Brochure

reliability and thus delivers an
enterprise- class iSCSI solution for the IT
customer.
Power Management Technologies
Today, companies everywhere are
looking for ways to decrease energy
consumption across the enterprise
to reduce costs and environmental
impact, while at the same time
solving increasingly important power
density challenges. That’s why Intel
has introduced new, advanced Power
Management Technologies (PMTs) with
the Intel® Ethernet I350 Server Adapter
family that enable enterprises to
congure power options on the adapter
and more effectively manage their
power consumption.
Energy Efficient Ethernet (EEE)
The Intel® Ethernet I350 Server Adapter
family supports the IEEE802.3az Energy
Efcient Ethernet (EEE) standard so that,
during periods of low network activity,
EEE reduces the power consumption of
an Ethernet connection by negotiating
with a compliant EEE switch port to
transition to a low power idle (LPI)
state. This reduces the controller power
to approximately 50% of its normal
operating power, saving power on the
network port and the switch port. As
soon as increased network trafc is
intelligently detected, the controller
on the platform and the switch quickly
come back to full power to handle
the increased network trafc. EEE is
supported for both 1000BASE-T and
100BASE-TX.
DMA Coalescing
Another power management technology
that can reduce power on the server
platform is DMA Coalescing (DMAC).
Typically, when a packet arrives at a
server, DMA calls are made to transfer
the packet within the server. These calls
wake up the processor, memory and
other system components from a lower
power state in order to perform the tasks
required to handle the incoming packet.
Based on the congurable DMAC
settings, incoming packets are buffered
momentarily before any DMA calls are
made. This enables the controller to
intelligently identify opportunities to
batch multiple packets together so that
when components are wakened from
lower power states they can efciently
handle the batched packets at the same
time. This enables platform components
to remain in lower power states longer,
which can dramatically reduce platform
energy consumption. DMAC synchronizes
DMA calls across all controller ports to
ensure maximum power savings.
These and the additional Power
Management Technologies included
with Intel® Ethernet will help you more
effectively management your power
challenges.
Software Tools and Management
In 1996, Intel Corporation introduced
Intel® Adapter Fault Tolerance software,
since then, Intel® Advanced Network
Services (Intel® ANS), as they are now
called, have continued evolving to include
new teaming technologies and techniques
such as Virtual Machine Load-Balancing
(VMLB) for Hyper-V environments. Today,
Intel ANS includes a variety of teaming
congurations for up to eight adapters,
support for mixed vendors server
adapters teaming and includes support for
802.1q VLANs, making Intel ANS one of
the most capable and comprehensive tools
for supporting server adapter teaming.
Additionally, Intel® PROSet for Windows*
Device Manager (DMIX) and PROsetCL
extends driver functionality to provide
additional reliability and Quality of Service
features and conguration.
Source: Intel Labs
Energy Efficient Ethernet reduces the controller
power to approximately 50% of its normal
operating level.
As shown by the red line, components have less time
between DMA calls to reach and stay in lower power
With more time between DMA calls, components can
reach lower power states and remain in them longer.
High
Power
Low
High
Power
Low
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