Fujitsu Siemens Computers SX series User Manual page 287

Dynamic Reconfiguration
DR-disconnect
Disconnection of an XSB with implicit detachment (DETACH) of the CPUs and the
I/O ports (exception: UHPS) in BS2000/VM2000.
An XSB on which a UHPS is put into operation or on which usable memory is available
cannot be removed using DR-disconnect.
DR-disconnect is only accepted for an XSB which is either integrated in or assigned to
the home partition.
The assignment of an XSB can be defined when it is disconnected from a partition.
Automatic recovery function
In a BS2000 partition with DR capability this function ensures that after a system reboot
which was caused by a component failure (consequence: XSB failure), the system
board with the failed XSB can be serviced for this partition during ongoing operation.
Specifically this means:
As the boot XSB the automatic recovery function selects an XSB located on a different
system board from the one affected by the failure. On the XSBs which are located on
the system board to be repaired and integrated in the partition concerned, only the
CPUs are put into operation.
Both the memory and the I/O ports (including UHPS) are thus made unusable.
Consulting recommendation
Configuring an SX server with DR capability to suit actual requirements and implementing
a cross-partition DR concept are complex tasks.
The recommended procedure is to design the DR scenarios before you obtain an SX server
and to define the SX server configuration in such a way that the required DR scenarios are
possible. Depending on the planned application scenario for DR, the configuration of the
standard SX150 models may need to be expanded.
To do this, please contact your sales representative at Fujitsu Siemens Computers GmbH.
U41272-J-Z385-3-76
Functional scope, concepts and applications
287