Synology's 800GB Enterprise Series M.2 2280 NVMe SSD (PCIe 3.0 x4) built as a read-write cache or storage-pool drive for Synology NAS.
Works with
- Synology NAS with internal M.2 NVMe slots
- Synology E10M20-T1 (M.2 + 10GbE combo card), M2D20 and M2D18 M.2 adapters
- M.2 2280 NVMe PCIe 3.0 x4 host slots; check the Synology compatibility list per NAS model
Is it for you?
Synology's 800GB Enterprise Series M.2 2280 NVMe SSD (PCIe 3.0 x4) built as a read-write cache or storage-pool drive for Synology NAS, with power-loss protection capacitors, a 1,400TB endurance rating (JESD219A enterprise workload) and a 5-year warranty.
Choose it if these matter
- Power-loss protection capacitors safeguard cached data during unexpected shutdowns, which consumer NVMe SSDs used as NAS cache typically lack
- 1,400TB endurance rating and 400,000/70,000 sustained 4K random read/write IOPS sized for 24/7 cache workloads
- Validated by Synology for its own NAS lines and managed in DSM with one-click firmware updates and lifetime analytics
- End-to-end data protection and consistent sustained performance per SNIA steady-state measurement
Skip it if these rule it out
- No Amazon listing is linked from Synology's own product pages for this model, so buying it means searching for the exact model number
- PCIe 3.0 x4 interface only; newer PCIe 4th and 5th generation SSDs have higher sequential throughput, though a NAS cache rarely uses it
- Only usable as a cache or pool drive in Synology systems: internal M.2 slots or the E10M20-T1, M2D20 and M2D18 adapters
- Synology lists this SKU out of stock at its own US store, so availability must be checked at retail
Good for: Homelab · Backups · Media server
Which version should you buy?
Selected package: SNV5420-800G (800GB).
Selected package
SNV5420-800G (800GB)
This pageModel: SNV5420-800G
- What differs
- The 800GB capacity point of the SNV5400 enterprise series with 1,400TB endurance.
- Best for
- Read-write cache or storage pool in a compatible Synology NAS.
Related models and generations
SNV5420-400G (400GB) Model: SNV5420-400G
Half the capacity, 650 MB/s sequential write and 45k/70k IOPS, over 700TB endurance.
Read cache or light write cache.
SNV5420-1600G (1600GB) Model: SNV5420-1600G
Double the capacity, 660k/120k IOPS and over 2,900TB endurance.
Heavy write-cache or all-SSD pools.
Watch out
- SNV3400/SNV3410 is Synology's non-power-loss-protected series; the SNV5400 series described here has power-loss protection
- The maker's own store image file for this SKU is named SNV3410-800G_2025.jpg; it is the image Synology's store returns for SNV5420-800G
- HAT5300 and other Synology 2.5-inch SATA SSDs are a different form factor and interface
Compare with similar models
| Specification |  This oneSNV5420-800G Enterprise Series M.2 NVMe SSD |  Flashstor 6 |  Flashstor 6 Gen2 |
|---|---|---|---|
| Fastest wired port | Not recorded | 2.5 Gbps | 10 Gbps |
| Drive bays | Not recorded | 6 bays | 6 bays |
| RAM | Not recorded | 4 GB | 8 GB |
| Processor | Not recorded | Intel Celeron N5105 | Intel Celeron N5105 |
| Best for | Homelab, Backups, Media server | Backups, Media server, Homelab | Backups, Media server, Homelab |
| Open | View | View |
Full specifications (14)
- Capacity
- 800GB
- Form factor
- M.2 2280
- Interface
- NVMe PCIe 3.0 x4
- Sustained sequential read (128KB, QD32)
- 3,000 MB/s
- Sustained sequential write (128KB, QD32)
- 1,000 MB/s
- Sustained random read (4KB, QD256)
- 400,000 IOPS
- Sustained random write (4KB, QD256)
- 70,000 IOPS
- Endurance (TBW)
- Over 1,400 TB, calculated with the JESD219A enterprise workload
- Power loss protection
- Yes: capacitors safely write cached data to NAND during a power failure
- Power consumption
- 5W active read, 5.5W active write, 2.5W idle (typical)
- Operating temperature
- 0°C to 85°C
- Compatibility
- Synology NAS M.2 slots: internal slots, E10M20-T1, M2D20 and M2D18 adapters
- Firmware updates
- One-click firmware updates and lifetime analytics through DSM 6.2.3+ and 6.2.4+
- Warranty
- 5-year limited warranty (period or TBW, whichever comes first)
Downloads & support
Setup: No drivers needed: the drive presents a standard NVMe interface. Install it in a Synology NAS M.2 slot, create the cache or pool in DSM Storage Manager, and let DSM's one-click firmware update keep it current.
Links go to the manufacturer’s official pages, so you always get the latest, genuine files.
Sources: Synology specifications · synology.com. Photos: Synology · fileres.synology.com. Specifications checked November 8, 2026. Spotted an error? Tell us.