My ex bought me a 4-bay Synology Diskstation DS411 a few years ago. He set it up on the WiFi, with a LAN connection to the media player. Now I don't have it set up on the WiFi because I'm living out in the sticks, and the Internet here is a little wonky. I still use it mainly to stream videos through the media player, and I occasionally disconnect the LAN from the media player to connect to my laptop for moving and backing up files.
Are there utilities I should be using to clean and/or defrag the RAID drives? Obviously, I know very little about it besides moving and accessing files. I am a multimedia designer and photographer with a ton of files - I have 6 TB with only 780 GB free. If I put all my graphics files on there, I would have no free space, so maintaining the health of the system - as well as optimizing space - is very important. I noticed a huge discrepancy between file size and size on disk, like a back up of library files for my 3D software is 44.1 GB but the size on disk is 81.5 GB. Is this normal for RAID, or am I not maintaining it correctly? I installed the Synology Assistant, but I see nothing in there as far as system utilities.