Small and quiet file server with great expandability. It is very easy to set up if you have at least minimal knowledge in computers and networks.
It is friends with the UPS via a USB cable, it can shut down the work according to information from the uninterruptible power supply.
Able to mount disks in its own raid on the fly. Those. after installing the second disk, the system becomes fault-tolerant, but the server's work on the reorganization of the array is not interrupted.
Able to synchronize (Drive application) with other Synology even if there is no white IP.
Enthusiasts can install a bunch of different programs from the manufacturerβs catalog on this crumb: databases, CPM, personal photo catalog, python, antivirus, etc. I donβt even know how smart the device will remain after such a zoo. But the very fact of a fairly large fleet of different programs for many will be the decisive argument when buying. I saw many such NAS and most used only file storage, photo directory, DLNA server, download torrents.
There are several LEDs on the front of the drive that let you know from afar what the NAS is doing and what state it is in.
Potentially, the drive expands well. Although, of course, not in the way that a self-made PC-based system would expand. For us in the office for several years, the basic configuration should be enough. Can only put more disks. I find it inconvenient to sculpt external drives through the connector.
I bothered with storing an archive from a video surveillance camera (you can connect two cameras without reparations, if you need more - buy a license), but as a result I realized that constant recording on disks does not allow them to fall asleep and constantly jerks their heads. Without video, the disks spend about half the time in sleep mode (at night, that's for sure), and with the recording of a video stream (by the way, a very modest one), they no longer fall asleep at all. I took pity on the disks and switched the video recording to a local sd card. But it will be convenient for many to store the video on the file server too.
Able to turn on after a power failure.