Recently one of my main storage devices got to about 78% capacity of the available 10.92 TB. Its mostly filled with my TV Shows & Personal Files. I have another Synology Device as well which has about 21.84 TB capacity which is a back up for everything I have, but the main one is the DS1511+. So I wanted to expand it and purchase the DX510 which is an expansion unit, and I bought 5 Hard Drives to fill it right away, the capacity being 3TB (2.73 TB Actual) per drive so it doubles the capacity of the DS1511+.
One thing to keep in mind is the connection is an eSata with screws so it doesn’t come out at all, if it does then you lose the Volume on your Synology Device so its very important to keep it screwed it. Once you plug in all the hardware and connect it to the DS1511+, the DX510 will power up with the DS1511+ and all controls will be made through the DSM software, I think it stands for the Desktop Synology Manager.
Configuring is simple, you have two choices, Expansion of the Volume or Creating a new Volume. Also there is a limit to a Volume, it will max out at 16 TB, so I decided to create another Volume with Synology Hybrid Raid I got a Volume space of 10.92 TB so a total of 21.84 TB on the Synology Device. It took 20 minutes to setup the device physically, then to create the volume and do a fully check on the hard drives it took 24 hours, so it can check every sector of every drive on the new expansion unit. Well worth the wait to make sure everything is working smoothly first time around. You can move your Shares to different volumes so give yourself space but when you access it through explorer it looks like as its just one big space. Synology does make everything easier and in reality it is an excellent product.
If you are looking for a high end storage device that does it all and it is simple to setup yet you have a lot of options for customization I would go with the DS1812+ but if you are looking for something simple for the home the DS1512+ is perfect.
Check out Cameoo in Kuwait they are even cheaper then Amazon which is extremely surprising and refreshing. Forget their website, just call them and ask the Synology unit you are looking for, its bound to be cheaper.