WD PURPLE HDD 8TB Surveillance, 256MB cache, 5640 RPM, up to 215MB/s transfer rate, 24/7

8TB 3.5" SATA III 128MB IntelliPower WD84PURZ Purple

3,5" 8TB RED Plus NAS, SATA 6GB/s , 5640 RPM, 128MB Cache

8TB 3.5" SATA III 256MB 7.200rpm WD8004FRYZ Gold

8TB 3.5" SATA III 256MB 7.200rpm WD8003FFBX Red Pro

3,5" 8TB PURPLE Pro Surveillance, SATA 6GB/s, 7200 rpm, 256MB cash

WD 6TB 3.5" SATA III 256MB IntelliPower WD60EFPX Red Plus

3,5" 4TB PURPLE Surveillance, SATA 6GB/s, 256MB cash, Transfer Rate up to 175MB/s, up to 64 HD cameras

3,5" 4TB RED Plus NAS, SATA 6GB/s , 5400 RPM, 256MB Cache, CMR technology and RAID optimized NAS systems

4TB 3.5" SATA III 256MB 7.200rpm WD4005FZBX Black

4TB 3.5" SATA III 256MB 7.200 WD4003FRYZ Gold

4TB 3.5" SATA III 256MB 7.200 WD4003FFBX Red Pro