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# Server model compatibility list
SPARE_SVR_COMPAT0=["BX920 S1", "BX920 S2"]
17.1.2 Blade Chassis High Availability
This section explains high availability for when operating L-Servers on blade servers.
When the server is a physical L-Server for a blade server, this function which enables restarting of L-Servers, by manually switching over
servers to spare servers when there are blade servers are specified as spare servers on other chassis.
Prerequisites
For details on prerequisites for high availability of blade chassis, refer to "7.1 Blade Chassis High Availability Design" in the "Design
Guide CE".
Installation
This section explains the preparations for configuration of server switchover.
Use the following procedure for configuration:
1. Register a server in a spare blade chassis in the server pool.
Perform one of the following steps:
- Register a server in a spare blade chassis in the server pool
- Register a server in a spare chassis in the server pool for a spare server
2. Create an L-Server.
For details, refer to "16.1 Creation Using an L-Server Template" or "16.2 Creation of Physical L-Servers Using Parameters" in the
"User's Guide for Infrastructure Administrators (Resource Management) CE".
In this case, perform redundancy for the L-Server.
On the [Server] tab of the [Create an L-Server] dialog, set the following items.
- Check the [HA] checkbox.
- When the server in the chassis was registered in the spare server pool in step 1., specify the spare server pool.
Operations
This section explains how to perform switchover of L-Servers.
Use the following procedure to perform switchover of L-Servers:
1. A chassis error is detected.
If the following events occur, determine whether to perform chassis switchover regarding the event as the chassis failure.
- When both management blades cannot be accessed because of a management blade failure
- Communication with the admin LAN is not possible
- When communication is not possible because there is trouble with the LAN switches that connect with the admin LAN
2. Check the chassis on which the L-Server for which an error was detected.
Execute the rcxadm chassis show command to check.
For details on the rcxadm chassis show command, refer to "3.2 rcxadm chassis" in the "Reference Guide (Command/XML) CE".
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