Written by Steven

How do you choose RAM for your Synology NAS?

Is the RAM of your NAS malfunctioning or do you find it too slow? It's time for an upgrade. You can't replace or expand your RAM with every NAS. In this article, we'll tell you which models are suitable for this and which type of RAM you need for your Synology NAS.

Choosing RAM

To find out which RAM you want for your Synology NAS, we'll ask the following questions:

  1. Is the RAM of your NAS replaceable?
  2. What kind of memory is currently in your NAS?
  3. Which type of RAM do you need?
  4. Do you want to expand or replace the memory?
  5. Do you want to upgrade the RAM officially or unofficially?

Is the RAM of your NAS replaceable?

Synology DS218+ replace or expand RAM

What is possible?

You can expand or replace the RAM of the following models:

  • Synology DS218+
  • Synology DS918+
  • Synology DS718+
  • Synology DS1019+
  • Synology DS418play
  • Synology DS1819+
  • Synology DS1618+
  • Synology DS3018xs
  • Synology DS2419+
  • Synology DS620slim
  • Synology DS1817
  • Synology DS1817+
  • Synology DS1517+
Synology DS218 Play don't replace RAM

What isn't possible?

Unfortunately, you can't replace or upgrade the RAM of the following Synology models:

  • Synology DS218play
  • Synology DS220j
  • Synology DS218j
  • Synology DS120j
  • Synology DS118
  • Synology DS420j
  • Synology DS218
  • Synology DS418
  • Synology DS419slim

What kind of memory is currently in your NAS?

Check RAM in the Synology Info Center

Before you replace or upgrade the RAM, you first need to know which type of RAM, how much RAM, and how many memory slots your NAS has. The table below lists this information for all upgradeable Synology DiskStations from 2017 and later. Do you have an older NAS? You can find this on the Synology website. You can also find out how much RAM your NAS has in gigabytes via the DiskStation manager of your NAS. Go to the Synology Control Panel and click on the Info Center.

Tip: in the last column 'Synology RAM', you can see which type of RAM you officially need for an upgrade.

Compatible Synology DiskStations (2017 and newer)

Model Incl. RAM (SO-)DIMM Max. RAM Locks Synology RAM
Synology DS620slim 1x 2GB DDR3L SO-DIMM 6GB 2 D3NS1866L-4G
Synology DS1019+ 2x 4GB DDR3L SO-DIMM 8GB 2 D3NS1866L-4G
Synology DS1819+ 1x 4GB DDR4 SO-DIMM 32GB 2 D4ECSO-2666-16G or D4NESO-2666-4G
Synology DS2419+ 1x 4GB DDR4 SO-DIMM 32GB 2 D4ECSO-2666-16G or D4NESO-2666-4G
Synology DS218+ 1x 2GB DDR3L SO-DIMM 6GB 2 D3NS1866L-4G
Synology DS418play 1x 2GB DDR3L SO-DIMM 6GB 2 D3NS1866L-4G
Synology DS718+ 1x 2GB DDR3L SO-DIMM 6GB 2 D3NS1866L-4G
Synology DS918+ 1x 4GB DDR3L SO-DIMM 8GB 2 D3NS1866L-4G
Synology DS1618+ 1x 4GB DDR4 SO-DIMM 32GB 2 D4ECSO-2666-16G or D4NESO-2666-4G
Synology DS3018xs 1x 8GB DDR4 SO-DIMM 32GB 2 D4ECSO-2666-16G
Synology DS1517+ 2 or 8GB DDR3L SO-DIMM 16GB 2 RAM1600DDR3L-4GBx2 of RAM1600DDR3L-8GBx2
Synology DS1817 1x 4GB DDR3L SO-DIMM 8GB 2 RAM1600DDR3-4G
Synology DS1817+ 2 or 8GB DDR3L SO-DIMM 16GB 2 RAM1600DDR3L-4GBx2 or RAM1600DDR3L-8GBx2

What type of RAM do you need?

DDR3, DDR3L, or DDR4 memory

In the second column of the table above you can see which type of RAM you need. Choose the type of RAM, which starts with 'DDR':

  • DDR3 RAM: oldest and slowest standard, only works with a DDR3 memory slot.
  • DDR3L RAM: faster and more energy-efficient than DDR3, works with DDR3 and DDR3L slots.
  • DDR4 RAM: latest and fastest standard, only works with a DDR4 memory slot.

Check which DIMM type you need in the third column. Almost every Synology DiskStation uses the small SO-DIMM modules. With expensive NAS models for business, you use the larger DIMM modules.

Do you want to expand or replace the RAM?

new or extra RAM

If the RAM of your NAS is malfunctioning, we recommend that you replace it with exactly the same Synology RAM module. This way, you can be sure it will work as before. Is your RAM still working properly, but you want it to be a bit faster? Place a RAM module with more gigabytes in your NAS or expand the memory with a second RAM module. To make sure it works optimally, the second should be the same as the first. Or buy two new identical RAM modules.

Do you want to upgrade the RAM officially or unofficially?

Official Synology RAM or unofficial

If you want to upgrade the RAM of your NAS, you have two options:

  • Officially. An official upgrade means replacing the RAM with a module of the same brand. Synology, in this case. You can be sure \ the memory works perfectly with your NAS. Your warranty is also still valid for the official channels. In the last column of the table, you can see which Synology RAM you need.
  • Unofficially. Upgrading unofficially means using a different brand of RAM than Synology. You'll lose part of the warranty, which means that you have to pay for any possible repairs yourself. Unofficial RAM is often cheaper, but it's deductible so we don't recommend it.

Do you have a business NAS?

Business NAS replace RAM

If you have a high-end or business Synology device such as a Rackmount NAS (RS) or FlashStation (FS), you won't find your model in this article. Check the manual of your NAS or the Compatibility List from Synology instead.

Steven
Article by:
Steven NAS Expert.


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