Dell AX4-5 - Manual (Page 12)

12 Introduction
In a Dell PowerEdge high availability cluster configuration, each server
module requires at least one expansion card. Expansion cards for either Fibre
Channel or Gigabit Ethernet (for iSCSI) are available, and allow the server
module to communicate with the shared storage system for the cluster. The
expansion cards, also known as daughter cards or mezzanine cards, are
installed on the server module and contain two I/O ports. These I/O ports are
internally connected to two separate I/O modules in the server enclosure.
By attaching to two separate I/O modules, an expansion card can provide
redundant paths and load balance the I/O from the server module to the
shared storage system(s) for the PowerEdge cluster solution. Table 1-1
outlines the number of expansion cards that are available on each supported
server module.
Each server module is also configured with two additional Ethernet ports for
cluster interconnects. These are internally connected to two separate Gigabit
Ethernet pass-through or Gigabit Ethernet switch modules in the server
enclosure. With certain server modules, it is also possible to configure
additional Ethernet ports, which can enable the use of NIC teaming on the
cluster public network.
For a list of supported Fibre Channel and iSCSI daughter cards, see the
Platform Guide for your PowerEdge cluster located on the Dell Support
website at support.dell.com.
Table 1-1. PowerEdge Blade Server Features
Server Enclosure 1855/1955 M1000e
Supported blade server
modules
PowerEdge 1855, 1955 PowerEdge M600, M605
Maximum number of server
modules per server enclosure
10 16
Number of mezzanine card
slots per server module
1 2
book.book Page 12 Monday, December 31, 2007 3:41 PM