Note – Enable the configuration policy option when the power supply of the domain is turned off.

TABLE 2-1Unit of Degradation

Value

Unit of degradation

 

 

FRU

Hardware is degraded in units of components such as CPU and

 

memory.

XSB

Hardware is degraded in units of system boards (XSB).

System

Hardware is degraded in units of domains or the relevant domain is

 

stopped without degradation.

 

 

2.2.2.2Floating Board Option

The floating board option controls kernel memory allocation.

Upon deletion of a system board on which kernel memory is loaded, the OS is temporarily suspended. The suspended status affects job processes and may disable DR operations. To avoid this problem, use the floating board option to set the priority of kernel loading into the memory of each system board, which increases the likelihood of successful DR operations.

To move a system board among multiple domains, this option can be enabled for the system board to facilitate the system board move.

The value of this option is “true” (to enable the floating board setting) or “false” (to disable the floating board setting). The default is “false”.

A system board with “true” set for this option is called a floating board. A system board with “false” set for this option is called a non-floating board.

Kernel memory is allocated to the non-floating boards in a domain by priority in ascending order of LSB number. When only floating boards are set in the domain, one of them is selected and used as a kernel memory board. In that case, the status of the board is changed from floating board to non-floating board. When Copy- rename is operated by system board deletion or removal, and only floating board can be used because non-floating board cannot be used, specify the force option (-f). Configuration of floating board option does not change when the force option is used.

Note – Enable the floating board option when the system board is in the system board pool or when the system board is not connected to the domain configuration.

2-14SPARC Enterprise Mx000 Servers Dynamic Reconfiguration User’s Guide • September 2007