Lenovo System x3550 M5 Installation And Service Manual page 28

• Redundant connection
The addition of the optional Ethernet adapter provides failover capability to a redundant Ethernet
connection with the applicable application installed. If a problem occurs with the primary Ethernet
connection and the optional Ethernet adapter is installed on the server, all Ethernet traffic that is
associated with the primary connection is automatically switched to the optional redundant Ethernet
adapter connection. If the applicable device drivers are installed, this switching occurs without data loss
and without user intervention.
• Redundant cooling and optional power capabilities
The server supports a maximum of two 550-watt, 750-watt, 900-watt, or 1500-watt hot-swap power
supplies and seven dual-motor hot-swap fans, which provide redundancy and hot-swap capability for a
typical configuration. The redundant cooling by the fans in the server enables continued operation if one
of the fans fails. The server comes with the minimum of one 550-watt, 750-watt, 900-watt or 1500-watt
hot-swap power supply and five fans.
You must install the fan 6 and fan 8 when you install the second microprocessor in the server. You can
order the second optional power supply for power redundancy.
Note: You cannot mix power supplies that have different wattages in the server.
• ServeRAID support
The ServeRAID adapter provides hardware redundant array of independent disks (RAID) support to
create configurations. The standard RAID adapter provides RAID levels 0, 1, and 10. An optional RAID
adapter is available for purchase.
• SD adapter
A raid controller for Secure Digital (SD) media. It has two upstream connections, a USB connection to the
server chipset, and an MMC connection to the integrated management module (IMM2.1).
• Systems-management capabilities
The server comes with an Integrated management module 2.1 (IMM2.1). When the IMM is used with the
systems-management software that comes with the server, you can manage the functions of the server
locally and remotely. The IMM also provides system monitoring, event recording, and network alert
capability. The systems-management connector on the rear of the server is dedicated to the IMM. The
dedicated systems-management connector provides additional security by physically separating the
management network traffic from the production network. You can use the Setup Utility to configure the
server to use a dedicated systems-management network or a shared network.
• UEFI-compliant server firmware
Lenovo System x Server Firmware (server firmware) offers several features, including Unified Extensible
Firmware Interface (UEFI) 2.1 compliance; enhanced reliability, availability, and serviceability (RAS)
capabilities; and basic input/output system (BIOS) compatibility support. UEFI replaces the BIOS and
defines a standard interface between the operating system, platform firmware, and external devices.
UEFI-compliant System x servers are capable of booting UEFI-compliant operating systems, BIOS-based
operating systems, and BIOS-based adapters as well as UEFI-compliant adapters.
Note: The server does not support DOS (Disk Operating System).
• VMware ESXi embedded hypervisor
The VMware ESXi embedded hypervisor software is available on the optional USB flash device or SD
adapter. Hypervisor is virtualization software that enables multiple operating systems to run on a host
system at the same time. The USB embedded hypervisor flash device can be installed in the internal USB
connector on the system board. The SD adapter wit embedded hypervisor software can be installed in the
SD adapter connector on the system board. For more information about using the embedded hypervisor,
see "Using the embedded hypervisor" on page 45.
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Lenovo System x3550 M5 Installation and Service Guide