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Checklist 12: Upgrade load source disk unit with local mirroring

This checklist shows the sequence of tasks to upgrade your load source disk unit (unit 1) with a disk unit that has at least a 17-GB capacity while keeping mirrored protection active. The units that are replaced in this procedure are discarded.

Print a copy of this checklist. Check off the configuration tasks as you perform them. This checklist provides an important record of your actions. It may help you diagnose any problems that occur.

Before you begin

Evaluate your disk configuration and record your answers. The information entered in the Before you begin table is needed to answer the questions in the Load source planning section.

Table 1. Disk configuration questions
Disk configuration questions Disk configuration answers
Where is the load source disk unit and the mirrored load source disk unit located?
Note: It is recommended that you print the graphical view of the load source disk unit and the mirrored load source disk unit or optionally mark them.
 
How many replacement disk units do you have?
Note: You need two disk units of the same capacity.
  

Load source planning steps

Answer the questions below. If you answer Yes to all of these questions, you can perform the load source disk unit upgrade. However, if you answer No to any of the questions, call your next level of support to perform this upgrade.

Table 2. Load source planning steps
Load source planning steps Planning requirements answers
Does your load source disk unit (unit 1) have mirrored protection? Yes / No
Are there enough open slots to install your replacement units?
Note: There must be at least two open slots for the replacement disk units.
 Yes / No
Do you know how to physically install and remove disk units from your system?

Install and remove replacement units on an IBM® iSeries™ server.

Install and remove replacement units on an IBM eServer™ i5.

 Yes / No
Do you have iSeries Navigator or know how to find the physical location of disk units on your system? You will need to know this information in several tasks below. Yes / No
Start of changeThe load source upgrade will require multiple hours to complete. Make sure that you schedule the upgrade during a time frame when the system can be unavailable to perform normal system activities. Do you have time to perform the load source upgrade?End of change Yes / No

Load source disk unit upgrade

Note: If problems occur that are not described in this procedure contact your next level of support.
Task What to do
1.___ Back up your server using the GO SAVE command.
2.___ Use iSeries Navigator to find the physical location of the load source disk unit (unit 1) and the mirrored load source disk unit.
  1. Open the iSeries Navigator Service Tools Window.
  2. Right-click All Disk Units and select Graphical View.
Note: It is recommended that you mark these disk units with tape to remember their location.
3.___ Turn off your system or logical partition by entering the following command.
PWRDWNSYS *IMMED RESTART(*NO)
The Power Down System (PWRDWNSYS) command prepares the system to end. Use the immediate (*IMMED) value to end all active jobs immediately and use the RESTART (*NO) value to power off the system so that you can install disk units in the next task.
4.___

Install one of the replacement disk units.

  1. Install replacement unit on your system.
Note:
  1. Ensure that the disk unit has at least a 17-GB capacity.
  2. It is recommended that you mark these disk units with tape to remember their location. Ensure that you mark them differently than how they are marked in task 2.
5.___ Work with Dedicated Service Tools (DST).
  1. Power on your system or logical partition to Dedicated Service Tools (DST).
    Note: Verify that you are in manual mode before you power on your system.
6.___

Copy the load source disk unit (unit 1) to the replacement disk unit.

  1. On the Use Dedicated Service Tools (DST) menu, select Work with disk units.
  2. On the Work with Disk Units display, select Work with disk unit recovery.
  3. On the Work with Disk Unit Recovery display, select Copy disk unit data.
  4. Type 1 next to load source disk unit (unit 1) and press Enter.
  5. Type 1 next to one of the disk units that you installed in task 3.
  6. Determine the location of the replacement load source unit
    1. Open the iSeries Navigator Service Tools Window.
    2. Right-click All Disk Units and choose Graphical View.
    3. Find the disk unit with the serial number listed above, and note the location of that unit.
  7. Write down the serial number of the replacement unit that is going replace the load source.

    |_________|

    Note: This information is available in iSeries Navigator and is needed for task 9.
  8. On the Confirm Copy Disk Unit Data display, press Enter.
  9. The status display shows how the operation is proceeding. When the function is complete, return to the Use Dedicated Service Tools (DST) menu.
7.___ Turn off the system or logical partition.
Note: This task is critical. Follow the directions thoroughly.
  1. On the Use Dedicated Service Tools (DST) menu, select Start a service tool.
  2. On the Start a Service Tool display, select Operator panel functions.
  3. Use function F10 to power off the system.
  4. Press Enter.
Note: There is no command line because you are using Dedicated Service Tools.
8.___ Physically remove the old load source disk unit.
  1. Physically remove the old load source disk unit.
    Note: This is the original load source disk unit that was marked in task 2.
9.___ Move the replacement disk unit.
  1. Move the replacement disk unit that now contains the load source information into the slot where the old load source disk unit (unit 1) originally resided.
10.__

Replace the mirrored load source disk unit.

  1. Physically remove the mirrored load source disk unit.
  2. Install the second replacement unit into the slot that the mirrored load source originally resided.
11.__ Work with Dedicated Service Tools (DST).
  1. Power on your system or logical partition to Dedicated Service Tools (DST).
12.__ Replace the configured disk unit.
  1. On the Use Dedicated Service Tools (DST) menu, select Work with disk units.
  2. On the Work with Disk Units display, select Work with disk unit recovery.
  3. On the Work with Disk Unit Recovery display, select Replace configured unit.
  4. Type 1 next to the suspended unit 1 disk unit and press Enter.
  5. Type a 1 next to the newly installed disk unit and press Enter.
  6. On the Confirm Replace Configured Unit display, press Enter
  7. The status display shows how the operation is proceeding. When the function is complete, return to the Use Dedicated Service Tools (DST) menu.
13.__ Examine the configuration.
  1. On the Use Dedicated Service Tools (DST) menu, select Work with disk units.
  2. On the Work with Disk Units display, select Work with disk configuration .
  3. On the Work with Disk Configuration display, select Display disk configuration.
  4. On the Display Disk Configuration display, select Display disk configuration status.
  5. Examine the configuration information to ensure that the load source disk unit (unit 1) is one of the replacement disk units that you installed in task 4.
  6. Verify that the load source serial number matches the number that you wrote in take 6, step 7.
14.__ IPL your system to i5/OS™.

If this procedure has been completed correctly, your load source will be upgraded and mirrored protection will be active.

If this procedure has not been completed correctly, contact your next level of support.

Parent topic: Choose the correct procedure for configuring disks
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