Gracefully restart RN104?

Ah, you use snapshots. This is why the value is higher as when files are defragmented the CoW link between the original and snapshot of the file is broken.

So it looks like the defragmentation did work.

You say that like I probably shouldn't use snapshots. Are they worth the effort or should I turn them off?

Depends on what you are using the NAS for. They can be useful but on the 100 series I would be selective as to which shares to use them with.

What kind of data do you store on the NAS?

Documents, movies, MP3s, and my astrophotography data/family photos. I suppose if I was going to selectively use it, the astronomy data and family photos is the most important to me. I'll turn it off for the rest of the shares.

Thank you!
Chris

mdgm and I don't quite agree on the "limit snapshots on the RN100" concept. It seems to me that the impact of snapshots on file system fragmentation is the same for all NAS models. I think mdgm's view is that performance impact of the fragmentation (and the defrag) is worse on the lower performing NAS, He could well be right - I'm just not seeing it quite the same way.

Where we agree is

-The value of snapshots is that you can restore older versions or accidentally deleted files.
-The challenges arise on files that are modified frequently - if you are adding/deleting/moving entire files, CoW doesn't create more fragmentation.
-That you do need to be thoughtful about snapshot settings (and take them into account as you organize your data).

Its not so much about which files are most important, its more about what you do with them. For shares where you add files, but don't usually edit them or delete them, snapshots do no harm, and could help if you accidentally delete things - so (in my opinion) you might as well enable them.

For shares where the files are heavily modified (torrent downloads, SQL databases, documents that are continually revised), you should keep snapshots off, and find some other way to archive old versions. Daily frontview backup to a second share is one way.

For shares where a lot of files are regularly deleted, snapshots quickly take a lot of disk space. One example is a folder of not-yet-watched videos, where you delete then as you watch them, For those shares you should probably keep them off, since if the volume becomes very full then performance certainly suffers a lot, and the NAS will begin automatically deleting snapshots anyway.