Sun Fire E6900 base server cabinet. Includes 4 * 1.5GHz UltraSPARC IV+ processors, 6 * Power Supplies, 6 * Fan Trays, 2 * System Contollers, 2 * Redundant Transfer Units with 4 * Redundant Transfer Switches. (Updated to support 1.8GHz UltraSPARC IV+ pro