Question about DS220j - 508026

The CPU and more RAM (better on the DS220+)and expansion with SSDs for Read/Write cache (only available on the DS220+). Also different is the long term support plus you can remove the disks using hotplug trays. Disks are locked with screws in the DS220j. I advise not to invest in anything with j in the name, these NAS are not good options for NAS, they are very limited in regards to anything.

I strongly

to advise in investing in a 4 bay NAS, expandability is much better plus you have the possibility to also run the NAS with better hardware redundancy and you can also use smaller drives that cost less to expand. With a 2 bay NAS you are forced to buy two simiar sized disks and if you want to expand at a later time, you are forced to replace two drives. When you start with two drives on a a 4Bay NAS, you can then expand by adding additional drives and you can then convert a RAID1 mirroring config to a Synology Hybrid RAID redundancy config.

A great and cost efficient NAS option with 4 bay would be the DS418, it has a quad core CPU and 2GB of RAM (cannot be expanded, but it is less expensive than the even more powerful DS420+)