E2824
The E2812 and E2824 controller shelves are high-density SAS-3 (12 Gb/s) enclosures, with one or two E2800 controllers and either high-capacity 3.5-inch SAS drives or high-performance 2.5-inch SAS drives. The E2812 and E2824 controller shelves provide high-capacity disk storage for Fibre Channel, SAS, and iSCSI environments.
The E2812 and E2824 controller shelves conform to the 19.0-inch (48.3 cm) rack standard.
Controller shelf Height Width Depth E2812 3.41 in. (8.68 cm) 17.6 in. (44.7 cm) 21.1 in. (53.6 cm) E2824 3.34 in. (8.48 cm) 17.6 in. (44.7 cm) 19.0 in. (48.3 cm) Component Weight Controller canister 5.47 lb (2.48 kg) Power-fan canister 5.2 lb (2.35 kg) 2.5 in. SAS drive 0.6 lb (0.27 kg) 3.5 in. SAS drive 2.09 lb (0.95 kg) 2.5 in. SSD (solid-state disk) 1.33 lb (0.6 kg) Height Width Depth 19.5 in. (49.53 cm) 31.5 in. (80.01 cm) 28 in. (71.12 cm) Environment Altitude Operating Sea level to 10,000 ft (3048 m) above sea level Storage 1000 ft (304.8 m) below sea level to 40,000 ft (12,192 m) above sea level The E2812 and E2824 controller shelves use wide-ranging, redundant power supplies that automatically accommodate voltages to the AC power source. The power supplies meet standard voltage requirements for both North American (USA and Canada) operation and worldwide (except USA and Canada) operation. The power supplies use standard industrial wiring with line-to-neutral or line-to-line power connections.
Keep this information in mind when you prepare the installation site for the controller shelf:
- Protective ground – Site wiring must include a protective ground connection to the AC power source.
Note: Protective ground is also known as safety ground or chassis ground.
- Circuit overloading – Power circuits and associated circuit breakers must provide enough power and overload protection. To prevent damage to the controller shelf, isolate its power source from large switching loads, such as air-conditioning motors, elevator motors, and factory loads.
- Power interruptions – The controller shelf can withstand these applied voltage interruptions:
- Input transient – 50 percent of the nominal voltage
- Duration – One half-cycle
- Frequency – Once every 10 seconds
- Power failures – If a total power failure occurs, the controller shelf automatically performs a power-on recovery sequence without operator intervention.
- Protective ground – Site wiring must include a protective ground connection to the AC power source.
Parameter Low range High range Nominal voltage 100 VAC 240 VAC Frequency 50 to 60 Hz 50 to 60 Hz Typical operating current for 12 drives 4.51A* 1.92A** Typical operating current for 24 drives 5.04A* 2.16A** Maximum operating current for 12 drives 7.2A* 2.9A** Maximum operating current for 24 drives 9.3A* 3.7A** System rating plate label 12A 6.3A Power factor correction is applied within the power supply, which maintains the power factor of the E2812 and E2824 controller shelves at greater than 0.95 with nominal input voltage.
The E2812 and E2824 controller shelves are each shipped with two AC power cords, which use the standard AC outlets in the destination country. Each AC power cord connects one of the power supplies in the controller shelf to an independent, external AC power source, such as a wall receptacle, or to any uninterrupted power supply (UPS).
If you have a cabinet with internal power cabling, such as a ladder cord, you do not need the AC power cords that are shipped with the controller shelf.
