This product is required as a high performance and improved reliability model of rackmount NAS. High performance: 2 ports of 10GbE support port trunk. Expansion memory enhances performance on speed and stability. Support ECC memory. Designed for distributed enterprise, and equipped with redundant power supplies, PSNA 440 provide a reliable and ultra-high performance network attached storage solution to centralize data protection and data management, and deploy high availability storage equipped 10G-bit Ethernet and i-scsi technology.