WD 4TB 3.5" SATA III 256MB IntelliPower WD43PURZ Purple hard disk
13.200 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
WD 4TB 3.5" SATA III 256MB IntelliPower WD40EFPX Red Plus hard disk
14.400 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
22.900 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
23.700 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
53.600 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