After you obtain your Power® Enterprise Pool configuration
file from IBM, you can create and update the Power Enterprise Pools by using the Hardware Management Console (HMC).
Create a Power Enterprise Pool
You
can create a Power Enterprise Pool by
using the HMC.
Ensure
that you meet the following prerequisites for creating a
Power Enterprise Pool:
- Ensure that the configuration file is in the appropriate location.
You must place the file on the local system that you are using to
remotely access the HMC.
This HMC is the
master HMC for
the new pool.
- Ensure that the HMC manages
all the servers that are to participate in the pool.
- Ensure that all servers that are to participate in the pool are
in the standby or the operating state.
- Ensure that all servers that are to participate in the pool use
firmware that is version 7.8 or later.
To create a Power Enterprise Pool, from the master HMC select Systems
Management > Power Enterprise Pools, then click Create
Pool.
Update the configuration of a Power Enterprise Pool
After
the
Power Enterprise Pool is
created, you can update the configuration of your pool. You must contact
IBM and get a new configuration file for your pool to make the following
types of configuration changes:
Ensure that you meet the following prerequisites for updating
the configuration of a
Power Enterprise Pool:
- Ensure that you obtained the required configuration file from
IBM.
- Ensure that the configuration file is in the appropriate location.
You must place the file on the local system that you are using to
remotely access the master HMC for
the pool.
- Ensure that any new server that is to participate in the pool
is in the standby state or the operating state.
- Ensure that any new server that is to participate in the pool
uses firmware that is version 7.8 or later.
- Ensure that any server to be removed from the pool is in the standby
state or the operating state.
- Ensure that any server to be removed from the pool does not have
any Mobile CoD resource assignments or any unreturned Mobile CoD resources.
When you update the configuration of a pool, the HMC validates the sequence
number in the current configuration file. This sequence number must
be greater than, or equal to, the sequence number in the last file
that was used to create or update the pool. If the current sequence
number does not meet this requirement, the update fails. You must
obtain the latest configuration file for the pool and update the pool
again.
The latest configuration file for a Power Enterprise Pool is available
on the Capacity
on Demand (CoD) website.
To
update the configuration of a
Power Enterprise Pool, complete the
following steps:
- From the master HMC for
the pool, select Systems Management > Power Enterprise
Pools.
- In the Power Enterprise Pools table,
right-click on the pool and then select Update Pool.
Allocate Mobile CoD resources to servers in a Power Enterprise Pool
After
you create your Power Enterprise Pool,
all Mobile CoD processor resources and Mobile CoD memory resources
are allocated to the pool. You must use the HMC to allocate Mobile
CoD resources to the servers in the pool. You do not have to notify
IBM when you allocate resources.
You can assign Mobile CoD resources
to partitions in the same manner as you assign permanent resources
to partitions. Mobile CoD resources remain on a server until you remove
them from that server. Mobile CoD resources do not expire in the same
manner as On/Off CoD resources or Trial CoD resources do.
It
is easy to move Mobile CoD resources from one server to another when
migrating partitions. You can remove Mobile CoD resources from a server
and add them to another server, when the resources are still being
used on the server from which they were removed. This action allows
the processor and memory resources of the migrating partition to exist
both on the source and destination servers, and be used by both the
servers at the same time, until the migration is complete.
The
following are Mobile CoD resource allocation guidelines:
- You can add Mobile CoD resources only to servers with unlicensed
resources.
- If you remove Mobile CoD resources from a server that the server
cannot reclaim because they are still in use, these resources become
unreturned resources. A grace period timer then starts for the unreturned
Mobile CoD resources on that server. If you do not free the unreturned
Mobile CoD resources so that the server can reclaim them before the
grace period expires, the pool becomes out of compliance.
- If the pool is out of compliance and the grace period timer for
the pool is expired, you can add Mobile CoD resources only to servers
that have unreturned resources. And, you cannot add more resources
than the number of unreturned Mobile CoD resources on that server.
- When you add Mobile CoD resources to a server, they are used first
to satisfy any unreturned CoD resources on that server.
Mobile CoD resource allocation guidelines for a server
that is in
No Connection,
Pending Authentication, or
Failed
Authentication state:
- You can add Mobile CoD resources only to a server with unreturned
Mobile CoD resources. The number of resources that you add cannot
exceed the number of unreturned Mobile CoD resources on that server.
- You can remove Mobile CoD resources from a server. The Mobile
CoD resources that you remove from the server become unreturned and
a grace period timer starts for these resources. If you do not reconnect
the server to the master HMC before
the grace period expires, the pool becomes out of compliance.
Mobile CoD resource allocation guidelines for a server
that is in
Power Off,
Power Off In Progress,
Error,
or
Initializing state:
- You cannot add Mobile CoD resources to the server.
- You can remove Mobile CoD resources from a server and the resources
are reclaimed immediately.
Mobile CoD resource allocation guidelines for a server
that is in
Incomplete or
Recovery state, and the server
is powered on:
- You can add Mobile CoD resources only to a server with unreturned
Mobile CoD resources. The number of processors that you add cannot
exceed the number of unreturned Mobile CoD resources on that server.
- You can remove Mobile CoD resources from the server.
To allocate Mobile CoD processors to servers in a
Power Enterprise Pool, complete the
following steps:
- From the master HMC for
the pool, select Systems Management > Power Enterprise
Pools.
- In the left navigation pane, select the pool name and then select Processor
Resources.
To allocate Mobile CoD memory to servers in a
Power Enterprise Pool, complete the
following steps:
- From the master HMC for
the pool, select Systems Management > Power Enterprise
Pools.
- In the left navigation pane, select the pool name and then select Memory
Resources.
Set the master HMC for a Power Enterprise Pool
Each Power Enterprise Pool has a master HMC.
Initially, the HMC that you use to create
the pool is set as the master HMC of the pool. It is
preferred that you configure a backup master HMC for a pool when you
create the pool. The backup master HMC must manage all of
the servers in the pool. Configuring a backup master HMC for a pool allows you
to easily set the backup master HMC as the new master HMC for the pool if the
current master HMC becomes
unavailable.
Use the following guidelines for designating a
new
HMC to be
the master
HMC for
a pool:
- Whenever possible, use the current master HMC of a pool to set a
new master HMC for
the pool. You must use the current HMC to set a new master HMC if the current master HMC is running.
- You must use the latest configuration file for the pool to set
a new master HMC for
the pool when the master HMC is
down and one of the following conditions also applies:
- The new master HMC is
not configured as the backup master HMC for the pool.
- The new master HMC that
is configured as the backup master HMC for the pool does not
have valid backup data for the pool.
Whenever possible, ensure that you meet the following prerequisites:- Ensure that all of the servers that participate in the pool are
connected to the new master HMC.
- Ensure that the participating servers are in either the standby
state or the operating state.
- Set a new master HMC before
you perform a clean installation of the current master HMC.
You can view information for a pool from any
HMC that manages the pool.
You must perform all other pool operations from the master
HMC of the pool.
Note: The HMC that you use to manage
the pool must have a connection to the master HMC. If it does not, the
amount and type of information that you can view might be limited.
To
configure a backup master
HMC for
a pool, complete the following steps:
- From the master HMC for
the pool, select Systems Management > Power Enterprise
Pools.
- In the left navigation pane, select the pool name and then select General
Pool Properties.
To set a new master
HMC for a pool, complete
the following steps:
View history logs
The master HMC for a Power Enterprise Pool maintains a
history log of the Mobile CoD resource usage in the pool. Other Power Enterprise Pool related events
that have occurred are also recorded in this history log.
To
view the history log for a pool, complete the following steps:
- From the master HMC for
the pool, select Systems Management > Power Enterprise
Pools.
- In the left navigation pane, select the pool name and then select View
Pool History Log.
Each server maintains a history log of the CoD events that have
occurred on the server. Mobile CoD resource usage and other
Power Enterprise Pool related events
are recorded in this history log.
To view the history log for
a server, complete the following steps:
- From an HMC managing
the server, select Systems Management > Power Enterprise
Pools.
- In the left navigation pane, select the pool name and then select Processor
Resources.
- In the Server Processor Information table, right-click
on the server and select View Server History Log.
The history log for a server can also be accessed from the Memory
Resources screen.
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