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...
Page 6 - Additional memory allocation in a partitioned environment; Hypervisor; Hypervisor and TCE
6 Hardware Management Console (HMC) Case Configuration Study for LPAR Management multi-threading. SMT is a feature supported only in AIX 5.3 and Linux at an appropriate level. Multiple operating system support: Logical partitioning allows a single server to run multiple operating system images con...
Page 7 - Figure 1 Using LVT to validate the LPAR configuration
Hardware Management Console (HMC) Case Configuration Study for LPAR Management 7 To calculate your desired and maximum memory values accurately, we recommend that you use the LVT tool. This tool is available at: http://www.ibm.com/servers/eserver/iseries/lpar/systemdesign.htm Figure 1 shows an examp...
Page 9 - Table 4 Partition parameters; Parameter
Hardware Management Console (HMC) Case Configuration Study for LPAR Management 9 Micro-partitioning With POWER5 systems, increased flexibility is provided for allocating CPU resources by using micropartitioning features. The following parameters can be set up on the HMC: Dedicated/shared mode, whi...
Page 10 - Capacity on Demand
10 Hardware Management Console (HMC) Case Configuration Study for LPAR Management Capacity on Demand The Capacity on Demand (CoD) for POWER5 systems offers multiple options, including: Permanent Capacity on Demand: – Provides system upgrades by activating processors and/or memory. – No special con...
Page 11 - HMC sample scenarios; The following examples illustrate POWER5 advance features.
Hardware Management Console (HMC) Case Configuration Study for LPAR Management 11 HMC sample scenarios The following examples illustrate POWER5 advance features. Examples of using capped/uncapped, weight, dynamic LPAR and CoD features Our case study describes different possibilities to take advantag...
Page 12 - Figure 4 Initial configuration; available for our partitions.; Table 5 CPU and memory allocation table; Cluster
12 Hardware Management Console (HMC) Case Configuration Study for LPAR Management Figure 4 Initial configuration Table 5 shows our configuration in detail. Our test system has only one 4-pack DASD available. Therefore we installed a VIO server to have sufficient disks available for our partitions. T...
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
Hardware Management Console (HMC) Case Configuration Study for LPAR Management 13 Table 6 Memory allocation Enabling ssh access to HMC By default, the ssh server on the HMC is not enabled. The following steps configure ssh access for node julia on HMC. The procedure will allow node julia to run HMC ...
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
14 Hardware Management Console (HMC) Case Configuration Study for LPAR Management HMC Configuration. In the right panel select Customize Network Setting, press the LAN Adapters tab, choose the interface used for remote access and press Details. In the new window select the Firewall tab. Check that t...
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
Hardware Management Console (HMC) Case Configuration Study for LPAR Management 15 openssh.msg.en_US 3.8.0.5302 C F Open Secure Shell Messages - Log in the user account used for remote access to the HMC. Generate the ssh keys using the ssh-keygen command. In Example 2, we used the root user account...
Page 16 - Figure 7 CoD and dynamic LPAR operations after takeover; Enabling On/Off CoD for processor and memory; Manage on Demand Activations; takeover
16 Hardware Management Console (HMC) Case Configuration Study for LPAR Management Now, we force node nils to fail and prepare to start the takeover scenario (see Figure 7). Figure 7 CoD and dynamic LPAR operations after takeover Enabling On/Off CoD for processor and memory Before activating the CPU ...
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
Hardware Management Console (HMC) Case Configuration Study for LPAR Management 17 Figure 8 Activating the On/Off CoD Activating On/Off CoD using the command line interface. Example 4 shows how node julia activates 2 CPUs and 8 GB of RAM for 3 days by running via ssh the command chcod on the HMC. E...
Page 18 - Figure 9 Performing dynamic LPAR operation for CPU; lshwres
18 Hardware Management Console (HMC) Case Configuration Study for LPAR Management In order for node julia to operate with the same resources as node nils had, we have to add 1.8 processing units and 6.5 GB memory to this node. Allocation of processor units. – Using the graphical user interface. In...
Page 19 - Example 5 Perform the CPU addition from the command line; Adding the additional memory to the partition:; Memory Resources
Hardware Management Console (HMC) Case Configuration Study for LPAR Management 19 Example 5 Perform the CPU addition from the command line root@julia/>lsdev -Cc processorproc0 Available 00-00 Processor root@julia/>ssh hscroot@hmctot184 lshwres -r proc -m p550_itso1 --level\ \>lpar --filter ...
Page 20 - Figure 10 Add memory to partition; – Using the command line.; Example 6 Memory allocation using command line interface
20 Hardware Management Console (HMC) Case Configuration Study for LPAR Management Figure 10 Add memory to partition – Using the command line. Example 6 shows how to allocate 6 GB of memory to par tition julia. Example 6 Memory allocation using command line interface root@julia/>lsattr -El mem0goo...
Page 21 - enter the desired amount of memory to remove as shown in Figure 11.; Figure 11 Removing memory from partition
Hardware Management Console (HMC) Case Configuration Study for LPAR Management 21 At the time node nils is back and ready to reacquire the applications running on node julia, we reduce the memory and CPU to the initial values and turn off CoD. In order for node julia to operate with the initial reso...
Page 22 - Processor Resources
22 Hardware Management Console (HMC) Case Configuration Study for LPAR Management – Using the command line interface. Example 7 shows how to deallocate via the command line 6 GB of memory from node julia. Example 7 Deallocating the memory using the command line interface (CLI) root@julia/>lsattr ...
Page 23 - Figure 12 Perform the deallocation for the CPU units; node julia is shown in Example 8.; Example 8 Deallocating the CPU
Hardware Management Console (HMC) Case Configuration Study for LPAR Management 23 Figure 12 Perform the deallocation for the CPU units – Using the command line interface to remove 1.8 processing units from node julia is shown in Example 8. Example 8 Deallocating the CPU root@julia/>lsdev -Cc proc...
Page 24 - Considerations for capped/uncapped partitions; Example of using a single uncapped partition; In the above scenario,
24 Hardware Management Console (HMC) Case Configuration Study for LPAR Management 2. Deactivating the On/Off CoD for CPU and memory. For an example of the graphical interface, refer to the menu presented in Figure 8 on page 17, and the section “Activating On/Off CoD using the command line interface....
Page 25 - Figure 13 Toggle the Capped/Uncapped option; physc; parameter; Example 10 Output of topas -L
Hardware Management Console (HMC) Case Configuration Study for LPAR Management 25 Figure 13 Toggle the Capped/Uncapped option You have to consider the number of virtual processors to be able to use all the CPUs from the shared processor pool. In our example, after the CoD operation, we have 3.0 avai...
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
26 Hardware Management Console (HMC) Case Configuration Study for LPAR Management Example of using two uncapped partitions and the weight For the example of two uncapped partitions using the same shared processor pool, we use the configuration described in Table 7. Table 7 CPU allocation table We cr...
Page 27 - Figure 14 Dynamically changing the weight of the partition
Hardware Management Console (HMC) Case Configuration Study for LPAR Management 27 Cpu2 0 0 757 771 699 6 100 15 100 0 0 0 0.37 2172Cpu3 0 0 712 712 698 6 100 27 100 0 0 0 0.37 2178 We changed the weight for the partition oli to the maximum value 255 while partition julia is set to 128. The operation...
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
28 Hardware Management Console (HMC) Case Configuration Study for LPAR Management Cpu2 0 0 756 740 700 8 100 19 100 0 0 0 0.42 2683Cpu3 0 0 702 703 699 8 100 2 100 0 0 0 0.41 2652 In Example 13 and Example 14 the physc parameter has different values for the two nodes. Example 14 Output of topas -L o...
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
Hardware Management Console (HMC) Case Configuration Study for LPAR Management 29 Node oli has increased processing loads during the workday: 7 AM to 7 PM and it is idle most of the time outside this interval. Partition julia has an increased processing load during 10 PM to 5 AM and is idle the rest...
Page 30 - Figure 16 Selecting the scheduled operation
30 Hardware Management Console (HMC) Case Configuration Study for LPAR Management Figure 16 Selecting the scheduled operation 3. Next, in the Date and Time tab, select the time for the beginning of the operation and a time window where the operation can be started as shown in Figure 17. Figure 17 Se...
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.
Hardware Management Console (HMC) Case Configuration Study for LPAR Management 31 Figure 18 Selecting the days of the week for the schedule 5. Click on the Options tab and specify the details of the dynamic LPAR operation as shown in Figure 19. Figure 19 Specifying the details of the dynamic LPAR op...
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
32 Hardware Management Console (HMC) Case Configuration Study for LPAR Management 6. Repeat steps 1 through 5 for creating the reverse operation, specifying julia the target partition for the scheduled operation, and 06:00:00 AM for the start window of the scheduler. 7. After setting up both operati...
Page 33 - Comparing profile values with current settings; Example 15 Monitoring sample script
Hardware Management Console (HMC) Case Configuration Study for LPAR Management 33 Comparing profile values with current settings If you perform a dynamic LPAR operation and you want to make this change permanent, you have to do maintenance on the appropriate profile. Otherwise, after the next shutdo...
Page 34 - Example 16 Monitoring sample script output
34 Hardware Management Console (HMC) Case Configuration Study for LPAR Management }; }; };}; Here is a sample output from the script shown in Example 15 on page 33. Example 16 Monitoring sample script output julia:/home/romeo # ./compare_profile_current hmc1 cec-blue blue5 min_mem: prof= 1024 hmc1 c...
Page 35 - High availability considerations for HMCs; Working with redundant HMCs
Hardware Management Console (HMC) Case Configuration Study for LPAR Management 35 hmc2 cec-green green2 max_mem: prof= 32768 hmc2 cec-green green2 max_procs: prof= 4 hmc2 cec-green green2 min_procs: prof= 1 hmc2 cec-green green2 des_procs: prof= 2 hmc2 cec-green green3 min_mem: prof= 2048 hmc2 cec-g...
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
36 Hardware Management Console (HMC) Case Configuration Study for LPAR Management Working with two HMCs eases the planning of HMC downtimes for software maintenance, as there is no downtime needed. While doing the HMC code update on one HMC, the other one continues to manage the environment. This si...
Page 38 - Network Configuration. Using the menu; Figure 24 Configuring the FSP IP address using the ASMI menu
38 Hardware Management Console (HMC) Case Configuration Study for LPAR Management A new system is shipped with a default IP-addresses. You can change these IP-addresses by connecting your laptop to either T1 or T2 of the CEC. Assign an IP-address to your laptop’s interface that is in the same networ...
Page 39 - Figure 25 Add managed systems window; For this configuration you have to consider a couple of things:
Hardware Management Console (HMC) Case Configuration Study for LPAR Management 39 For more detailed information, refer to “Access to the ASMI menu” on page 40“. On HMC1, the managed system becomes automatically visible. On HMC2, the managed system must be added manually. To add a managed system, sel...
Page 40 - APPENDIX; Access to the ASMI menu; In the HMC main panel, select Service Application
40 Hardware Management Console (HMC) Case Configuration Study for LPAR Management APPENDIX The following sections contain additional information to be considered when dealing with HMCs. Access to the ASMI menu Depending on your network connection to the FSP interfaces, you have several possibilities...
Page 41 - Figure 26 Accessing the ASMI menu using WebSM; Configuring a secure connection for WebSM
Hardware Management Console (HMC) Case Configuration Study for LPAR Management 41 Figure 26 Accessing the ASMI menu using WebSM For further information related to the access to the ASMI menus, refer to the “ASMI Setup Guide” at: http://publib.boulder.ibm.com/infocenter/eserver/v1r2s/en_US/info/iphby...
Page 42 - Figure 27 Defining the certificate authority
42 Hardware Management Console (HMC) Case Configuration Study for LPAR Management Access the secure WebSM download page and run the InstallShield program for your platform: http://<hmchost>/remote_client_security.html Verify the WebSM installation by starting the WebSM client program and con...
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
Hardware Management Console (HMC) Case Configuration Study for LPAR Management 43 For our example, we perform the following actions: – Enter an organization name: ITSO. – Verify the certificate expiration date is set to a future date. – Click the OK button, and a password is requested at the end of ...
Page 44 - Figure 29 Installing the local private key on the HMC
44 Hardware Management Console (HMC) Case Configuration Study for LPAR Management At this menu: – Add both HMCs in the list of servers (the current HMC should already be listed): hmctot184.itso.ibm.com, hmctot182.itso.ibm.com – Enter the organization name: ITSO. – Verify that the certificate expirat...
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
Hardware Management Console (HMC) Case Configuration Study for LPAR Management 45 Figure 30 Copying the private key ring file to removable media Copy the private key from removable media to the second HMC. Insert the removable media in the second HMC. From the HMC menu select: System Manager Secur...
Page 46 - Figure 31 Installing the private key ring file for the second HMC; Certificate Authority,
46 Hardware Management Console (HMC) Case Configuration Study for LPAR Management Figure 31 Installing the private key ring file for the second HMC Copy the public key ring file to removable media for installing the key file on the client PC. Select System Manager Security → 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.
Hardware Management Console (HMC) Case Configuration Study for LPAR Management 47 Figure 32 Save the public key ring file to removable media You will be provided with a second window to specify the format of the file to be saved. Depending on the platform of the WebSM client, you can select either: ...
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
48 Hardware Management Console (HMC) Case Configuration Study for LPAR Management Figure 33 Select the security option for the authentication Select one of the two options: – Always use a secure connection: Only an SSL connection is allowed. – Allow the user to choose secure or unsecure connections:...
Page 49 - Figure 35 WebSM logon panel; Enabling NTP on the HMC
Hardware Management Console (HMC) Case Configuration Study for LPAR Management 49 Next, go to each of your remote clients and copy the PUBLIC key ring file into the “codebase” directory under WebSM. When you log in via WebSM, you will get information if the SSL connection is available or not. Veri...
Page 52 - Important: Two files must be found at the indicated location:
52 Hardware Management Console (HMC) Case Configuration Study for LPAR Management 3. We downloaded the microcode image to an FTP server, so we specify as LIC Repository FTP Site (Figure 38). Figure 38 Specify the microcode location 4. In the details window, enter the IP address of the FTP server, us...
Page 53 - Referenced Web sites; Latest HMC code updates:
Hardware Management Console (HMC) Case Configuration Study for LPAR Management 53 5. You are provided with a new window which displays the current and the target release of the firmware (see Figure 40). Click OK to star t the upgrade process. Figure 40 Upgrade information The update process might ta...
Page 55 - The team that wrote this Redpaper
Hardware Management Console (HMC) Case Configuration Study for LPAR Management 55 The team that wrote this Redpaper This Redpaper was produced by a team of specialists from around the world working at the International Technical Support Organization, Austin Center. Dino Quintero is a Consulting IT S...
Page 57 - Notices
© Copyright IBM Corp. 2005. All rights reserved. 57 Notices This information was developed for products and services offered in the U.S.A. IBM may not offer the products, services, or features discussed in this document in other countries. Consult your local IBM representative for information on the...
Page 58 - Use the online Contact us review redbook form found at:; Trademarks; Eserver
58 Hardware Management Console (HMC) Case Configuration Study for LPAR Management, and This document was created or updated on February 23, 2006. Send us your comments in one of the following ways: Use the online Contact us review redbook form found at: ibm.com/redbooks Send your comments in an ...
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