Lenovo Flex System x220, Installation And Service Manual

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Table 1. Features and specifications (continued)
Features and specifications
2. If installed, the optional ServeRAID H1135 or ServeRAID M5115 controller supports SSD and SAS drives. The
booting and use of internal drives with VMware is also supported.
3. Chassis is powered on.
4. A3 - Derate maximum allowable temperature 1°C/175 m above 950 m.
5. The minimum humidity level for class A3 is the higher (more moisture) of the -12°C dew point and the 8% relative
humidity. These intersect at approximately 25°C. Below this intersection (~25°C), the dew point (-12°C) represents
the minimum moisture level; above the intersection, relative humidity (8%) is the minimum.
6. Moisture levels lower than 0.5°C DP, but not lower -10 °C DP or 8% relative humidity, can be accepted if
appropriate control measures are implemented to limit the generation of static electricity on personnel and
equipment in the data center. All personnel and mobile furnishings and equipment must be connected to ground
via an appropriate static control system. The following items are considered the minimum requirements:
a. Conductive materials (conductive flooring, conductive footwear on all personnel who go into the datacenter;
all mobile furnishings and equipment will be made of conductive or static dissipative materials).
b. During maintenance on any hardware, a properly functioning wrist strap must be used by any personnel who
contacts IT equipment.
7. 5°C/hr for data centers employing tape drives and 20°C/hr for data centers employing disk drives.
8. Chassis is removed from original shipping container and is installed but not in use, for example, during repair,
maintenance, or upgrade.
9. The equipment acclimation period is 1 hour per 20°C of temperature change from the shipping environment
to the operating environment.
10. Condensation, but not rain, is acceptable.
What your compute node offers
Your compute node offers features such as the integrated management module II, hard disk drive support,
systems-management support, Lenovo X-Architecture , microprocessor technology, integrated network
support, I/O expansion, large system-memory capacity, light path diagnostics LEDs, PCI Express, and
power throttling.
• Features on Demand
If a Features on Demand feature is integrated in the compute node or in an optional device that is installed
in the compute node, you can purchase an activation key to activate the feature. For information about
Features on Demand, see “Features on Demand” on page 40.
• Flexible network support
The compute node provides flexible network capabilities:
– Models with embedded Ethernet
The dual-port 1 Gb Broadcom Ethernet controller is routed to a 100 Gb connector on the system board.
This connector attaches to a periscope connector that enables 100 Gb support. The controller also
supports Wake on LAN technology.
– Models without embedded Ethernet
The compute node has connectors on the system board for optional expansion adapters for adding
network communication capabilities to the compute node. You can install up to two I/O expansion
adapters for network support. This provides the flexibility to install expansion adapters that support a
variety of network communication technologies.
• Hard disk drive support
The compute node supports up to two hot-swap hard disk drives. You can implement RAID 0 or RAID
1 for the drives.
• Lenovo ServerGuide Setup and Installation CD
The ServerGuide Setup and Installation CD, which you can download from the web, provides programs to
help you set up the compute node and install a Windows operating system. The ServerGuide program
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Flex System x220 Compute Node Installation and Service Guide