IBM Z9, Planning Manual

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Overview
This chapter describes the panels and tasks that can be used to monitor LP activity.
It also provides LP performance information and provides guidelines and
suggestions for planning a recovery strategy for operation.
Monitoring Logical Partition Activity
In addition to viewing LP information located in the General, Processor, Security,
Storage, Load, and Channels pages of an LP’s reset, image, and load profiles, you
can use the following tasks to further monitor LP activity:
v Current storage information
v Current channel information
v Current System activity profile information
Reviewing Current Storage Information
Use the Storage Information task available from the CPC Operational Customization
tasks list to open the Storage Information task to display LP storage information for
LPs currently activated on the CPC.
For this example, assume the amount of installed storage is 32768 (32 GB). The
amount of physical central storage used by hardware system area (HSA) is 1280
MB leaving 32488 MB of physical storage for allocation to LPs. The addressable
range used for HSA is 2176 MB so the size of addressable storage for LP allocation
is 1046400 MB.
Figure 5-1. Storage Information Task. This example shows two partitions active. LP02 has 4096 MB of initial central
storage and 2048 MB of initial expanded storage. LP01 has 1024 MB of initial central storage, 1024 MB of reserved
central storage and 1024 MB of initial expanded storage. LP01 was activated first, without any expanded storage.
Then, LP02 was activated and LP01 was activated again with expanded storage.
Note: The central storage addressability required for LP01’s expanded storage is not necessarily contiguous to the
CS addressability for LP01’s initial or reserved central storage.
5-2
PR/SM Planning Guide