Lenovo ThinkSystem SR950 Setup Manual page 11

Table 1. Server Specifications (continued)
Specification
Fans
Power supplies
Minimal configuration for
debugging
Acoustical noise emissions
(base configuration)
Description
Up to twelve (60 mm x 38 mm) internal hot-swap system fans (dependent on server
configuration)
• The six upper fans are not installed for the four-processor-limited server
configuration.
• Only three upper fans are installed for the storage-rich configuration.
Two types of fans are supported:
• 60 mm x 38mm, 16K internal hot-swap fans (01CX965)
• 60 mm x 38mm, 19K internal hot-swap fans (01PG490)
Notes:
• Different fan types cannot be mixed within a system. All fans must be either 16K
fans or 19K fans.
• Before upgrading fans from 16K to 19K, you must make sure that the system has
version 2 of the ThinkSystem 2-CPU, 24DIMM, Compute System Board
(01CV978) installed in each compute tray.
• This server supports three types of hot-swap power supply units:
– 1100-watt power supply
– input voltage 110V, 220V, or 240V ac
– 1600-watt power supply
– input voltage 220V or 240V ac
– 2000-watt power supply
– input voltage 220V ac
• The power subsystem supports balanced N+N redundancy operation, where N =
1 or 2.
• Two processors in processor socket 1 and 2
• Two DRAM DIMMs in slot 8 and 20
• One power supply in slot 1
• One drive with RAID adapter and backplane (If OS is required for debugging)
• Six system fans (fan 1 to 6)
• Sound power, idling: 6.1 bels
• Sound power, operating: 6.1 bels
Note: 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.
. 7
Chapter 1 Introduction