Use this topic to help gain an understanding of what to
consider when planning for the Virtual I/O Server.
Planning for Virtual I/O Server and client logical partitions by using system plans
You can use the System Planning Tool (SPT) to create
a system plan that includes some basic configuration specifications
for a Virtual I/O Serverand
client logical partitions. You can also use the Hardware Management Console (HMC) to create a system
plan based on an existing system configuration.
Specifications required to create the Virtual I/O Server
This topic defines the range of configuration possibilities,
including the minimum number of resources needed and the maximum number
of resources allowed to create the Virtual I/O Server (VIOS).
Capacity planning
This topic includes capacity-planning considerations for
the Virtual I/O Server, including information about hardware resources and limitations.
Configuration requirements for shared memory
Review the requirements for the system, Virtual I/O Server (VIOS), logical
partitions, and paging space devices so that you can successfully
configure shared memory.
Redundancy considerations
Redundancy options are available at several levels in the
virtual I/O environment. Multipathing, mirroring, and RAID redundancy
options exist for the Virtual I/O Server and some client
logical partitions. Ethernet Link Aggregation (also
called EtherChannel) is also an option for the client logical
partitions, and the Virtual I/O Server provides Shared Ethernet Adapter failover.
There is also support for node failover (PowerHA® SystemMirror®) for nodes using virtual
I/O resources.
Security considerations
Review the security considerations for virtual Small Computer
Serial Interface (SCSI), virtual Ethernet, and Shared Ethernet Adapter and the additional
security options available.
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