Lenovo ThinkSystem SR250 Setup Manual page 11

Table 1. Server Specifications (continued)
Specification
Acoustical noise emissions
(base configuration)
Heat output
Description
• Operation:
– Minimum: 5.3 bels
– Typical: 5.4 bels
– Maximum: 5.7 bels
• Idle
– Minimum: 4.9 bels
– Typical: 5.0 bels
– Maximum: 5.4 bels
Notes:
1. These sound power levels are measured in controlled acoustical environments
according to procedures specified by ISO 7779 and are reported in accordance
with ISO 9296.
2. The declared acoustic noise levels are based on specified configurations, which
may change slightly depending on configurations/conditions.
3. The options supported in this server vary in function, power consumption, and
required cooling. Any increase in cooling required by these options will increase
the fan speed and generated sound level. The actual sound pressure levels
measured in your installation depend upon a variety of factors, including: the
number of racks in the installation; the size, materials, and configuration of the
room; the noise levels of other equipment; the room ambient temperature and
barometric pressure; and the location of employees in relation to the equipment.
Approximate heat output:
• Minimum configuration: 287.46 BTU per hour (84.25 watts)
• Maximum configuration : 783.02 BTU per hour (229.49 watts)
.
Chapter 1 Introduction
7