SEAGATE 4TB 3.5" SATA III 256MB ST4000VX016 SkyHawk hard disk
12.200 RSD
- 4TB Storage Capacity
- 3.5" Form Factor
- SATA III 6 Gb/s Interface
- 256MB Cache
- Up to 180 MB/s Sustained Transfer Rates
- 600,000 Load/Unload Cycles
- 180TB per Year Workload Rating
- 1 Million Hours MTBF
- Designed for 24/7 Surveillance
- Supports up to 64 HD Cameras
SEAGATE 4TB 3.5" SATA III 256MB 5.400 ST4000DM004 Barracuda Guardian hard disk
13.400 RSD
- 4TB Storage Capacity
- 3.5" Form Factor
- SATA III 6 GB/s Interface
- 256MB Cache
- Up to 190 MB/s Sustained Transfer Rate
- 600,000 Load/Unload Cycles
- 2400 Power-On Hours per Year
- 55TB Workload Rate Limit per Year
- Advanced Power Modes
WD 4TB 3.5" SATA III 256MB IntelliPower WD43PURZ Purple hard disk
13.400 RSD
- 4TB Storage Capacity
- 3.5" Form Factor
- SATA III 6 Gb/s Interface
- 256MB Cache
- 5400 rpm rpm
- Up to Sustained Data Transfers
- 300,000 Load/Unload Cycles
- 180TB per Year Workload Rating
- Designed for 24/7 Surveillance
- Supports up to 64 HD Cameras
SEAGATE 4TB 3.5" SATA III 256MB ST4000VN006 IronWolf hard disk
14.200 RSD
- 4TB Storage Capacity
- 3.5" Form Factor
- SATA III 6 Gb/s Interface
- 256MB Cache
- 5400 rpm
- Up to 202 MB/s Data Transfer Rate
- 1.0 Million Hours MTBF
- Workload Rate: 180TB per Year
- 0.73% Annualized Failure Rate (AFR)
- AgileArray & Rotational Vibration
WD 4TB 3.5" SATA III 256MB IntelliPower WD40EFPX Red Plus hard disk
14.800 RSD
- 4TB Storage Capacity
- 3.5" Form Factor
- SATA III 6 Gb/s Interface
- 256MB Cache
- 5400 rpm
- Data Transfer Speeds up to 180 MB/s
- 600,000 Load/Unload Cycles
- 1 Million Hours MTBF
- Dual-Plane Balance Control
- Noise and Vibration Protection
WD 4TB 3.5" SATA III 256MB 7.200 WD4003FRYZ Gold hard disk
23.100 RSD
- 4TB Storage Capacity
- 3.5" Form Factor
- SATA III 6 Gb/s Interface
- 256MB Cache
- 7200 rpm
- Data Transfer Speeds up to 255 MB/s
- 600,000 Load/Unload Cycles
- 2 Million Hours MTBF
WD 4TB 3.5" SATA III 256MB 7.200rpm WD4005FZBX Black hard disk
24.000 RSD
- SATA 6 Gb/s Interface
- 3.5" Form Factor
- 4TB Capacity
- Cache Sizes of up to 256MB of DRAM
- StableTrac Technology
- Dynamic Cache Technology
- 7200-RPM Performance Class
WD 18TB 3.5" SATA III 512MB 7.200rpm WD181PURP Purple Pro hard disk
54.100 RSD
- 18TB Storage Capacity
- 3.5" Form Factor
- SATA III 6 Gb/s Interface
- 512MB Cache
- 7200 rpm
- Up to 272 MB/s Sustained Data Transfers
- 600,000 Load/Unload Cycles
- 550TB per Year Workload Rating
- Designed for 24/7 Surveillance
- Supports up to 64 HD Cameras
WD 18TB 3.5" SATA III 512MB 7.200rpm WD181KFGX Red Pro hard disk
57.400 RSD
- 18TB Storage Capacity
- 3.5" Form Factor
- SATA III 6 Gb/s Interface
- 512MB Cache
- 7200 rpm
- Data Transfer Speeds up to 272 MB/s
- 600,000 Load/Unload Cycles
- 2.5 Million Hours MTBF
- Multi-Axis Shock Sensor
- NASware Technology