The Promise VTrak E-Class is a family of intelligent, dual controller, SAS/SATA based storage arrays that fundamentally changes storage economics from purchase and set up to operation and upgrades. Dual 4Gb Fiber Channel (FC) host interface ports per controller provide connectivity into widely deployed Fiber Channel storage networks, perfect for supplementing existing or building new storage networks. Each standard 3U 19" rack unit supports up to 16 off-the-shelf 3.5" SAS or SATA 3Gb/s drives. Attach up to four cascaded SAS JBODs to deliver over 80 bays of networked storage. SAN technology has revolutionized the way data moves throughout the enterprise. VTrak E-Class joins this revolution by exceeding the performance and bandwidth requirements of even the most data intensive applications. Fiber channel's flexible, mature technology and wide interoperability makes it the first choice for mission critical applications. This enterprise-class, cable-less system design includes fully redundant, hot-swappable controllers, power and cooling units. All system components are constantly monitored using industry standard protocols to ensure continuous operation in case of failure or component malfunction. Dual active-active, failover/failback RAID controllers provide redundant data paths to further help ensure availability. RAID 6 (double parity) delivers the highest level of reliability and data protection in a costeffective solution. As the capacity of storage arrays increases, so does the risk of encountering unrecoverable read errors with single parity RAID levels. RAID 6 can handle double drive failures, thereby providing greater protection against data loss. This also dramatically reduces the risk of catastrophic data loss during RAID rebuilds. The VTrak line features Promise's embedded browser based management interface, WebPAM PROe, eliminating the need to install additional software. All VTrak systems on the network can be configured and monitored using a single, easy-to-manage interface through an out-ofband Ethernet port. By using industry-standard management protocols, Promise simplifies integration with third-party management applications.