Lenovo x3550 M3 Betriebsanweisung PDF herunterladen (Seite 10)

Leadership enterprise server with significantly lower cost of ownership in a highly available and

expandable, rack-dense, 1U dual-socket server

Please see the Legal Information section for important notices and information.

reducing overall system power requirements.

The Emulex 10Gb/s Virtual Fabric Adapter for IBM System x3550 M3 is based on the Emulex

OneConnect Universal Converged Network Adapter (UCNA) platform that also includes the

capability for future upgrades to Fibre Channel over Ethernet (FCoE) and iSCSI protocol offloads.

By using a common infrastructure for Ethernet and storage networks, data centers can reduce

capital expense (CapEx) for adapters, switches and cables, and operational expense (OpEx) for

power, cooling and IT administration.

End-to-end data protection with hardware parity, CRC, ECC and other advanced error checking

and correcting ensure that data is safe from corruption.

Integrated dual 10Gbps Ethernet ports:

• IPv4/IPv6 TCP, UDP checksum offload; Large Send Offload (LSO); Large Receive Offload;

Receive Side Scaling (RSS); IPV4 TCP Chimney Offload

• VLAN insertion and extraction

• Jumbo frames up to 9000 Bytes

• Preboot eXecutive Environment (PXE) 2.0 network boot support

• Interrupt coalescing

• Load balancing and failover support including adapter fault tolerance (AFT), switch fault

tolerance (SFT), adaptive load balancing (ALB), teaming support and IEEE 802.3ad.

Ultra-Efficient Cooling

Strategically located fans, combined with efficient airflow paths, provide highly effective system

cooling for the x3550 M3, known as Calibrated Vectored Cooling. The base server with one

power supply includes one hot-swap fan module, upgradeable to six modules, for redundant

cooling. Each module includes two back-to-back fans with counterrotating blades. In addition,

each power supply also contains a fan.

The system contains three cooling zones. Zone 1 (incorporating two fan modules) cools all 18

DIMM sockets, Zone 2 (two fan modules) cools the primary processor, and Zone 3 (one or two

fan modules) cools the second processor (if installed).

The fans automatically adjust speeds in response to changing thermal requirements depending on

the zone and internal temperatures. When the temperature inside the server increases, the fans

speed up to maintain the proper ambient temperature. When the temperature returns to a normal

operating level, the fans return to their default speed. In addition, the Bosch BMP085 altimeter

works in conjunction with IMM to govern fan rotation. At high altitudes the air is thinner and doesn’t

cool as well as at lower elevations. In most servers, the fans run fast all the time to allow for use at

high elevations, wasting power. The altimeter allows the IBM fans to run at lower speeds at lower

altitudes.

Why not simply run the fans at 100% capacity all the time? For several good reasons: to reduce

the ambient noise, reduce the wear-and-tear on the fans and reduce the server power draw. The

reduction in ambient noise and power draw may be relatively minor for a single server, but put

dozens or hundreds in a data center and it can make a big difference!

In addition, the server uses hexagonal ventilation holes in the chassis. Hexagonal holes can be

grouped more densely than round holes, providing greater airflow through the system cover.

This cooling scheme is important because newer, more powerful processors generate a significant

amount of heat, and heat must be controlled for the system to function properly.

There are temperature sensors on the planar placed to sense DIMM exhaust temperature, SAS

HDD exhaust temperature, and CPU2 exhaust temperature (through the altitude sensor).

Light Path Diagnostics

Light path diagnostics enables a technician to quickly identify and locate a failed or failing system

component, such as a specific fan or memory DIMM. This enables quick replacement of the

component, which helps increase server uptime and lower operating costs.

The front of the server has an LED indicator light to show possible component failures. If the front

LED indicates an error condition, by pressing a button on the front of the server an LED panel will

pop out and drop down for easy viewing without the need to open the server cover or remove the

server from the rack. The light path diagnostics panel tells the servicer which component requires

attention. In addition, many components have their own identifying LEDs. For example, each of

the memory modules has an LED next to the socket, as do both processors, all adapter slots, all

fan modules, all power supplies, the voltage regulator module and the service processor, allowing

the servicer to easily identify exactly which component needs servicing. By following the “light

path,” the component can be replaced quickly, and without guesswork. (Note: In the event of a

failed DIMM, the system will restart and mark the DIMM as bad while offline, thus allowing the

system to continue running, with reduced memory capacity, until serviced.)

1 2 ... 5 6 7 8 9 10 11 12 13 14 15 ... 20 21

Kommentare zu diesen Handbüchern

Keine Kommentare

Lenovo x3550 M3 Betriebsanweisung Seite 10

Kommentare zu diesen Handbüchern

Verwandte Produkte und Handbücher für Server Lenovo x3550 M3