The Dr Concept For Bs2000 - Fujitsu Siemens Computers SX series User Manual

Dynamic Reconfiguration

10.1.3 The DR concept for BS2000

The DR processes in BS2000 partitions are performed at Solaris level, either from the
graphical interface PRIMEPOWER ServerView or using the command interface.
DR of XSBs in BS2000 partitions is supported in X2000 and BS2000/VM2000 by functions
which relieve the user of many important tasks.
DR-connect
When an XSB is added to a partition the user's activities are restricted to the following tasks:
1. Initiating the DR process (from PRIMEPOWER ServerView or using a command)
2. Validating devices which become available with the XSB for use by BS2000 applications
3. Increasing the BS2000 workload (optional)
With DR-connect the functions for DR support in X2000 and BS2000/VM2000 ensure that
the resources of the added XSB are integrated into the existing structures so that they can
be used by the system and the BS2000 applications. This means, among other things:
– An ATTACH is performed automatically in BS2000/VM2000 for the "normal" CPUs
concerned.
– The path configuration of PowerPath devices which gain an additional path through the
XSB is automatically extended.
– An ATTACH is automatically performed in BS2000 for BS2000 devices which are
additionally made available by the XSB if these devices are not already known.
– A redundant Solaris network port which becomes additionally available through the
XSB is automatically activated in IPMP.
– A redundant ZASLAN network port which becomes additionally available through the
XSB is automatically activated in BCAM.
DR-disconnect
When an XSB is removed from a partition the user's activities are restricted to the following
tasks:
1. Adjusting the BS2000 workload to the forthcoming performance reduction.
2. Devices which are connected exclusively to the XSB must be released by BS2000 appli-
cations.
3. Releasing devices which are connected exclusively to the XSB and are reserved by
BS2000 applications. Under VM2000 the assignment of these devices as "shared"
devices for multiple VMs must be canceled.
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