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2.5 Checking Environmental Conditions


2.5 Checking Environmental Conditions
This section describes the environmental conditions for the SPARC M12 systems. The server can be installed at locations that meet the environmental conditions listed in Table 2-4.
Note - When designing environmental control systems such as air conditioning facilities, confirm that the SPARC M12-1 air intake and the PCI expansion unit air intake meet the requirements specified in this section.
The environmental conditions described in Table 2-4 reflect test results from the SPARC M12-1 and PCI expansion unit. The optimal conditions represent the recommended environment in operation. The component failure rate may increase substantially when the system operates for prolonged periods in an environment that is at or close to the operation-time (in operation) limit values, or when the system is installed in an environment that is at or close to the non-operation-time (not in operation) limit values. To minimize the occurrence of system downtime due to a component failure, set the temperature and humidity within the optimal condition range.

The following conditions must be met to prevent overheating:
  1. Neither warm air nor hot air blows directly on the front of the rack
  2. Neither warm air nor hot air blows directly on the front panel of any chassis
Table 2-4  Environmental Conditions
Item In Operation Not in Operation Optimal Condition
Ambient temperature 5°C to 35°C
(41°F to 95°F)
(*3)
- When unpacked
0°C to 50°C
(32°F to 122°F)

- When still packed
-25°C to 60°C
(-4°F to 140°F)
21°C to
23°C
(70°F to
74°F)
Relative humidity
(*1)
- When installed in server room
20% RH to 80% RH

- When installed in office
20% RH to 80% RH
- When installed in server room
8% RH to 80% RH

- When installed in office (*4)
8% RH to 80% RH
45% RH or higher
but less than 50% RH
Maximum wet-bulb temperature
- When installed in server room
26°C (78.8°F)

- When installed in office
29°C (84.2°F)
- When installed in server room
27°C (80.6°F)

- When installed in office (*4)
29°C (84.2°F)
 
Altitude limit
(*2)
0 m to 3,000 m

(0 ft. to 10,000 ft.)
0 m to 12,000 m

(0 ft. to 40,000 ft.)
 
Temperature conditions
- When installed at 0 m to 500 m (0 ft. to 1,640 ft.)
5°C to 35°C (41°F to 95°F)

- When installed at 500 m to 1,000 m (1,644 ft. to 3,281 ft.)
5°C to 33°C (41°F to 91.4°F)

- When installed at 1,000 m to 1,500 m (3,284 ft. to 4,921 ft.)
5°C to 31°C (41°F to 87.8°F)

- When installed at 1,500 m to 3,000 m (4,925 ft. to 9,843 ft.)
5°C to 29°C (41°F to 84.2°F)
   
*1 No condensation is assumed regardless of temperature and humidity conditions.
*2 All the altitudes indicate heights above sea level.
*3 If the ambient temperature reaches the limit value, the system sends a warning notification and keeps operating. If the temperature rises further, it executes controlled shutdown process.
*4 To install the SPARC M12-1 in the office, use a rack designed to operate at higher temperatures.