Cisco Cisco UCS B440 M1 High-Performance Blade Server トラブルシューティングガイド

This document describes an issue recognized with SAP HANA Scale-Out solutions with EMC VNC
storage attached which leads to an extended startup time of the Linux servers running the SAP
HANA application. 

Cisco recommends that you have a basic understanding of the preboot execution environment
(PXE) for a diskless environment and the standard Linux init boot process.

The information in this document is based on these software and hardware versions:

SAP HANA Scale-Out solution with EMC VNX 5400 storage.

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UCS C460-M4 and/or UCS B460-M4 servers

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SUSE Linux Enterprise System 11.3

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The information in this document was created from the devices in a specific lab environment. All of
the devices in this document started with a cleared (default) configuration following the solution
specific Cisco internal installation guidelines. If your solution is live, make sure that you
understand the potential impact of any command.

The SAP HANA Scale-Out solutions are configured with two management servers to enable the
solution for the Preboot eXecution Environment (PXE) for diskless boot of the servers using a
network interface. The second management server exists for fault-tolerance reasons to avoid the
situation the servers cannot boot any longer in case of the first management server is not
available. 

Note: Once the HANA server is up and running the management servers can be rebooted
without influencing the HANA servers.

The management server acts as DHCP and tftp server.