Synology HDD 4TB 3.5 SATA III HAT5320-4T

Synology HDD 4TB 3.5” Enterprise SATA 6GB/s, 7200 rpm, Max. Sustained Data Transfer 281MB/s, Cache Buffer 512MB, 2.0 million hours MTBF, Low power consumption: 3.49W active idle / 7.29W operating, 5 years warranty