/debian-security jessie/updates main contrib non-free

Dewdman42 wrote:

I am wondering what is the best or a good way to backup the root partition to another readynas backup volume,

You can remount it as /mnt and then copy /mnt to a folder on the data volume.  It is important to remount it (and copy the new mount point), since the data volume is mounted to //.