WD GOLD Enterprise HDD 26TB 3.5", 7200 RPM, 512MB Cache, up to 291MB/s transfer rate, OptiNAND

WD 2TB 3.5" SATA III 64MB IntelliPower WD23PURZ Purple

WD 3TB 3.5" SATA III 256MB IntelliPower WD33PURZ Purple

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

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

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

WD RED PRO NAS HDD 8TB, 3.5", 7200 rpm, 256MB cache, up to 235MB/s transfer rate

WD 8TB 3.5" SATA III 256MB IntelliPower WD80EFPX Red Plus