Chapter 8. Technical specications
Enclosure dimensions, weights, operating temperature and humidity, and power cooling.
Enclosure dimensions
Table 24. 4U enclosure dimensions
Specication 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 25. 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 26. Ambient temperature and humidity
Specication 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)
©
Copyright IBM Corp. 2020, 71
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