Dell PowerEdge M420 Reference Manual page 1545

User Guidelines
The hostname may include any printable characters except a double quote or
question mark. Enclose the string in double quotes to include spaces within
the name. The surrounding quotes are not used as part of the name. The CLI
does not filter illegal characters and may truncate entries at the first illegal
character or reject the entry entirely.
Example
The following example specifies the switch host name.
console(config)# hostname Dell
initiate failover
To manually force a failover from the management unit to the backup unit in
a stack, use the initiate failover command in Stack Configuration mode.
Syntax
This command has no user guidelines.
Default Configuration
There is no default configuration.
Command Mode
Stack Configuration mode
User Guidelines
This command forces a warm restart of the stack. The backup unit takes over
as the new management unit without clearing the hardware state on any of
the stack members. The original management unit reboots. If the system is
not ready for a warm restart, for example because no backup unit has been
elected or one or more members of the stack do not support nonstop
forwarding, the command fails with a warning message.
The movemanagement command also transfers control from the current
management unit; however, the hardware is cleared and all units reinitialize.
1541
System Management Commands