{"id":1914,"date":"2022-08-10T01:42:05","date_gmt":"2022-08-09T23:42:05","guid":{"rendered":"https:\/\/blog.zitnik.si\/?p=1914"},"modified":"2022-08-10T01:44:01","modified_gmt":"2022-08-09T23:44:01","slug":"synology-rsync-backup-to-a-linux-server","status":"publish","type":"post","link":"https:\/\/blog.zitnik.si\/?p=1914","title":{"rendered":"Synology RSYNC backup to a Linux server"},"content":{"rendered":"\n

Last year I bought a Synology DS1520+. I am very satisfied with it (will have a separate post on that in the near future), having more than 40TB drives in it. As all my data is there, I wanted to have a remote backup on a Linux machine via rsync<\/em>.<\/p>\n\n\n

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Dell PowerEdge R840<\/figcaption><\/figure>\n<\/div>\n\n\n

At the faculty (where I work), server room of our lab was being cleaned and two old machines were meant to be dumped away. One very old server and a bit newer Dell PowerEdge R840. The latter featured Intel Xeon, 8GBs of RAM and two SAS controllers. One of the SAS controller was attached to 4 HDD slots and there were additional 4 SATA controllers on a motherboard. The only downside was the loudness of the machine but that would not be a problem as the server would be powered on only when backing up. <\/p>\n\n\n\n

The older server (an 2001 year IBM machine) also featured a SAS rack for 4 SATA drives. <\/p>\n\n\n\n

I took some time, installed another SAS rack into the server and connected additional two SATA drives directly to motherboard. Of course I needed to solder some power cables to existing power supply. As I used old drives, the total installation of 10 HDD drives got me around 5.5 TBs of space (enough for my current backup needs). I also manages to fix all the internals in the server and closed the chassis. <\/p>\n\n\n\n

I installed an Ubuntu server, setup LVM (so that all the drives represented one logical drive), and setup basic rsync server.<\/p>\n\n\n\n

Backing up from a Synology<\/strong><\/p>\n\n\n\n

My first backup was done in local network and it needed quite some time for cca. 4 TB of data. Then I moved the machine to a remote location. Of course the idea was to set up rsync via SSH. Everything was great until I turned SSH on.<\/p>\n\n\n\n

I could not find the problem in configuration to enable rsync via SSH. I read many forums, posts related to the problem (mostly people were using Synology as a target and not the way I used it), … I managed to find out that rsync configuration must be user-specific, but the usage of full path inspired me by warmestrobot’s blog<\/a>. The solved problems were the following:<\/p>\n\n\n\n

Rsync configuration<\/strong> (problem 1)<\/p>\n\n\n\n

I configured fstab file to automatically mount shared volume I was planning to use for backup. Then I configured a general rsnycd.conf file. And here was the problem!<\/em><\/p>\n\n\n\n

When Synology connects to you rsnyc-enabled server via SSH, it launches a new rsync daemon as the SSH logged-in user. Therefore rsync daemon does not need to be running and rsyncd.conf must be in the home folder of the SSH user<\/em><\/strong>.<\/p>\n\n\n\n

Synology DSM UI settings<\/strong> (problem 2)<\/p>\n\n\n\n

In the Synology Hyper Backup app you define the specifics of a backup task, such as what to backup, how often, destination path, credentials, … When enabling transfer encryption<\/em> (i.e., SSH), the path in the Module must be absolute path at the target machine<\/em><\/strong> (e.g., in my case was \/home\/slavkoz\/backups<\/em>, where my backup volume was mounted).<\/p>\n\n\n\n

Finally, after successful setup, timed powering on and turning of the machine, everything was working.<\/p>\n\n\n\n

Still, currently I do not use that server as backup tasks are (a) too slow, (b) server is too loud to be running two days in a row per week, and (c) it uses a lot of power. Therefore I will buy another Synology just for the remote location.<\/p>\n

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Last year I bought a Synology DS1520+. I am very satisfied with it (will have a separate post on that in the near future), having more than 40TB drives in it. As all my data is there, I wanted to have a remote backup on a Linux machine via rsync.…<\/p>\n

Continue readingSynology RSYNC backup to a Linux server<\/span><\/a><\/div>\n","protected":false},"author":1,"featured_media":1916,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[13,30],"tags":[47,44,46],"class_list":["post-1914","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-computer-engineering","category-free-time","tag-backup","tag-hobby-projects","tag-synology","entry"],"_links":{"self":[{"href":"https:\/\/blog.zitnik.si\/index.php?rest_route=\/wp\/v2\/posts\/1914","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.zitnik.si\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.zitnik.si\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.zitnik.si\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.zitnik.si\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1914"}],"version-history":[{"count":2,"href":"https:\/\/blog.zitnik.si\/index.php?rest_route=\/wp\/v2\/posts\/1914\/revisions"}],"predecessor-version":[{"id":1918,"href":"https:\/\/blog.zitnik.si\/index.php?rest_route=\/wp\/v2\/posts\/1914\/revisions\/1918"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blog.zitnik.si\/index.php?rest_route=\/wp\/v2\/media\/1916"}],"wp:attachment":[{"href":"https:\/\/blog.zitnik.si\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1914"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.zitnik.si\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1914"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.zitnik.si\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1914"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}