IBM Computer Hardware - Manual

IBM Computer Hardware

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Table of Contents:

  • Page 3 – Type; POWER4 or POWER5; Managed system; Yes
  • Page 4 – Table 3 HMC history; HMC connections; HMC code; iSeries Only
  • Page 5 – Partitioning considerations; Note: Either eth0 or eth1 can be a DHCP server on the HMC.
  • Page 6 – Additional memory allocation in a partitioned environment; Hypervisor; Hypervisor and TCE
  • Page 7 – Figure 1 Using LVT to validate the LPAR configuration
  • Page 9 – Table 4 Partition parameters; Parameter
  • Page 10 – Capacity on Demand
  • Page 11 – HMC sample scenarios; The following examples illustrate POWER5 advance features.
  • Page 12 – Figure 4 Initial configuration; available for our partitions.; Table 5 CPU and memory allocation table; Cluster
  • Page 13 – Table 6 Memory allocation; Enabling ssh access to HMC; Enabling the remote command execution on HMC.; In the management area of the HMC main panel, select HMC Management; Figure 5 Enabling remote command execution on HMC; Partition name; oli
  • Page 14 – Figure 6 Firewall settings for eth1 interface; Install the ssh client on the AIX node:; lslpp; command on the AIX node, as shown in Example 1.; Example 1 Check openssh filesets are installed
  • Page 15 – command. In Example 2, we used the root; Example 2 ssh-keygen output; mkauthkeys; command to register the key for the hscroot account. The key; Example 3 Distribute the public key to the HMC
  • Page 16 – Figure 7 CoD and dynamic LPAR operations after takeover; Enabling On/Off CoD for processor and memory; Manage on Demand Activations; takeover
  • Page 17 – Figure 8 Activating the On/Off CoD; Activating On/Off CoD using the command line interface.; chcod; Example 4 Activating CoD using command line interface
  • Page 18 – Figure 9 Performing dynamic LPAR operation for CPU; lshwres
  • Page 19 – Example 5 Perform the CPU addition from the command line; Adding the additional memory to the partition:; Memory Resources
  • Page 20 – Figure 10 Add memory to partition; – Using the command line.; Example 6 Memory allocation using command line interface
  • Page 21 – enter the desired amount of memory to remove as shown in Figure 11.; Figure 11 Removing memory from partition
  • Page 22 – Processor Resources
  • Page 23 – Figure 12 Perform the deallocation for the CPU units; node julia is shown in Example 8.; Example 8 Deallocating the CPU
  • Page 24 – Considerations for capped/uncapped partitions; Example of using a single uncapped partition; In the above scenario,
  • Page 25 – Figure 13 Toggle the Capped/Uncapped option; physc; parameter; Example 10 Output of topas -L
  • Page 26 – Example of using two uncapped partitions and the weight; Table 7 CPU allocation table; Example 11 and Example 12 are the outputs of the; Example 12 Output of topas -L from node julia; Weight
  • Page 27 – Figure 14 Dynamically changing the weight of the partition
  • Page 28 – In Example 13 and Example 14 the; parameter has different values for the; Example 14 Output of topas -L on node julia; Automating HMC tasks; Table 8 CPU and memory allocation table
  • Page 29 – On the HMC main configuration panel, select HMC Management; Figure 15 Selecting the target partition; In the Customize Scheduled Operations window, select Options
  • Page 30 – Figure 16 Selecting the scheduled operation
  • Page 31 – Figure 18 Selecting the days of the week for the schedule; operation as shown in Figure 19.; Figure 19 Specifying the details of the dynamic LPAR operation; Click on the Save button to activate the scheduler.
  • Page 32 – Figure 20 Current scheduled operations for node oli; Events Log, by selecting HMC Management; Figure 21 Verifying the completion of the scheduled operation
  • Page 33 – Comparing profile values with current settings; Example 15 Monitoring sample script
  • Page 34 – Example 16 Monitoring sample script output
  • Page 35 – High availability considerations for HMCs; Working with redundant HMCs
  • Page 36 – High availability HMCs in various network environments; Two HMCs on different private networks are shown in Figure 22.; Figure 22 HMCs connected to the SFP using 2 networks
  • Page 38 – Network Configuration. Using the menu; Figure 24 Configuring the FSP IP address using the ASMI menu
  • Page 39 – Figure 25 Add managed systems window; For this configuration you have to consider a couple of things:
  • Page 40 – APPENDIX; Access to the ASMI menu; In the HMC main panel, select Service Application
  • Page 41 – Figure 26 Accessing the ASMI menu using WebSM; Configuring a secure connection for WebSM
  • Page 42 – Figure 27 Defining the certificate authority
  • Page 43 – – Click the OK button, and a password is requested at the end of the; – Private keys will be installed on the HMCs.; Figure 28 Generate the private keys ring file
  • Page 44 – Figure 29 Installing the local private key on the HMC
  • Page 45 – Figure 30 Copying the private key ring file to removable media; Copy the private key from removable media to the second HMC.; Server Security. In the right window, select
  • Page 46 – Figure 31 Installing the private key ring file for the second HMC; Certificate Authority,
  • Page 47 – Figure 32 Save the public key ring file to removable media; – HMC or AIX client: A tar archive is created on the selected media.
  • Page 48 – Figure 33 Select the security option for the authentication; Select one of the two options:; Figure 34 Verify the system manager security status
  • Page 49 – Figure 35 WebSM logon panel; Enabling NTP on the HMC
  • Page 52 – Important: Two files must be found at the indicated location:
  • Page 53 – Referenced Web sites; Latest HMC code updates:
  • Page 55 – The team that wrote this Redpaper
  • Page 57 – Notices
  • Page 58 – Use the online Contact us review redbook form found at:; Trademarks; Eserver
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Red

books

P a p e r

© Copyright IBM Corp. 2005. All rights reserved.

ibm.com/redbooks

1

Hardware Management Console
(HMC) Case Configuration Study for
LPAR Management

This IBM® Redpaper provides Hardware Management Console (HMC)
configuration considerations and describes case studies about how to use the
HMC in a production environment. This document does not describe how to
install the HMC or how to set up LPARs. We assume you are familiar with the
HMC. Rather, the case studies presented in this Redpaper provide a framework
to implement some of the more useful HMC concepts. It provides examples to
give you ideas on how to exploit the capabilities of the HMC.

The topics discussed in this Redpaper are:

򐂰

Basic HMC considerations

򐂰

Partitioning considerations

򐂰

Takeover case study:

– Description of the scenario
– Setting up remote ssh connection to the HMC
– Using the HMC to perform CoD operations
– Examples of dynamic LPAR operations
– Using micropartitioning features
– Security considerations

Dino Quintero

Sven Meissner

Andrei Socoliuc

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Summary

Page 3 - Type; POWER4 or POWER5; Managed system; Yes

Hardware Management Console (HMC) Case Configuration Study for LPAR Management 3 Table 1 Types of HMCs The HMC 3.x code version is used for POWER4 managed systems and HMC 4.x for POWER5 systems (iSeries™ and pSeries®). For managing POWER5 pSeries machines, HMC 4.2 code version or later is required. ...

Page 4 - Table 3 HMC history; HMC connections; HMC code; iSeries Only

4 Hardware Management Console (HMC) Case Configuration Study for LPAR Management The maximum number of HMCs supported by a single POWER5 managed system is two. The number of LPARs managed by a single HMC has been increased from earlier versions of the HMC to the current supported release as shown in...

Page 5 - Partitioning considerations; Note: Either eth0 or eth1 can be a DHCP server on the HMC.

Hardware Management Console (HMC) Case Configuration Study for LPAR Management 5 menus. However not all POWER5 servers support this mechanism of allocation. Currently p575, p590, and p595 servers support only DHCP. 򐂰 HMC to partitions: HMC requires TCP/IP connection to communicate with the partition...

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