The following information is a summary of the features and specifications of the server. Depending on the model, some features might not be available, or some specifications might not apply.
Table 1. Server Specifications
Specification
Description
Size
1U rack
Height: 43 mm (1.7 inches)
Width: 435 mm (17.1 inches)
With rack handles: 482 mm (18.98 inches)
Without rack handles: 435 mm (17.1 inches)
Depth: 545 mm (21.5 inches)
Note
The depth is measured from the front mounting flange of the rack to the rear of the server.
Weight
Maximum: 12.3 kg (27.1 lbs)
Processor (depending on the model)
One Intel® multi-core processor from Core™, Pentium®, Celeron® or Xeon® E processor family
Note
Use the Setup utility to determine the type and speed of the processors in the node.
If the 95 W processor is used, the server only supports the eight 2.5-inch hot- swap drive backplane.
Intel processors E-22XX, Core i3–9XXX, Pentium Gold G5XXX/G5XXXT, Celeron G49XX and i9–9900K family requires a firmware update to UEFI ISE114H Ver. 2.00 or later.
Supports up to four simple-swap SAS/SATA drive bays.
Supports up to eight hot-swap SAS/SATA drive bays.
Supports up to ten hot-swap SAS/SATA drive bays with two NVMe drive bays.
3.5-inch models:
Supports up to four simple-swap SAS/SATA drive bays.
Supports up to four hot-swap SAS/SATA drive bays.
Note
When the eighth SATA drive is installed, the M.2 drive is disabled.
When all eight storage drives have been installed, and the system has been set to software RAID mode in the UEFI settings, regardless if the disks are configured as an array or as separate disks, drives 6 and 7 cannot be used to install the Windows operating system.
If the M.2 drive has been installed, and the system has been set to software RAID mode in the UEFI settings, regardless if the disks are configured as an array or as separate disks, the M.2 drive cannot be used to install the Windows operating system.
M.2 drive
Supports 2 different physical sizes of M.2 drives:
42 mm (2242)
80 mm (2280)
Note
When the eighth SATA drive is installed, the M.2 drive is disabled.
If the M.2 drive has been installed, and the system has been set to software RAID mode in the UEFI settings, regardless if the disks are configured as an array or as separate disks, the M.2 drive cannot be used to install the Windows operating system.
PCIe riser cards and expansion slots
Up to two expansion slots (depending on the server configuration):
Slot 1-2: PCI Express 3.0 for PCIe -card with the following slots available depending on the card installed:
PCIe slot 1 and slot 2 do not support ARI and SR-IOV.
PCIe slot 3 supports ARI and SR-IOV.
QLogic QL41262 PCIe 25Gb 2-Port SFP28 Ethernet Adapter does not support shared storage V3700 V2/XP and V5030 V2 configurations.
Integrated functions
Lenovo XClarity Controller, which provides service processor control and monitoring functions, video controller, and remote keyboard, video, mouse, and remote drive capabilities.
Light-path diagnostics
Front standard connectors (front of server):
One USB 2.0 connector
One USB 3.1 Gen 1 connector
One front operator panel
One VGA connector (optional)
Rear standard connectors (rear of server):
Two USB 3.1 Gen 2 connectors
Two Ethernet connectors
One Lenovo XClarity Controller network connector
One VGA connector
One serial connector
RAID controllers (depending on the model)
Hardware RAID: Additional RAID levels supported when an optional RAID controller is installed. The hardware RAID controller supports RAID levels 0, 1, 5, and 10.
Software RAID: A software RAID controller is integrated on the system board. The software RAID controller supports RAID levels 0, 1, 5, and 10.
Video controller (integrated into Lenovo XClarity Controller)
Matrox G200
ASPEED
SVGA compatible video controller
Avocent Digital Video Compression
16 MB of video memory (not expandable)
Note
Maximum video resolution is 1600 x 1200 at 75 Hz.
Fans
Four internal system fans (40mm x 28mm)
Power supplies
One fixed power supply: 300-watt ac 80 PLUS Gold
Supports up to two power supplies for redundancy support: 450-watt ac 80 PLUS Platinum
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.
The declared acoustic noise levels are based on specified configurations, which may change slightly depending on configurations/conditions.
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.
Heat output
Approximate heat output:
Minimum configuration: 287.46 BTU per hour (84.25 watts)
Maximum configuration : 783.02 BTU per hour (229.49 watts)
Electrical input
Sine-wave input (50–60 Hz) required
300-Watt power supply:
100-127 V ac /200-240 V ac, 4/2A
450-Watt power supply:
100-127 V ac /200-240 V ac, 5.8/2.9A
Environment
The ThinkSystem SR250 complies with ASHRAE class A2 specifications. System performance may be impacted when operating temperature is outside ASHRAE A2 specification or fan failed condition.
The ThinkSystem SR250 is supported in the following environment:
Air temperature:
Server on:
(ASHRAE Class A2): 10°C to 35°C (50°F to 95°F); decrease the maximum ambient temperature by 1°C for every 300 m (984 ft) increase in altitude above 900 m (2,953 ft).
Sever off: 5°C to 45°C (41°F to 113°F)
Shipping/storage: -40 - 60°C (-40 - 140°F)
Maximum altitude: 3050 m (10 000 ft)
Relative Humidity (non-condensing):
Operating:
ASHRAE Class A2: 8% - 80%, maximum dew point : 21°C (70°F)
Shipment/storage: 8% to 90%
Particulate contamination
Attention
Airborne particulates and reactive gases acting alone or in combination with other environmental factors such as humidity or temperature might pose a risk to the server. For information about the limits for particulates and gases, see Particulate contamination.
Particulate contamination Attention: Airborne particulates (including metal flakes or particles) and reactive gases acting alone or in combination with other environmental factors such as humidity or temperature might pose a risk to the device that is described in this document.