Lenovo ThinkSystem SR950 Setup Manual page 11

Table 1. Server Specifications (continued)
Specification
Fans
Power supplies
Minimal configuration for
debugging
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.
CAUTION:
1. 240 V dc input (input range: 180-300 V dc) is ONLY supported in Chinese
Mainland.
2. Power supplies with 240 V dc are not hot-swappable. To remove the power
cord, ensure you have turned off the server or disconnected the dc power
sources at the breaker panel.
3. In order for the ThinkSystem products to operate error free in both a DC or
AC electrical environment, a TN-S earthing system which complies to
60364-1 IEC 2005 standard has to be present or installed.
• 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)
.
Chapter 1 Introduction
7