Technical specifications

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Enclosure dimensions, weights, operating temperature and humidity, and power cooling.

Enclosure dimensions

Table 1. 4U enclosure dimensions
Specification Metric units Imperial units
Height (including top cover) 176.4 mm 6.94 in
Width (excluding ears and rails) 441.0 mm 17.36 in
Depth (including handles, excluding cables) 1,139.0 mm 44.84 in

Enclosure weights

Table 2. Disk Enclosure weights
CRU/component Metric units Imperial units
Storage enclosure (empty) 36.30 kg 80.00 lb
Disk drive module (3.5" LFF disks) 0.80 kg 1.80 lb
Power Supply Unit (PSU) 1.45 kg 3.20 lb
System fan module 0.70 kg 1.50 lb
IOM 0.80 kg 1.80 lb
IOM fan module 0.345 kg 0.80 lb
HS expander module 0.10 kg 0.20 lb
Disk Enclosure

(fully populated with 106 drives: maximum weight)

 145.60 kg 321.00 lb
  • 1- Weights shown are nominal, and subject to variances. Disk drive module weights vary by type of disk used.
  • 2 - Rail kit adds approximately 6.25 kg (14.9 lb) to the aggregate enclosure weight. The CMA adds 0.91 kg (2.0 lb) to aggregate enclosure weight.
  • 3 - Weights may vary due to the number of disks and differing calibrations between scales.

Environmental requirements

Table 3. Ambient temperature and humidity
Specification Temperature range Relative humidity
Operating 5º C to 35ºC (41º F to 95º F, de-rated by 1º C per 300m above 900m) (ASHRAE A2 2015 thermal guidelines) -12º C DP/10 to 80% (Max)

(Non-condensing)
Non-operating -40º C to +70º C (-40º F to +158º F) (Max rate of change: 20º C) -12º C DP/5 to 100% (Max)

(Non-condensing)
Specification Measurement/description
Airflow System must be operated with low pressure rear exhaust installation.

Back pressure created by rack doors and obstacles not to exceed 5 Pa (0.5 mm H2O)
Altitude, operating -100 to 3,048 meters (0 to 10,000 feet). Maximum operating temperature is de-rated by 1º C for each 300 m above 900 m (2952.76 feet)
Altitude, non-operating -100 to 12,192 m (-328 to 40,000 feet)
Shock, operating 3.0 g, 11 ms (per axis)
Shock, non-operating 20.0 g, 7 ms, 10 shock pulses (2 shocks per axis X, Y in positive and negative direction, and 2 shocks in positive Z axis) OR ISTA 3H (mounted in a rack, horizontal impact on all sides, 4-in drop tests)
Vibration, operating 0.18 Grms 5Hz to 500 Hz, 30 min per axis
Vibration, non-operating 0.54 Grms 6Hz to 200 Hz (ISTA 3E)
Vibration, relocation ISTA3H air ride for 60 min
Acoustics 4U enclosures: Sound power operating £ 8.5 Bels LWAd @23ºC
Orientation and mounting:
  • Rack rails
  • Rack characteristics
 1.2 m rack mount (4 EIA units)
  • To fit 1.2 m depth racks compliant with the SSI server rack specification
  • Back pressure not exceeding 5 Pa (~0.5 mm H20)

Power supply unit specifications

Table 4. Power cooling module specifications
Specification Measurement/description
Dimensions 38.1 mm high x 169.9 mm wide x 211.1 mm long:
  • X-axis length: 169.9 mm (6.69 in)
  • Y-axis length: 38.1 mm (1.5 in)
  • Z-axis length: 211.1 mm (8.3 in)
Maximum output power 2000 W
Voltage range 200–240 VAC rated
Frequency 50–60 Hz
Voltage range selection Auto-ranging: 90–264 VAC, 47–63 Hz
Maximum inrush current 55A
Power conversion efficiency ³ 94% @ 230 VAC (50% load)
Harmonics Meets EN61000-3-2 (EU), EN 31000-3-3 (EU), EN 55024 (EU), KN 24/KN 35 (S. Korea)
Output +12V @ 164A, +12V Standby Voltage @3.5A
Hot pluggable Yes
Switches and LEDs AC power cable connect and one bi-tonal status indicator LED
Enclosure cooling Four dual-impeller, counter rotating axial fans (enclosure rear-panel)

Two single-impeller axial fans (controller bay)