Server Management Guide

Baseboard Management Controller
42 Intel
®
Server Boards and Server Platforms Server Management Guide
 Data Center Management Interface (DCMI)
The DCMI Specification is an emerging standard that is targeted to provide a simplified management
interface for Internet Portal Data Center (IPDC) customers. It is expected to become a requirement for
server platforms that are targeted for IPDCs. DCMI is an IPMI-based standard that builds upon a set of
required IPMI standard commands by adding a set of DCMI-specific IPMI OEM commands.
 Lightweight Directory Authentication Protocol (LDAP)
The Lightweight Directory Access Protocol (LDAP) is an application protocol supported by the BMC for
the purpose of authentication and authorization. The BMC user connects with an LDAP server for login
authentication. This is supported only for non-IPMI logins including the embedded web UI and SM-CLP.
IPMI users/passwords and sessions are not supported over LDAP.
LDAP can be configured (IP address of LDAP server, port, and so on) through the BMC’s Embedded
Web UI. LDAP authentication and authorization are supported over the any NIC configured for system
management. The BMC uses a standard Open LDAP implementation for Linux*. Only open LDAP is
supported by BMC. Microsoft Windows* and Novell* LDAP are not supported.
2.6.11 Monitoring for “Fans Off” Scenario
On Intel
®
Xeon
®
Processor E5 4600/2600/2400/1600/S1400 Product Families, it is likely that there will
be situations where specific fans are turned off based on current system conditions. BMC Fan monitoring
will comprehend this scenario and not log false failure events. The recommended method is for the BMC
FW to halt updates to the value of the associated fan tach sensor and set that sensor’s IPMI sensor state to
“reading-state-unavailable” when this mode is active. Management software must comprehend this state
for fan tach sensors and not report these as failure conditions.
The scenario for which this occurs is that the BMC Fan Speed Control (FSC) code turns off the fans by
setting the PWM for the domain to zero. This is done when based on one or more global aggregate
thermal margin sensor readings dropping below a specified threshold.
By default the fans-off feature will be disabled. There is a BMC command and BIOS setup option to
enable/disable this feature.
The SmaRT/CLST system feature will also momentarily gate power to all the system fans to reduce
overall system power consumption in response to a power supply event (for example, to ride out an AC
power glitch). However, for this scenario, the fan power is gated by HW for only 100ms, which should
not be long enough to result in triggering a fan fault SEL event.
2.6.12 Intel
®
Remote Management Module 4
The Intel
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RMM4 supported on Intel
®
Server S4600/S2600/S2400/S1600/S1400 platforms is same as
Intel
®
S1200BT server board.