. The 750GB 2.5inch WD RED is a high-quality HDD that delivers incredible performance thanks to its easy to use 2.5inch form factor the drive uses Intelli Power. The WD RED HDD's technical highlight is its 6 Gb/s interface which is the latest SATA III standard. This drive in particular has a storage capacity of 750GB & has a 16MB Cache. Our formula for success at WD has led to the growth of the WD RED making it available in the highest capacities possible. Now up to 10TB WD offers an even broader more comprehensive portfolio of NAS solutions for our customers spanning from a total of 1 to 8 bays. This will allow you to store even more data for your home or small business. The WD RED family just got bigger.WD RED is the only hard drive designed for NAS systems that have 1-8 drive bays. The drives are designed & extensively tested for compatibility in the unique 24x 7 operating environment & demanding system requirements of home & small office NAS. WD eliminates the confusion. These drives are designed for personal home & small business NAS systems up to 8-bays. Built to deliver the best NAS experience NASware 3.0 extends our promise by further optimising WD RED for the NAS environment with added support for 6 to 8 NAS bays. WD RED now supports small NAS systems from 1 to 8 bays thanks to NASware 3.0 which further improves drive compatibility & reliability. At 80TB of total capacity in an 8 bay system WD RED expands your NAS experience. .