12 Intel
®
Modular Server System Service Guide
One power supply supports one compute module plus all other modules in the system.
Two power supplies support two to three compute modules (in any slot) plus all other
modules in the system.
Three power supplies support four to six compute modules (in any slot) plus all other
modules in the system.
Any additional power supplies above the minimum required (based on configuration)
provide redundancy.
I/O Module Slots
The middle-rear of the chassis can accommodate up to four expansion modules.
Ethernet Switch Module
One or two hot-swap Intel
®
Gigabit Ethernet Switch Modules can be installed. Each
switch has ten uplink ports and twelve internal server bay ports, two ports routed to each
compute module. One switch module is the minimum configuration; a second switch
module allows for network redundancy.
Storage Control Module
One or two hot-swap Intel
®
Storage Control Modules can be used for up to 14 hot-swap
SAS hard drives in the Intel
®
Modular Server System MFSYS25 and up to 6 hot-swap
SAS/SATA hard drives in the Intel
®
Modular Server System MFSYS35. One storage
control module is the minimum configuration; a second storage control module allows for
storage control module redundancy. When two storage control modules are installed and
one fails, drive access is maintained through the operational storage control module.
Management Module
The Intel
®
Management Module 2 is installed in the middle-rear of the chassis, between
the four I/O slots. This module provides an Internet browser interface that enables the
configuration and management of the entire modular server system. This module is not
redundant but the system will continue to operate normally if this module fails. However,
any changes to the system configuration will not be recognized until the failed
management module is replaced.
Main Cooling Modules
Two hot-swap main cooling modules are installed on the left rear of the chassis. Each
module contains a redundant fan. Main cooling modules maintain separate zones in the
chassis. Both modules are required to properly cool all compute modules.
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