SAT5221-960G Synology 960GB SATA 6Gbps 2.5-inch Internal Solid State Drive (SSD)

SAT5221-960G Overview

The Synology SAT5221‑960G is an enterprise‑grade internal solid‑state drive (SSD) with a 960 GB capacity, designed for systems that use the SATA 6 Gb/s (SATA III) interface and a 2.5‑inch, 7 mm form factor. It’s part of Synology’s SAT5221 series, which is engineered for 24×7 operation, reliability, and consistent performance in NAS, server, and storage environments.
This SSD delivers SATA‑level speeds, with sustained sequential read and write performance around 500 MB/s, which is close to the maximum possible for the SATA interface. Random performance is also well‑balanced for enterprise use, with about 90,000 IOPS for random reads and around 30,000 IOPS for random writes—helping improve responsiveness for many small‑block access patterns common in business workloads.