VTRAK J310S (DUAL) JBOD 2U 12BAY JBOD SAS/SATA D The VTrak J-Class delivers an affordable high-performance SAS solution with advanced enterprise level reliability and functionality. The four external SAS ports provide the connectivity and bandwidth for large capacity solutions requiring multiple cascaded JBODs. Fully redundant I/O modules, power supplies and cooling units, combined with a cable-less system design, provides exceptional data availability even during component failures.