Reliability, Availability, And Serviceability - Lenovo System x3250 M4 Installation And Service Manual

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.
• Systems-management capabilities
The server comes with an Integrated Management Module II (IMM2). When the IMM2 is used with the
systems-management software that comes with the server, you can manage the functions of the server
locally and remotely. The IMM2 also provides system monitoring, event recording, and network alert
capability. The systems-management connector on the rear of the server is dedicated to the IMM2. 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
The UEFI firmware offers several features, including Unified Extensible Firmware Interface (UEFI)
version 2.1 compliance, Active Energy Management (AEM) technology, 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. The server is capable of booting UEFI-compliant operating systems,
BIOS-based operating systems, and BIOS-based adapters as well as UEFI-compliant adapters.
For more information about UEFI-compliant firmware, go to http://www.ibm.com/support/entry/
portal/docdisplay?lndocid=MIGR-5083207.
Note: The server does not support DOS (Disk Operating System).

Reliability, availability, and serviceability

Three important computer design features are reliability, availability, and serviceability (RAS). The RAS
features help to ensure the integrity of the data that is stored in the server, the availability of the server when
you need it, and the ease with which you can diagnose and correct problems.
Your server has the following RAS features:
• 3-year parts and 3-year labor limited warranty (Machine Type 2583)
• 24-hour support center
• Automatic error retry and recovery
• Automatic restart on nonmaskable interrupt (NMI)
• Automatic restart after a power failure
• Backup basic input/output system switching under the control of the Integrated Management Module II
(IMM2)
• Built-in monitoring for fan, power, temperature, voltage, and power-supply redundancy
• Cable-presence detection on most connectors
• Chipkill memory protection
• Single-device data correction (SDDC) for x4 DRAM technology DIMMs (available on 16 GB DIMMs only).
Ensures that data is available on a single x4 DRAM DIMM after a hard failure of up to two DRAM DIMMs.
One x4 DRAM DIMM in each rank is reserved as a space device.
• Diagnostic support for ServeRAID and Ethernet adapters
• Error codes and messages
• Error correcting code (ECC) L3 cache and system memory
• Full Array Memory Mirroring (FAMM) redundancy
• Hot-swap cooling fans with speed-sensing capability
• Hot-swap hard disk drives
• Hot-swap power supplies
• Information and light path diagnostics LED panels
• Integrated Management Module II (IMM2)
• Light path diagnostics LEDs for DIMMs, microprocessors, hard disk drives, solid state drives, power
supplies, and fans
10
Lenovo System x3250 M4 Installation and Service Guide