Partitioning Tools - Virtual Partition Manager

• Partitioning Tools - Virtual Partition Manager
• Aix - Partitioning Tools - Virtual Partition Manager.



The Virtual Partition Manager is a feature of i5/OS that allows you to create and manage one i5/OS logical partition and up to four Linux logical partitions on a single IBM System i5 or eServer i5 server. You can use the Virtual Partition Manager to partition any IBM System i5 or eServer i5 model that does not require a Hardware Management Console (HMC), such as a model 595.

Partitioning Tools - Integrated Virtualisation Manager

• Partitioning Tools - Integrated Virtualisation Manager
• Aix - Partitioning Tools - Integrated Virtualisation Manager

The Integrated Virtualization Manager is a browser-based system management interface for the Virtual I/O Server. The Integrated Virtualization Manager allows you to create and manage AIX and Linux logical partitions on a single IBM System p server. On Open Power servers, the Integrated Virtualization Manager supports only Linux logical partitions.

Logical Partitioning - Virtual Processor Assignment

• Logical Partitioning - Virtual Processor Assignment
• Aix - Logical Partitioning - Virtual Processor Assignment

If you create a partition profile that is set to use shared processors, the HMC calculates a minimum, maximum, and desired number of virtual processors for
the partition profile. The calculation is based upon the minimum, maximum, and desired number of processing units that you specify for the partition profile. By default, the virtual processor settings are calculated as follows:

• The default minimum number of virtual processors is the minimum number of processing units (rounded up to the next whole number). For example, if the minimum number of processing units is 0.8, the default minimum number of virtual processors is 1.

• The default desired number of virtual processors is the desired number of processing units (rounded up to the next whole number). For example, if the desired number of processing units is 2.8, the default desired number of virtual processors is 3.

• The default maximum number of virtual processors is the maximum number of processing units rounded up to the next whole number and multiplied by two. For example, if the maximum number of processing units is 3.2, the default maximum number of virtual processors is 8 (4 times 2).

When you activate the logical partition using the partition profile on the HMC, the logical partition is assigned the desired number of virtual processors. You can then use dynamic logical partitioning to change the number of virtual processors to any number between the minimum and maximum values, so long as the number of virtual processors is greater than the number of processing units that are assigned to the logical partition. Before changing the default settings, performance modeling should be performed.

For example, you create a partition profile on the HMC with the following processor unit settings.
• Minimum processing units 1.25
• Desired processing units 3.80
• Maximum processing units 5.00

The default virtual processor settings for this partition profile on the HMC are as follows.
• Minimum virtual processors 2
• Desired virtual processors 4
• Maximum virtual processors 10


When you activate the logical partition using this partition profile on the HMC, the operating system sees four processors, because the logical partition is activated with the desired value of four virtual processors. Each of these virtual processors has 0.95 processing units supporting the work assigned to the processor. After the logical partition is activated, you can use dynamic logical partitioning to change the number of virtual processors on the logical partition to any number between 2 and 10, so long as the number of virtual processors is greater than the number of processing units that are assigned to the logical partition. If you increase the number of virtual processors, bear in mind that you will have less processing power supporting the work assigned to each processor.

Logical Partitioning - System Profile

Logical Partitioning - System Profile
Aix - Logical Partitioning - System Profile


• A system profile is an ordered list of partition profiles that is used by the Hardware Management Console (HMC) to start the logical partitions on a managed system in a specific configuration.
• When you activate the system profile, the managed system attempts to activate each partition profile in the system profile in the order specified. A system profile helps you activate or change the managed system from one complete set of logical partition configurations to another.
• It is possible for you to create a system profile whose partition profiles specify more resources than are available on the managed system. You can use the HMC to validate the system profile against the currently available system resources and against the total system resources. Validating your system profile ensures that your I/O devices and processing resources are not overcommitted and it increases the likelihood that the system profile can be activated. The validation process estimates the amount of memory needed to activate all of the partition profiles in the system profile. It is possible that a system profile can pass validation and yet not have enough memory to be activated.

Logical Partitioning - Running integrated clusters

• Logical Partitioning - Running integrated clusters
• Aix - Logical Partitioning - Running integrated clusters

Using high-availability application software, your partitioned server can run as an integrated cluster. You can use an integrated cluster to protect your server from most unscheduled failures within a partition.

Logical Partitioning - Partitioning Tools

• Logical Partitioning - Partitioning Tools
Aix - Logical Partitioning - Partitioning Tools

ou must use tools to partition your servers. The tool that you use to partition each server depends upon the server model and the operating systems and
features that you want to use on the server.

• Hardware Management Console
• Integrated Virtualisation Manager
• Virtual Partition Manag

Logical Partitioning - Partition Profile

• Logical Partitioning - Partition Profile
• Aix - Logical Partitioning - Partition Profile

A partition profile is a record on the Hardware Management Console (HMC) that
specifies a possible configuration for a logical partition. When you activate a
logical partition using a partition profile, the managed system attempts to start
the logical partition using the configuration information in the partition profile.
A partition profile specifies the desired system resources for the logical partition
and the minimum and maximum amounts of system resources that the logical
partition can have. The system resources specified within a partition profile
includes processors, memory, and I/O resources.

Each logical partition on a managed system that is managed by an HMC has at
least one partition profile. If desired, you can create additional partition profiles
with different resource specifications for your logical partition. If you create
multiple partition profiles, you can designate any partition profile on the logical
partition to be the default partition profile. The HMC activates the default profile if
you do not select a specific partition profile to be activated. Only one partition
profile can be active at one time. To activate another partition profile for a logical
partition, you must shut down the logical partition before you activate the other
partition profile.

A partition profile is identified by partition ID and profile name. Partition IDs are
whole numbers used to identify each logical partition that you create on a
managed system, and profile names identify the partition profiles that you create
for each logical partition.

Logical Partitioning - Merging production and test environments

• Logical Partitioning - Merging production and test environments
• Aix - Logical Partitioning - Merging production and test environments

Partitioning enables separate partitions to be allocated for production and test servers, eliminating the need to purchase additional hardware and software.When testing has been completed, the resources allocated to the test partition can be returned to the production partition or elsewhere as required. As new projects are developed, they can be built and tested on the same hardware on which they will eventually be deployed.

Logical Partitioning - Memory and Processor Resource Assignment

• Logical Partitioning - Memory and Processor Resource Assignment
• Aix - Logical Partitioning - Memory and Processor Resource Assignment
• When you create a partition profile for a logical partition, you set up the desired,minimum, and maximum amounts of memory and processor resources that you want for the logical partition. (Where applicable, this also applies to 5250 CPW.)The desired value is the resource amount that the logical partition gets if you do not over commit the resource on the managed system. If the desired amount of resources is available when you activate the partition profile, then the logical partition starts with the desired amount of resources. However, if the desired amount of resources is not available when you activate the partition profile, then the resources on your managed system are over committed. In that case, if the amount of resources that are available on the managed system is equal to or greater than the minimum amount of resources in the partition profile, then the logical partition starts with the available amount of resources. If the minimum amount of resources is not met, then the logical partition does not start.

Logical Partitioning - Maintaining Independent Servers

• Logical Partitioning - Maintaining Independent Servers
• Aix - Logical Partitioning - Maintaining Independent Servers

Logical isolation of software can be achieved by dedicating a portion of the resources (disk storage unit, processors, memory, and I/O devices) to a partition Software’s which might not run well together on a single machine, can be isolated and run efficiently in separate partitions.Logical partitions also have some hardware fault tolerance.

Logical Partitioning - I/O device assignment

Logical Partitioning - I/O device assignment
Aix - Logical Partitioning - I/O device assignment

• I/O devices are assigned to partition profiles on a slot-by-slot basis. Most I/O devices can be assigned to a partition profile on the HMC as required or as desired.
• If an I/O device is assigned to a partition profile as required, then the partition profile cannot be successfully activated if the I/O device is unavailable or is in use by another logical partition. Also, after the logical partition starts, you cannot use dynamic logical partitioning to remove the required I/O device from the running logical partition or move the required I/O device to another logical partition. This setting is suitable for devices that are required for the continuous operation of the logical partition (such as disk drives).
• If an I/O device is assigned to a partition profile as desired, then the partition profile can be successfully activated if the I/O device is unavailable or is in use by another logical partition. The desired I/O device can also be reconfigured in the operating system or system software and removed from the running logical partition or moved to another logical partition using dynamic logical partitioning. This setting is suitable for devices that you want to share among
multiple logical partitions (such as optical drives or tape drives). You can change the required or desired setting within any partition profile for any I/O device at any time. Changes to the required or desired setting for an I/O device take effect immediately, even if the logical partition is running. For example, you want to move a tape device from one running logical partition to
another, and the I/O device is required in the active partition profile for the source logical partition. You can access the active partition profile for the source logical partition, set the tape device to be desired, and then reconfigure and move the tape device to the other logical partition without having to restart either logical partition.

Logical Partitioning - Creating a mixed production and test environment

Logical Partitioning - Creating a mixed production and test environment
Aix - Logical Partitioning - Creating a mixed production and test environment


We can create a combined production and test environment on the same server. The production partition can run your main business applications, and the test partition is used to test software. A failure in a test partition, while not necessarily planned, will not disrupt normal business operations.

Logical Partioning - How resources are shared

Logical Partioning - How resources are shared
Following are the ways in which resources are shared

Micro-Partitioning feature allows processor resources to be shared automatically among logical partitions that use the shared processor pool. The shared processor pool includes all processors on the server that are not dedicated to specific logical partitions. Each logical partition that uses the shared processor pool is assigned a specific amount of processor power from the shared processor pool. If the logical partition needs more processor power than its assigned amount, the logical partition is set by default to use the unused processor power in the shared processor pool. The amount of processor power that the logical partition can use is limited only by the virtual processor settings of the logical partition and the amount.

Limitations of Logical partitioning

Limitations of Logical partitioning
AIX - Limitations of Logical partitioning


•Processor and memory failures might result in the failure of the entire server with all of its logical partitions. (The failure of a single I/O device affects only the logical partition to which the I/O device belongs.)
• There are many concepts that we must understand to implement logical partitions successfully on server.
• Administering a consolidated system might be more difficult in some ways than administering multiple smaller systems, particularly if the resources in the consolidated system are used at a level close to their capacity. Sharing resources.

AIX - Introduction to Logical Partitioning

AIX - Introduction to Logical Partitioning
1. What is logical partitioning?

Logical partitioning is the ability to make a server run as if it were two or more independent servers. When you logically partition a server, you divide the resources on the server into subsets called logical partitions or LPAR We can install different operating system on each logical partition, and each logical partition runs as an independent logical server with independent operating system and the resources that you have allocated to the logical partition. Processors, memory, and input/output devices are examples of resources that you can assign to logical partitions. Following are the Operating systems which can be installed on each independent Logical partition.

AIX,

i5/OS,

Linux operating systems and Virtual I/O Server.

All the Logical partitions partitioned from a single server share a few system attributes, such as the system serial number, system model, and processor feature code. All other system attributes on each Logical partition can vary from one logical partition to another.

AIX - Dynamic logical partitioning

AIX - Dynamic logical partitioning
Dynamic logical partitioning feature allow resources to be moved to, from, and between running logical partitions manually without shutting down or restarting the logical partitions. This allows us to share devices that logical partitions use occasionally. For example, if the logical partitions on your server use an optical drive occasionally, you can assign a single optical drive to multiple logical partitions as a desired device. The optical drive would belong to only one logical partition at a time, but you can use dynamic logical partitioning to move the optical drive between logical partitions as needed. On servers that are managed using the Integrated Virtualization Manager, dynamic logical partitioning is supported only for the management partition. Dynamic logical partitioning is not supported on servers that are managed using the Virtual Partition Manager.

AIX - Advantages of Logical Partitioning

AIX - Advantages of Logical Partitioning
The following are benefits of logical partitioning on a server:

2.1 Consolidating servers

A logically partitioned server reduces the number of servers that are needed in an enterprise. We can consolidate many servers into a single logically partitioned system. This eliminates the use of additional equipment & expenses.

2.2 Sharing resources

The ability to share resources among many logical partitions allows us to increase resource utilization on the server and to move the server resources to where they are needed. We can easily move the hardware resources from one logical partition to another logical partitioning whenever we need.

AIX - LPAR / DLPAR

• AIX - LPAR / DLPAR
•

We can configure LPAR and DLPAR in P690 Servers,

LPAR (Logical partitions)

In single server we can install multiple operating systems, like AIX 5.1, AIX 5.2, AIX 5.3, Susi Linux, AIX 4.3, and using LPAR concept

The above Os are installing in single server, before that we have to partition the hardware resources, like processors and memory, Harddisk,

Using HMC (Hardware Management Console) we can partition and operate the LPAR servers

If you have one P690 server with 16 CPU’s and 16GB Ram, in this server we can make 16 partitions,

Now each partitions has 1 CPU and 1GB Ram,

If one particular Os assigned for 500 users that time we have to assign additional hardware resources to that partition, online we can assign the hardware resources using HMC. No need to reboot the server, this concept called DLPAR (dynamic Logical Partition)

Like this we can create the LPAR / DLPAR

HMC - it is a desktop pc (Linux OS) connected with P690 server through Communication (com port) cable or RJ45 Ethernet cat cable

Using HMC we can Create, Delete, and Change the Logical Partitions

This LPAR server has hypervisor Controller, all the information’s stored in this hypervisor, and it is used to maintain the server

Accessing methods:

1. wsm (Web based system management , using this concept we can access the LPAR servers from windows desktops)
2. ssh (Secured shell, using this concept we can access the LPAR servers through telnet)

To configure the HMC, do the following steps:

HMC
To configure the HMC, do the following steps:

1. Turn on the HMC by pressing the power button.

2. Wait for the HMC to automatically select the default language and locale preference.

3. Accept the HMC license agreements. If you decline the HMC license agreements, you cannot complete the HMC configuration.

4. Click Log on and launch the Hardware Management Console web application.

5. Log in to the HMC:

ID: hscroot

Password: abc123

The Guided Setup wizard opens.

6. Click OK on the Guided Setup entry window.

7. Complete the steps in the Guided Setup wizard. Click Yes to continue and complete the steps in the Connectivity and Call-Home Servers wizard.

8. On the Summary window, click Finish.

9. If you have not connected the Ethernet crossover cable to your managed system, do so now and power on the managed server.

10. In the HMC navigation area, click Service Management.

11. In the contents area, click Authorize User. The Authorize User window opens.

12. Enter your IBM® ID in the field and click OK.

Creating LPAR using SSH

Get the configuration data from existing LPAR

If you already have LPARs created you can use this command to get their configuration which can be reused as template:

lssyscfg -r prof -m SERVERNAME --filter "lpar_ids=X, profile_names=normal"

Create new LPAR using command line

Here is an example, for more information see '''man mksyscfg'''

mksyscfg -r lpar -m MACHINE -i name=LPARNAME, profile_name=normal, lpar_env=aixlinux, shared_proc_pool_util_auth=1, min_mem=512, desired_mem=2048, max_mem=4096, proc_mode=shared, min_proc_units=0.2, desired_proc_units=0.5, max_proc_units=2.0, min_procs=1, desired_procs=2, max_procs=2, sharing_mode=uncap, uncap_weight=128,boot_mode=norm, conn_monitoring=1, shared_proc_pool_util_auth=1

Create more LPARs using configuration file

If you want to create more LPARS at once you can use a configuration file and provide it as input for mksyscfg.

Here is an example for 3 LPARs, each definition starting at new line:

name=LPAR1,profile_name=normal,lpar_env=aixlinux,all_resources=0,min_mem=1024,desired_mem=9216,max_mem=9216,proc_mode=shared,min_proc_units=0.3,desired_proc_units=1.0,max_proc_units=3.0,min_procs=1,desired_procs=3,max_procs=3,sharing_mode=uncap,uncap_weight=128,lpar_io_pool_ids=none,max_virtual_slots=10,"virtual_scsi_adapters=6/client/4/vio1a/11/1,7/client/9/vio2a/11/1","virtual_eth_adapters=4/0/3//0/1,5/0/4//0/1",boot_mode=norm,conn_monitoring=1,auto_start=0,power_ctrl_lpar_ids=none,work_group_id=none,shared_proc_pool_util_auth=1
name=LPAR2,profile_name=normal,lpar_env=aixlinux,all_resources=0,min_mem=1024,desired_mem=9216,max_mem=9216,proc_mode=shared,min_proc_units=0.3,desired_proc_units=1.0,max_proc_units=3.0,min_procs=1,desired_procs=3,max_procs=3,sharing_mode=uncap,uncap_weight=128,lpar_io_pool_ids=none,max_virtual_slots=10,"virtual_scsi_adapters=6/client/4/vio1a/12/1,7/client/9/vio2a/12/1","virtual_eth_adapters=4/0/3//0/1,5/0/4//0/1",boot_mode=norm,conn_monitoring=1,auto_start=0,power_ctrl_lpar_ids=none,work_group_id=none,shared_proc_pool_util_auth=1
name=LPAR3,profile_name=normal,lpar_env=aixlinux,all_resources=0,min_mem=1024,desired_mem=15360,max_mem=15360,proc_mode=shared,min_proc_units=0.4,desired_proc_units=1.0,max_proc_units=4.0,min_procs=1,desired_procs=4,max_procs=4,sharing_mode=uncap,uncap_weight=128,lpar_io_pool_ids=none,max_virtual_slots=10,"virtual_scsi_adapters=6/client/4/vio1a/13/1,7/client/9/vio2a/13/1","virtual_eth_adapters=4/0/3//0/1,5/0/4//0/1",boot_mode=norm,conn_monitoring=1,auto_start=0,power_ctrl_lpar_ids=none,work_group_id=none,shared_proc_pool_util_auth=1

Copy this file to HMC and run:
mksyscfg -r lpar -m SERVERNAME -f /tmp/profiles.txt

To check the HMC version
lshmc -V

Eg:
Release: 3
Version: 2.5
HMC Build level 20031020.1

To check the HMC vital product data information
lshmc -v

Eg:
Vital Product Data Information:
*FC ????????
*VC 20.0
*N2 Mon Aug 20 13:12:39 BST 2007
*FC ????????
*DS pSeries Hardware Management Console
*TM eserver xSeries 335 -[7315CR2]-
*SE 651BABA
*MN IBM
*PN Unknow
*SZ 1055932416
*OS Linux 2.4.20-19.7
*NA 10.35.0.135
*FC ????????
*DS Platform Firmware
*RM R3V2.5

To check the HMC network configurations:
lshmc -n

To List last 2 days console log details
lssvcevents -t console -d 2

HMC Hints:
Power 4 HMC Commands


To view partition state:
get_partition_state

To pop a hung partiton into the debugger (aka 'soft reset'):
reset_partition -m -p -t soft

To force a reboot of a hung system (aka 'hard reset'):
reset_partition -m -p -t hard

To start a partition:
start_partition -p -f -m

To get a listing of boot profiles:
query_profile_names -m -p

Power 5 HMC Commands

To see system state for a system or the partitions on a system:
lssyscfg -r sys -m
lssyscfg -r lpar -m

To just see names and state:
lssyscfg -r lpar -m -F name,state --header

To power on an lpar with a profile:
chsysstate -m -o on -r lpar -n -f
i.e. for example:
chsysstate -m alpha -o on -r lpar -n alpha-lp1 -f default

To power on a whole machine (CEC):
chsysstate -m alpha -o on -r sys

Etc. chsysstate, lssyscfg and other commands have good explanations if they're run without arguments.

Issuing a 'soft reset', to push a hung machine into KDB/XMON, is not obvious. The magic incantation is:
chsysstate -r lpar -m -n -o dumprestart

To issue a 'hard reset', to turn off a partition, no matter what:
chsysstate -r lpar -m -n -o shutdown --immed --restart

To add one virtual CPU: (note these use -p instead of -n for the partition name)
chhwres -r proc -m -p -o a --procs 1

To add one-tenth of a cpu processing entitlement:
chhwres -r proc -m -p --procunits 0.1

HMC AND LPAR

HMC AND LPAR
HMC device is required to perform LPAR , DLPAR and CUOD configuration and management.
A single HMC can manage 48 i5 systems and 254 LPARs
In a partition there is a maximum no. of 64 virtual processors.
A mix of dedicated and shared processors within the same partition is not supported.
Sharing a pool of virtualized processors is known as Micro Partitioning technology
The maximum no.of physical processors on p5 is 64.
In Micro partition technology the minimum capacity is 1/10 processing units.
Virtual Ethernet enables inter partition communication without a dedicated physical network adapter.
The virtual IO server owns the real resources that are shared with other clients.
Shared Ethernet adapter is a new service that acts as a layer 2 network switch to route network traffic from a virtual Ethernet to a real network adapter.
On p5 – 595 Max no.of processors- 64, Max Memory Size – 2TB, Dedicated processor partitions-64, Shared processor partitions- 254.
HMC model for p5 – 595 is 7310-C04 or 7310-CR3
HMC Functions: LPAR, DLPAR, Capacity on demand without reboot, Inventory and microcode management, Remote power control.
254 partitions supported by one HMC.
A Partition Profile is used to allocate resources such as processing units, memory and IO cards to a partition. Several partition profiles may be created for the same partition.
System profile is a collection of partition profiles. A partition profile cannot be added to a system profile if the partition resources are already committed to another partition profile.
To change from one system profile to another, all the running partitions must be shutdown.
To find the current firmware level: lscfg –vp |grep –p ‘Platform Firmware:’
Simultaneous multi threading : The instructions from the OS are loaded simultaneously into the processor and executed.
DLPAR : DLPAR allows us to add, move or remove processors, memory and IO resources to, from or between active partitions manually without having to restart or shutdown the partition.
Unused processing units available in shared processor pool.
Dedicated processors are whole processors that are assigned to a single partition. The minimum no. of dedicated processors you must assign is one processor.
When a partition with dedicated processors is powered down, their processors will be available to the shared processor pool. This capability is enabled by “Allow idle processors to be shared”.
Idle processors from active partitions with dedicated processors can be used by any uncapped partition that requires additional processing units to complete its jobs.
Shared processor minimum processing unit is 0.1
Capped : The processor usage never exceeds the assigned processing capacity.
Uncapped : Processing capacity may be exceeded when the shared processor pool has spare processing units.
Weight is a number range between 0-255. If there are 3 processors available in the shared processor pool , partition A has an uncapped weight of 80 and B has 160. The LPAR A will receive 1 processing unit and B receive 2 processing units.
Minimum Memory is the minimum amount of memory which needed by the logical partition to start.
Desired memory is the requested amount of memory for the partition. The partition will receive an amount of memory between minimum and desired. Desired memory is the amount of memory which LPAR needs to have when the lpar is powered on. If the managed system does not have the desired amount of memory but only has lesser memory , those uncommitted memory resources will be assigned to the LPAR when the LPAR is activated.
You cant increase the memory more than maximum value.
Installed memory is the total no. of memory units that are installed on the managed system
Creating a new LPAR :
Server and Partition à Server Management à right click partitionsà Createà logical partition
Give partition ID(Numeric between 1 and 254) and name (max 31 characters)
Give partition type (AIX or linux, i5/OS, VIO)
Select work load management group NO
Give profile name
Specify the Min, Desired and Max memory
Select the dedicated/shared processors
If you select dedicated then give min,desired and max processors
If you select the shared give min,desired and max processing units and click advanced
And click the radio button(capped/uncapped) and give the virtual processors(min,max,desired)
If you select the uncapped give the weight also.
Allocate physical IO resources : Select the IO and click the add as required/add as desired.
IO resources can be configured as required or desired. A required resource is needed for the partition to start when the profile is activated. Desired resources are assigned to the partition if they are available when the profile is activated.
And select the console, location code
To create another profile Right click the partition à createà profileà give profile id.
Change default profile : Right click the partition àchange default profileà choose profile.
Restart options :
DUMP : Initiate a main storage or system memory dump on the logical partition and restart the logical partition when complete.
Immediate : as quickly as possible , without notifying the logical partition.
DUMP Retry : Retry a main storage or system memory dump on the logical partition and restart the logical partition when complete.
Shutdown options :
Delayed : Shutdown the logical partition by starting the delayed power off sequence.
Immediate : as quickly as possible , without notifying the logical partition.
DLPAR:
DLPAR can be performed against the following types :
Physical Adapters
Processors
Memory
VIO Adapters
Right click the partition à Dynamic Logical Partitioningà Physical adapter resourcesà add/move/remove
Licensed Internal Code Updates: To install licensed internal code fixes on your managed systems for a current release click “change licensed internal code for the current release”
To upgrade licensed internal code fixes on your managed systems for a current release click “upgrade licensed internal code for the current release”
HMC Security: Servers and Clients communicate over the secure sockets layer(SSL). Which provides server authentication, data encryption and data integration.
HMC Serial number lshmc -v
To format the DVD-RAM media
The following steps show how to format the DVD-RAM disk:
1. Place a DVD-RAM disk in to the HMC DVD drive.
2. In the HMC Navigation area,under your managed system, click Licensed Internal Code
Maintenance.
3. Then click HMC Code Update.
4. In the right-hand window, click Format Removable Media.
5. Then select the Format DVD radio button.
6. Select Backup/restore.
7. Then click the Format button.
The DVD-RAM disk should be formatted in a few seconds, after which you will receive a
“Format DVD has been successfully completed – ACT0001F” message.
Back up to formatted DVD media
Use the following steps to back up the CCD to the formatted DVD media:
1. In the HMC Navigation area, click Licensed Internal Code Maintenance.
2. Then click the HMC Code Update.
3. In the right-hand window, click Back up Critical Console Data.
4. Select the Back up to DVD on local system radio button and click the Next button.
5. Enter some valid text in the description window and click OK.