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Synology SAT5221-1920G

Synology SAT5221 series 2.5-inch enterprise SATA SSD, angled view of the bare drive on a light background

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Synology SAT5221-1920G

Capacity:
1.92 TB
Form factor:
2.5" 7 mm
Interface:
SATA 6 Gb/s

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Package details

Model: SAT5221-1920G

SAT5221-1920G, single drive

Condition:
Confirm new or reconditioned on the listing
Quantity:
Confirm package quantity on the listing

Important limit: SATA caps sustained transfer at about 500 MB/s, far below NVMe alternatives

How many units?

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Specifications checked November 5, 2026. Full product details

Synology SAT5221 1.92 TB Enterprise Series 2.5" SATA SSD (SAT5221-1920G)

A 1.92 TB enterprise SATA SSD in the 2.5-inch 7 mm format, validated for Synology NAS with power-loss protection and a 3,500 TBW endurance rating.

Why people pick it

  • 3,500 TBW endurance rating for 24/7 workloads, far beyond consumer SSDs
  • Power-loss protection circuit prevents data corruption during unexpected shutdowns
  • Validated end-to-end on Synology systems, with lifetime analytics and one-click firmware updates in DSM
  • End-to-end data protection over the whole transfer path

Know before you buy

  • SATA caps sustained transfer at about 500 MB/s, far below NVMe alternatives
  • Priced per terabyte well above consumer SATA SSDs
  • 1.92 TB fits fewer media libraries than the hard drives it usually caches

Full specifications

Capacity1.92 TB
Form factor2.5" 7 mm
InterfaceSATA 6 Gb/s
Sustained sequential read (128 KB, QD32)500 MB/s
Sustained sequential write (128 KB, QD32)500 MB/s
Sustained random read (4 KB, QD32)90,000 IOPS
Sustained random write (4 KB, QD32)30,000 IOPS
Endurance (TBW)>3,500 TB (JESD219A enterprise workload)
Power loss protectionDedicated capacitors flush data-in-flight to NAND during a power loss
Power consumption4.5 W active read, 5 W active write, 1.2 W idle (typical)
Operating temperature0°C to 70°C (32°F to 158°F)
Warranty5-year limited warranty, ending at warranty expiry or endurance usage, whichever comes first
SeriesSAT5221 capacities: 480 GB, 960 GB, 1.92 TB, 3.84 TB

From manufacturer documentation, checked November 5, 2026. Spotted an error? Tell us.

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