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Green M.2 2280 circuit board with gold edge connector and black controller chips

Synology Inc.

Synology Inc. SNV5420-800G M.2 2280 800GB PCI-Express 3.0 x4 enterprise SSD

SKU CH-524A-80HQW

M.2 2280 enterprise SSD with 800GB capacity, PCI-Express 3.0 x4 interface, up to 3000 MBps sequential read and 1400 TBW endurance

  • Form FactorM.2 2280
  • Capacity800GB
  • InterfacePCI-Express 3.0 x4
  • Max Sequential ReadUp to 3000 MBps
  • Max Sequential WriteUp to 1000 MBps
  • 4KB Random ReadUp to 400,000 IOPS
  • Fast sequential reads up to 3000 MBps via PCIe 3.0 x4
  • Sustained 4K random reads up to 660000 IOPS for caching workloads
  • Enterprise endurance rated at 1400 TBW with 3000000 hour MTBF
  • Low idle power of 2.5 W and active draw of 5.0 W read
  • Built for Synology systems with validated interoperability and DSM firmware updates

Synology SNV5420 800GB enterprise M.2 SSD

The Synology SNV5420-800G is an 800GB M.2 2280 enterprise solid-state drive that connects through a PCI-Express 3.0 x4 interface. It is designed for Synology NAS and server platforms that require high sustained random performance and validated firmware integration.

Upgrading from lower-endurance cache drives

This drive replaces consumer or entry-level SSDs that cannot sustain heavy write workloads. The jump is worth it when caching layers demand up to 2,900TBW endurance and consistent 4K random performance of up to 660,000 read and 120,000 write IOPS.

Straightforward M.2 installation

Installation follows the standard M.2 2280 slot procedure with a single screw. The main issues arise when the system lacks PCIe 3.0 x4 electrical wiring or runs firmware that has not been validated through Synology DSM automatic updates.

Highlights

  • Fast sequential reads up to 3000 MBps via PCIe 3.0 x4
  • Sustained 4K random reads up to 660000 IOPS for caching workloads
  • Enterprise endurance rated at 1400 TBW with 3000000 hour MTBF
  • Low idle power of 2.5 W and active draw of 5.0 W read
  • Built for Synology systems with validated interoperability and DSM firmware updates

Specifications

BrandSynology
ModelSNV5420-800G
Form FactorM.2 2280
Capacity800GB
InterfacePCI-Express 3.0 x4
Max Sequential ReadUp to 3000 MBps
Max Sequential WriteUp to 1000 MBps
4KB Random ReadUp to 400,000 IOPS
4KB Random WriteUp to 70,000 IOPS
Terabytes Written (TBW)1400TB
MTBF3,000,000 hours
Power Consumption (Idle)2.5 W
Power Consumption (Active)5.0 W read (Typ.), 5.5 W write (Typ.)
Operating Temperature0°C to 85°C (32°F to 185°F)
Storage Temperature-40°C to 85°C (-40°F to 185°F)
FeaturesHigh Performance
Up to 660,000/120,000 sustained 4K random read/write IOPS
Enterprise-Grade Endurance
Suitable for intensive caching workloads with up to 2,900 TBW
Robust Data Protection
End-to-end data protection ensures data integrity
Lifetime Analytics
Stay on top of drive health with lifetime wear analytics and notifications
Built for Synology Systems
Proven interoperability through rigorous validation and automatic firmware updates through Synology DSM
Height3.50mm
Depth22mm
Weight80mm

Questions about this item

Will the M.2 2280 80mm length fit my motherboard slot?

The drive uses the standard M.2 2280 form factor measuring 22mm wide by 80mm long, so it fits any motherboard or server with an M.2 2280 keyed slot.

Do I need to install a heatsink before slotting the PCIe 3.0 x4 drive into my Synology NAS?

The drive is 3.50mm high and draws up to 5.5W during write operations; most Synology NAS bays include integrated thermal pads, but verify your specific model's clearance before adding a third-party heatsink.

When should I plan to replace the drive based on the 1400TB written endurance rating?

With 1400TB total bytes written and 3,000,000 hours MTBF, replacement timing depends on your workload; monitor lifetime wear analytics in DSM to track remaining endurance and receive notifications before the drive reaches its limit.

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