NAS Memory – Synology, QNAP, ASUSTOR & TerraMaster Upgrades

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NAS memory upgrades matched to the exact model of your network-attached storage system. Every listing on this page is designed for a specific Synology, QNAP, ASUSTOR, TerraMaster, UGREEN or Thinkmate NAS, using the memory type, speed and capacity the NAS maker specifies for it. More memory lets a NAS cache more data and run more at once: virtual machines, containers, surveillance, Plex and other media apps, and SSD caching. The fastest way to find yours is to type the model number, such as DS923+, TS-464 or AS6704T, into the search bar at the top of the page.

Find memory by NAS brand

Synology — DiskStation, RackStation, FlashStation, SA, UC, HD and ActiveProtect models, from the DS224+ to the RS11626xs+. Browse by series: DiskStation, RackStation, FlashStation, SA series and UC series. You can also look up a module by its Synology part number (D4ES03, D4ES01, D4ECSO, D4EU02, D4ER02 and others), or use our Synology NAS memory guide to see the memory type and maximum memory for each model.

QNAP — TS, TVS, TS-h, TVS-h and QuCPE models, including the TS-464, TS-873A, TS-h973AX and TVS-h874 and the rackmount XU and eU series: QNAP NAS memory upgrades. To search by QNAP module part number (RAM-8GDR4ECK0-SO-3200 and others), use the QNAP part number cross-reference.

ASUSTOR — LOCKERSTOR, FLASHSTOR, NIMBUSTOR and the AS-series: ASUSTOR NAS memory upgrades, or search by ASUSTOR part number.

TerraMaster — F2, F4, F5, T6, T9 and T12 desktop models and the U-series rackmounts: TerraMaster NAS memory upgrades, or search by TerraMaster part number.

UGREEN — NASync DXP2800, DXP4800, DXP4800 Plus, DXP6800 Pro and DXP8800 Plus: UGREEN NASync memory upgrades.

Which type of memory does my NAS use?

NAS systems use five main types of memory, and they are not interchangeable:

Non-ECC SODIMM — the laptop-size module used in entry-level and home NAS, often alongside memory soldered to the board. It comes in DDR3, DDR4 and DDR5. See DDR4 non-ECC SODIMM.
ECC SODIMM — the same compact size with error correction, used by most current Synology Plus models, many QNAP and ASUSTOR models, and AMD Ryzen Embedded NAS. See DDR4 ECC SODIMM and DDR5 ECC SODIMM.
Non-ECC UDIMM — the full-size desktop module used in some rackmount and older desktop NAS models.
ECC UDIMM — the full-size unbuffered ECC module used in mid-range rackmounts, Intel Xeon E models and dual-controller units. See DDR4 ECC UDIMM.
ECC RDIMM — registered server memory used in all-flash arrays and high-end rackmount NAS with Intel Xeon or AMD EPYC processors. See DDR4 RDIMM.

Each listing on this page shows the exact type, speed and capacity your model takes, from single 4GB modules up to 128GB modules and multi-module kits.

How to choose NAS memory

Start with the maximum memory your NAS maker specifies. Many compact NAS models have memory soldered to the board and one open slot, so the maximum is the onboard memory plus a single module. On models with two or more slots, use matching modules in every slot so the system can run dual-channel. If your NAS was designed for ECC memory, use ECC modules. On dual-controller systems, install the same memory in both controllers. A faster module runs at the speed the NAS processor supports, which is normal. Not sure which module fits? Send us your NAS model or the part number of the module you have installed, and we will confirm the right module before you order.

Buying NAS memory direct from NEMIX RAM

NEMIX RAM is a US-based server memory specialist, in business since 1993. Every module is researched, matched, and compatibility-tested by NEMIX RAM, is JEDEC-compliant, and is backed by a lifetime warranty. Purchase orders, net terms and volume pricing are available for businesses, MSPs, resellers, government and education buyers. Request a quote for multiple NAS units or a fleet refresh.

Also searched as: NAS RAM, NAS memory upgrade, Synology RAM, QNAP RAM, ASUSTOR RAM, TerraMaster RAM, UGREEN NAS RAM, network storage memory, ECC NAS memory.