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Cluster Hardware and Software Preparation 81
The command line version of this is:
As in the case of the SCSI-2 Differential Controller, a system reboot is
required to bring the change into effect.
The maximum length of the bus, including any internal cabling in disk
subsystems, is limited to 19 meters for buses connected to the SCSI-2
Differential Controller, and 25 meters for those connected to the SCSI-2
Differential Fast/Wide Adapter/A or Enhanced SCSI-2 Differential Fast/Wide
Adapter/A.
3.4 Shared LVM Component Configuration
This section describes how to define the LVM components shared by cluster
nodes in an HACMP for AIX cluster environment.
Creating the volume groups, logical volumes, and file systems shared by the
nodes in an HACMP cluster requires that you perform steps on all nodes in
the cluster. In general, you define the components on one node (referred to in
the text as the source node) and then import the volume group on the other
nodes in the cluster (referred to as destination nodes). This ensures that the
ODM definitions of the shared components are the same on all nodes in the
cluster.
Non-concurrent access environments typically use journaled file systems to
manage data, while concurrent access environments use raw logical
volumes. This chapter provides different instructions for defining shared LVM
components in non-concurrent access and concurrent access environments.
Change/Show Characteristics of a SCSI Adapter
SCSI adapter ascsi1
Description Wide SCSI I/O Control>
Status Available
Location 00-06
Internal SCSI ID 7 +#
External SCSI ID [6] +#
WIDE bus enabled yes +
...
Apply change to DATABASE only yes
# chdev -l ascsi1 -a id=6 -P