|C H A P T E R 1|
For safety and compliance information, refer to the Sun Netra X4250 Server Safety and Compliance Guide, 820-4054, and the Important Safety Information for Sun Hardware Systems, 821-1590, that came with your server.
|Width||Bezel||17.4 in. (442.0 mm)|
|Depth||To connector plane||20 in. (502 mm)|
|Height||2 rack unit (2U) nominal||3.44 in. (87.4 mm)|
|Weight||Server only||34.78 lbs (15.81 kg)|
|Clearance, front of server||36 inches (91 cm)|
|Clearance, rear of server||36 inches (91 cm)|
|Ambient temperature||41°F to 104°F (5°C to 40°C) up to 6000 feet (1829 meters)||–40°F to 158°F (–40°C to 70°C)|
|Relative humidity||10% to 90% noncondensing, short term 25°F to 113°F (-5°C to 55°C)||Up to 93% noncondensing 100.4° (37.7°C) maximum wet bulb|
|Elevation (Sun requirement)||Maximum 9840 feet (3000 meters) at 104°F (40°C)||Maximum 39370 feet (12000 meters)|
|Elevation (NEBS requirement)||-200 feet to 5900 feet (-60 meters to 1800 meters) at 104°F (40°C)|
|Vibration||DC servers: 0.1G, 5-100 Hz, 0.1 Oct/min||DC servers: 0.1G, 5-100 Hz, 0.1 Oct/min|
|Shock||DC servers: Operating 30 m/s2, 11msec half-sine||DC servers: Operating 30 m/s2, 11 msec half-sine|
|Seismic||AC server only: Zone 4||Not applicable|
The server has two hot-swappable power supplies. Both the AC and the DC power supplies are capable of current sharing. To ensure redundant operation of the power supplies, connect the two power cords to separate circuits.
|Parameter||AC Version Requirement||DC Version Requirement|
|Voltage (nominal)||100-120/200-240 VAC||-48 or -60 VDC (-40 to -75 VDC range)|
|Input current (maximum)||8.2 A||19 A|
|DC Input Treatment||N/A||Isolated DC Return (DC-1)|
The total input power for the system is divided equally among the power supplies in operation. Reversing the positive and negative inputs to the power supplies of a DC input system will not cause damage. However, the power supplies with reversed input will not operate.
The inputs to a power supply are isolated from the system chassis and the other power supply inputs. The AC or DC power inputs may be at different voltages within the acceptable range and may have different offset voltages relative to the system chassis.
|Safety||UL/CSA-60950-1 EN60950-1 IEC60950-1 CB Scheme with all country deviations IEC825-1, 2 CFR21 part 1040 CNS14336, GB4943|
|RFI/EMC||EN55022 Class A 47 CFR 15B Class A ICES-003 Class A VCCI Class A AS/NZ 3548 Class A CNS 13438 Class A KSC 5858 Class A GB9254 Class A EN61000-3-2 GB17625.1 EN61000-3-3|
|Immunity||EN55024 IEC 61000-4-2 IEC 61000-4-3 IEC 61000-4-4 IEC 61000-4-5 IEC 61000-4-6 IEC 61000-4-8 IEC 61000-4-11|
|Regulatory markings (pending)||CE, FCC, ICES-003, C-tick, VCCI, GOST-R, BSMI, MIC, UL/cUL, UL/DEMKO/GS, UL/S-mark, CCC|
Your environmental control system must provide intake air for the server which complies with the limits specified in Environmental Specifications.
Note - When you receive your server, place it in the environment in which you will install it. Leave the server in its shipping crate at its final destination for 24 hours. This resting period prevents thermal shock and condensation.
The server has been tested to meet all functional requirements when operating in the operating environmental limits presented in Environmental Specifications. Operating computer equipment in extremes of temperature or humidity increases the failure rate of hardware components. To minimize the chance of component failure, use the server within the optimal temperature and humidity ranges.
Good practice is to connect each power supply to a separate circuit, which enables the server to remain operational if one of the circuits fails. Consult your local electrical codes for any additional requirements.
An ambient temperature range of 21°C (69.8°F) to 23°C (73.4°F) is optimal for server reliability. At 22°C (71.6°F) it is easy to maintain safe relative humidity levels. Operating in this temperature range provides a buffer if the environmental support systems fail.
Ensure that ventilation openings such as cabinet doors, for both the inlet and exhaust of the server, provide a minimum open area of 35.5 in.2 (231 cm2) each. This size equates to a 60% open area perforation pattern across the front and rear area of the server 17.4 in. x 3.4 in. (442 mm x 87.1 mm). The impact of other open area characteristics that are more restrictive. You must evaluate.
Ensure that front and rear clearance of the server allow a minimum of 0.2 in. (5 mm) at the front of the server and 3.15 in. (80 mm) at the rear of the server when mounted. These clearance values are based on the inlet and exhaust impedance (available open area) stated in the third bullet assume a uniform distribution of the open area across the inlet and exhaust areas. These values also improve cooling performance.
Note - The combination of inlet and exhaust restrictions such as cabinet doors and the spacing of the server from the doors can affect the cooling performance of the server. You must evaluate these restrictions. The server placement is particularly important for high-temperature NEBS environments where the server inlet ambient temperature is 55°C (131°F). (The DC-powered server is NEBS compliant.)
|Acoustic power LWAd (1B=10dB)||7.3 B||7.3 B|
To calculate the heat generated by a server so that you can estimate the heat your cooling system must dissipate, convert the figure for the server’s power requirement from Watts to BTU/hr. A general formula for doing this is to multiply the power requirement figure in Watts by 3.412.
Telcordia certified that the DC-powered version of the server meets NEBS Level 3 requirements per SR-3580, including the appropriate sections of GR-63-CORE (Network Equipment-Building System Requirements: Physical Protection) and GR-1089-CORE (Electromagnetic Compatibility and Electrical Safety – Generic Criteria for Network Telecommunications Equipment).
Caution - To maintain NEBS compliance, the network management (NET MGT) Ethernet port and the RJ-45 serial management (SER MGT) port must use shielded cables, and both ends of the shield must be grounded.