Synology HAT3300-4T Plus Series 4TB NAS HDD, 3.5-Inch SATA 6GB/s, 5400 RPM, 256MB Cache, 202MB/s, CMR, 180TB/Year Workload, 24/7 Operation

EXPERT FEATURES 4TB NAS-Ready Storage : Add 4TB of dedicated storage to a compatible NAS for shared files, photos, media libraries, and backups. This is a bare internal drive, not a complete NAS or USB external drive. 24/7 Storage Design : Engineered for always-on Synology storage systems and multi-user workloads, with extensive manufacturer compatibility and stress validation. 100% CMR Recording : Conventional Magnetic Recording (CMR) supports consistent sustained write behavior, including NAS and RAID workloads. SATA 6Gb/s Interface : Uses a standard internal SATA 6Gb/s data connection in a 3.5-inch drive bay. The host must provide compatible SATA data and power connections. 5400 RPM / 256MB Cache : Combines 5400 RPM rotational speed with 256MB cache, tuned for NAS storage duties rather than NVMe SSD-like performance. Up to 202MB/s Sustained Transfer : Synology specifies a typical maximum sustained data transfer speed of 202MB/s; actual results depend on workload, enclosure, RAID mode, and network. 180TB/Year Workload Rating : Rated for up to 180TB per year of host data reads, writes, and verification commands in supported operating conditions. 1 Million-Hour MTBF : Manufacturer-rated mean time between failures of 1,000,000 hours is a statistical fleet measure, not a predicted lifetime of an individual drive. DSM Firmware Integration : Firmware can be updated through Synology DiskStation Manager on supported Synology NAS models, avoiding drive removal for eligible updates. Efficient Typical Power Draw : Rated at 3.96W active idle and 4.85W during a random 4KB read/write workload, with consumption varying by system. EXPERT SPECS Specification HAT3300-4T Details Brand Synology Series Plus Series Exact Model / SKU HAT3300-4T Product Type Internal NAS Hard Disk Drive (HDD) Capacity 4TB (manufacturer decimal capacity) Form Factor 3.5 inches Recording Technology Conventional Magnetic Recording (CMR) Drive Design Air-filled Host Interface SATA 6Gb/s Sector Format 512e Rotational Speed 5400 RPM Cache 256MB Maximum Sustained Transfer Speed (Typical) 202MB/s Workload Rating 180TB/year (data read/write/verified) MTBF 1,000,000 hours (statistical rating) Intended Duty 24/7 NAS operation Firmware Updates Through Synology DSM on supported Synology systems Supply Voltage 12V (±10%) / 5V (±5%) Typical Active Idle Power 3.96W Typical Random Read/Write Power 4.85W (4KB, Q1) Operating Temperature 0–65°C Non-Operating Temperature −40–70°C Operating Relative Humidity 5–90% RH, non-condensing Non-Operating Relative Humidity 5–95% RH, non-condensing Operating Altitude −304.8 to 3048m Non-Operating Altitude −304.8 to 12192m Typical Idle Acoustics 23dB Typical Seek Acoustics 27dB Operating Shock 785m/s² (2ms) Non-Operating Shock 2943m/s² (2ms) Dimensions (H × W × D) 20.20 × 101.85 × 147mm Weight 490g Certifications Listed CE, RCM, BSMI, KC, UKCA, UL, TÜV, ICES, RoHS