HP 435508-B21 Quickspecs page 3

QuickSpecs
Performance
Quad-port Gigabit Quad-port Gigabit Quad-port Gigabit Quad-port Gigabit
Ethernet Throughput Ethernet Throughput Ethernet Throughput Ethernet Throughput
Jumbo Frames Jumbo Frames Jumbo Frames Jumbo Frames
802.1Q VLANs with 802.1Q VLANs with 802.1Q VLANs with 802.1Q VLANs with
802.1p QoS Tagging 802.1p QoS Tagging 802.1p QoS Tagging 802.1p QoS Tagging
TCP/IP Stateless TCP/IP Stateless
TCP/IP Stateless TCP/IP Stateless
Offloading Offloading Offloading Offloading
Interrupt Coalescence Interrupt Coalescence Interrupt Coalescence Interrupt Coalescence
Dual Address Cycles Dual Address Cycles Dual Address Cycles Dual Address Cycles
With a theoretical throughput of 10 Gbps each direction, the x4 PCI Express bus is more than capable of
supporting the NC364T's four gigabit ports. Up to 1000 Mbps Ethernet transfer rate per port (4000
Mbps combined) delivers outstanding network performance designed to improve response time and
remove bottlenecks across the entire network. Four ports on a single adapter are ideal for high density,
I/O slot constrained servers, virtualization and security, applications, server consolidation, and increased
network segmentation. The total aggregate throughput of 4Gbps also meets the needs for customers
desiring high bandwidth but are not yet ready to move to 10 Gigabit Ethernet.
NOTE: NOTE: NOTE: Port enumeration on the NC364T is from the top down, i.e. the port near the top of the adapter NOTE:
is port #1 and the port closest to the gold teeth is port #4
Jumbo frames (also known as extended frames) permit a 9K byte transmission unit (MTU), which is six
times the size of standard 1500 byte Ethernet frame. The NC364T supports jumbo frames as a way to
achieve higher throughput and better CPU utilization. Jumbo frames are particularly useful for database
transfers and tape backups.
IEEE 802.1Q virtual local area network (VLAN) protocol allows each physical port of the NC364T to be
separated into multiple virtual NICs for added network segmentation and enhanced security and
performance. VLANs increase security by isolating traffic between users. Limiting the broadcast traffic to
within the same VLAN domain also improves performance. IEEE quality of service (QoS) 802.1p tagging
allows the adapter to mark or tag frames with a priority level across a QoS-aware network for improved
traffic flow.
For overall improved system response, the NC325m supports standard TCP/IP offloading techniques
including:
TCP/IP checksum offload (TCO) moves the TCP and IP checksum offloading from the CPU to the
network adapter.
Large send offload (LSO) or TCP segmentation offload (TSO) allows the TCP segmentation to be
handled by the adapter rather than the CPU.
Interrupt coalescing (interrupt moderation) groups multiple packets, thereby reducing the number of
interrupts sent to the host. This process optimizes host efficiency, leaving the CPU available for other
duties.
Dual address cycles (DAC) provide the ability to address memory above 4 GB and improve system
performance by preventing the server operating system from performing a buffer copy from below 4 GB
to above 4 GB.
DA - 12701
HP NC364T PCI Express Quad Port Gigabit Server HP NC364T PCI Express Quad Port Gigabit Server HP NC364T PCI Express Quad Port Gigabit Server HP NC364T PCI Express Quad Port Gigabit Server
Worldwide — Version 8 — May 16, 2008
Adapter Adapter Adapter Adapter
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