Converged network adapters, Pci express interface, Converged network adapters 179 – Dell Brocade Adapters User Manual
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Brocade Adapters Installation and Reference Manual
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Converged Network Adapters
5
Converged Network Adapters
Two types of CNAs are available:
•
Stand-up adapter
•
Mezzanine adapter
The Brocade stand-up CNAs are low-profile MD2 form factor PCI Express (PCIe) cards, measuring
6.60 in. by 2.71 in. (16.77 cm by 6.89 cm). CNAs are shipped with a low-profile bracket installed
and a standard bracket included for mounting in your host system.
lists the two bracket
types and dimensions.
Mezzanine CNAs are smaller than stand-up modules. For example, the Brocade 1007 adapter is an
IBM compact form factor horizontal (CFFh) adapter measuring approximately 4.9 in. (12.44 cm) by
0.5 in. (1.27 cm) by 6.3 in. (16 cm). Mezzanine adapters mount on blade servers that install in
supported blade system enclosures. Refer to the
“Server blades and blade system enclosures
on page 11 for references to CNA compatibility information. Note that
mezzanine CNAs do not have external port connectors with optics such as stand-up CNAs, but
internal ports that connect to switch and I/O modules installed in the blade system enclosure
through high-speed links in the internal enclosure backplane.
PCI Express interface
Install Brocade stand-up CNAs in PCI Express (PCIe) computer systems with an Industry Standard
Architecture/Extended Industry Standard Architecture (ISA/EISA) bracket type. Install the Brocade
mezzanine CNAs in supported server blades that install in supported blade system enclosures.
On-board flash memory provides BIOS support over the PCIe bus.
The CNA is designed to operate on an x8 lane DMA bus master at 250 GMhz. Operation can
negotiate from x8 to x4, x2, and x1 lanes. Following are transfer and data rate specifications for
operation in PCIe Gen 2 and Gen 1 connectors:
•
PCIe Gen 2 connector. Transfer rate of 5 Gigatransfers per second (GT/s) per lane. Data rate of
500 MBps per lane.
•
PCIe Gen 1 connector. Transfer rate of 2.5 GT/s per lane. Data rate of 250 MBps per lane.
Power Consumption
adapter and optics
9 W typical with SFP running 16 Gbps traffic
Operating Voltage
12V
TABLE 17
Environmental and power requirements (continued)
Property
Requirement
TABLE 18
CNA mounting brackets
Bracket Type
Dimensions
Low Profile
73 in. by 3.15 in. (1.84 cm by 8.01 cm)
Standard
73 in. by 3.15 in. (1.84 cm by 12.08 cm)