QNAP expanded its Turbo NAS lineup with two new mid-range NAS servers targeted at SMB and corporate customers. The new TS-239 Pro II (2 drive model) and TS-439 Pro II (4 drive model) incorporate the new Intel Atom D410 single-core processor, which delivers up to 8TB of high performance, highly reliable networked storage coupled with the business-essential features of QNAP's ultra-high performance Business Series NAS servers. TS-239 Pro II and TS-439 Pro II NAS servers are compatible with VMware's vSphere4 (ESX 4.0) virtualization platform, ideal for departmental file sharing, storage, and advanced server applications in the office environment. VMware's vSphere is the industry's first cloud operating system that offers a way to reduce IT costs and increase responsiveness. Shared networked storage is an essential component of a Cloud Computing infrastructure. SMB and corporate users are able to enjoy the interoperability between VMware virtual machines and QNAP high performance, low power consumption certified storage. TS-239 Pro II and TS-439 Pro II Turbo NAS servers are currently available through QNAP global commercial distributors, resellers, and retailers.