EXP2512 Express Features Support for twelve 3.5-inch large form factor (LFF) or twenty-four 2.5-inch small form factor (SFF) drives within a compact 2U, 19-inch rack mount enclosure Dual port, hot-swappable 6 Gb SAS high-performance and high-capacity nearline drive options Enterprise-grade RAID technology and other advanced functions provided by IBM ServeRAID controllers Daisy-chain connection of multiple EXP2500 enclosures from a single ServeRAID controller port Three-year warranty with customer replaceable units (CRU) and on-site service, along with optional warranty service upgrades Specifications: Height: 8.7 cm (3.4 in) Width: 48.3 cm (19.0 in) Depth: 55.6 cm (21.9 in) Weight: Empty: 7.7 kg (17.0 lb) Fully configured: 26.7 kg (58.8 lb) Operating temperature: 10°C to 35°C (50°F to 95°F) at 30.5 below to 3,000 m above sea level (100 below to 9,840 ft above) Non-operating temperature: -10°C to 50°C (14°F to 125°F) Power : 218 watts Heat dissipation (BTU per hour): 745 Acoustical noise emission: 6.1 bels (idling) 6.3 bels (operating) EXP2500 is supported for direct attachment to select IBM System x servers using one of the following: IBM ServeRAID M5025 SAS/SATA Controller (part number 46M0830) IBM ServeRAID M5120 SAS/SATA Controller (part number 81Y4478) Base model configuration includes: 2U, 19-inch rack mount enclosure Twelve 3.5-inch SAS drive bays One environmental services module with: Two upstream (initiator) 6 Gb SAS ports One downstream 6 Gb SAS port for daisy-chain connection of an EXP2500. One 10/100 Mbps Ethernet port for enclosure management Two AC power supplies and cooling units Two 2.8 meter rack power distribution (PDU) C13 to C14 power cords Rack mount hardware kit Single environmental services module with: Two upstream (initiator) 6 Gb SAS ports One downstream 6 Gb SAS port for daisy-chain connection of an EXP2500 One 10/100 Mbps Ethernet port for enclosure management