WD has expanded its WD Red line of SATA hard drives for home and small office NAS (network attached storage) systems with the release of a 5TB and first-to-market 6TB capacity for NAS-specific storage and the introduction of WD Red Pro hard drives that address the medium to large business NAS market.

WD Red 3.5-inch hard drives are now shipping in 1TB to 6TB capacities. The new WD Red Pro 3.5-inch hard drives are available in 2TB to 4TB capacities.

The WD Red line of hard drives pack an enhanced version of WD’s original NASware technology, designed to improve reliability and system performance, reduce customer downtime and to simplify the integration process. They also feature 3D Active Balance Plus, an enhanced balance control technology, which improves overall drive performance and reliability. Exclusive for WD Red customers, WD offers free premium 24×7 dedicated support.

By increasing NASware 3.0 capability, the WD Red 1–6 TB capacity drives are capable of supporting up to eight bay NAS systems with no negative impact to performance. The drives support eight to 16 bay NAS systems.

Available now at select U.S. retailers and distributors, WD Red and WD Red Pro have three- and five-year limited regional warranties, respectively. Manufacturer’s suggested retail price (MSRP) for the WD Red 5TB is $249, and $299 for the 6TB version. Pricing for the WD Red Pro 2TB is $159, $199 for the 3TB model, and $259 for the 4TB version. More information about WD Red hard drives can be found at http://tinyurl.com/q2egopd .