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Operating Systems AIX What's the difference between VIOS and LPAR? Post 302522905 by johnf on Tuesday 17th of May 2011 03:46:54 AM
Old 05-17-2011
VIO is an LPAR

When the LPAR build is started a choice is presented to either build an LPAR or a VIO server. The VIO server presents virtual devices to other LPARs contained in the same Power series frame. The virtual devices presented are virtual Shared Ethernet Adapters (SEA); virtual SCSI adapters; and virtual Fibre adapters (NPIV). In a single Power system it would be bad practice to have only 1 VIO server. The VIO setup is all about resilience with each VIO server supplying failover capability to client LPARS.

The VIO server uses a subset of AIX and the VIO user (padmin) runs in a restricted shell and has a different command set. The VIO server should not be considered as another LPAR, it is a VIO server!

Building a VIO server can be done either by the Graphical User Interface on the Hardware Management Console (HMC) or running a script in an SSH session on the same HMC.

I hope this helps somewhat.
 

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asadmin-list-virtual-servers(1AS)				   User Commands				 asadmin-list-virtual-servers(1AS)

NAME
asadmin-list-virtual-servers, list-virtual-servers - gets the virtual servers SYNOPSIS
list-virtual-servers --user admin_user [--password admin_password] [--host localhost] [--port 4848] [--secure|-s] [--passwordfile filename] [--terse=false] [--echo=false] [--interactive=true] Gets all the virtual server elements. This command is supported in remote mode only. OPTIONS
--user authorized domain application server administrative username. --password password to administer the domain application server. --host machine name where the domain application server is running. --port port number of the domain application server listening for administration requests. --secure if true, uses SSL/TLS to communicate with the domain application server. --passwordfile file containing the domain application server password. --terse indicates that any output data must be very concise, typically avoiding human-friendly sentences and favoring well- formatted data for consumption by a script. Default is false. --echo setting to true will echo the command line statement on the standard output. Default is false. --interactive if set to true (default), only the required password options are prompted. Example 1: Using list-virtual-servers asadmin> list-virtual-servers --user admin --password adminadmin --host localhost --port 4848 Command list-virtual-servers executed successfully EXIT STATUS
0 command executed successfully 1 error in executing the command asadmin-create-virtual-server(1AS), asadmin-delete-virtual-server(1AS) J2EE 1.4 SDK March 2004 asadmin-list-virtual-servers(1AS)
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