The assembly is simple: you secure your HDDs on the frames and insert them into the NAS. We have some apprehensions about this fastening as each frame is only held by a SATA connector and a small plastic lock. On the other hand, most users won’t be reinstalling their HDDs too often.
Then you connect the NAS to your network and launch the DSAssistant tool on a computer from the local network segment. DSAssistant works without installation and is actually needed only once for initializing the NAS. Afterwards, you can update the NAS’s firmware via its web interface.
We used firmware version 0845 for our tests but the functionality will be described basing on the recently released version 0942.
The capabilities and settings are not specific to the DS409slim, of course. Synology provides almost the same firmware for all its models. There can only be some differences concerning specific parameters depending on performance (e.g. the maximum number of simultaneous downloads or IP video cameras). So, some configuration related issues have been omitted in this review. If you still have any questions, you can refer to our recent review of the DS509+. You will find more screenshots there, too.
The NAS’s web-interface, pretty and handy, is based on Ajax. It is localized in a few languages and supports SSL with a self-signed certificate. By default, the interface works on port 5000 (5001 for https) but you can change it to any other port. For security reasons the user is automatically logged off the web-interface after being idle for a certain period of time.