Synology HAT5320-4T internal hard drive 4 TB 7200 RPM 512 MB 3.5 Serial ATA

Mean time between failures (MTBF): 2000000 h | Storage drive buffer size: 512 MB | Operating relative humidity (H-H): 5 - 90% | HDD sustained transfer rate: 281 MiB/s | Component for: NAS | Storage temperature (T-T): -40 - 70 °C | Width: 101.8 mm | HDD size: 3.5" | Depth: 147 mm | Height: 26.1 mm | HDD capacity: 4 TB | Operating temperature (T-T): 5 - 60 °C | Type: HDD | Hot-swap: Yes | HDD speed: 7200 RPM | Interface: Serial ATA | Weight: 690 g | Workload rate limit: 550 TB/year