08-26-2022, 01:24 PM
You have two options to expand. You can either get an expansion unit (or even a second NAS of any size) or replace a couple of existing drives.
If you get an expansion, you can add just one drive to gain more space. The rest of the bays can stay empty.
If you decide to replace existing drives, you will need to replace 2 drives to gain more storage space. Later one you can replace a single drive. You can play with this calculator here https://www.synology.com/en-uk/support/R...TB|16%20TB
I hope this helps.
If you get an expansion, you can add just one drive to gain more space. The rest of the bays can stay empty.
If you decide to replace existing drives, you will need to replace 2 drives to gain more storage space. Later one you can replace a single drive. You can play with this calculator here https://www.synology.com/en-uk/support/R...TB|16%20TB
I hope this helps.