articles/2025/Rsync-backup-to-Synology-Diskstation.html


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<h2>Rsync backup to Synology Diskstation</h2>
<h3>2025-03-25</h3>
<h4>This could change but it works for me.</h4> 
<p>My Diskstation isn't always on, so I run this from the command line rather than cron.</p>
<p>To avoid errors devices and links are skipped, permissions, times, group and owner are not written and files are compared by size only.</p>
<p>Ssh is configured with ssh-copy-id for passwordless access and host:port details in .ssh/config</p>
<h3>Note: I set the rsync options on the diskstation but had to chmod 755 my
diskstation's home folder before passwordless ssh worked</h3>
<code>#!/bin/sh

  rsync -r --no-D --no-t --no-o --no-g --no-p \
  --size-only \
  --delete \
  --update \
  --exclude .cache/ \
  --exclude Downloads/ \
  --exclude tmp/ \
  --exclude .local/share/Trash/ \
  --exclude .wine \
  --info=progress2 \
  --stats \
  /home/philip  philip@dsm:backup-X220

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