Upgrading the load source disk unit with local mirroring using newly installed disk units
This checklist shows the sequence of tasks to upgrade your load source disk unit (unit 1) and the mirrored load source with disk units that have equal capacity, are at least 70-GB, and are mirror protected. The disk 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.
Disk configuration questions | Disk configuration answers |
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Where is the load source disk unit and the mirrored load source disk unit
located? Determine the disk unit locations using Dedicated Service Tools (DST) or System Service Tools (SST).
Tip: Mark these disk units with tape to remember their locations.
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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.
Load source planning steps | Planning requirements answers |
---|---|
Does your load source disk unit (unit 1) have mirrored protection? | Yes / No |
Does your system or partition currently have at least one available disk slot to install a load source replacement disk unit or a virtual storage LUN? | Yes / No |
Do you know how to physically install and remove disk units from your system? | Yes / No |
Where you able to locate the load source and load source mirrored units in the Disk Configuration questions? | Yes / No |
The load source upgrade will require multiple hours to complete. Make sure that you schedule the upgrade during a time frame when the system or partition can be unavailable to perform normal system activities. Do you have time to perform the load source upgrade? | Yes / No |
Load source disk unit upgrade
Task | What to do |
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1. | Back up your system using the GO SAVE command from the IBM i command line. |
2. | Set the IPL mode to MANUAL. Note: Manual IPL
is required for Dedicated Service Tools (DST).
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3. | Restart your system or partition to Dedicated
Service Tools (DST) by entering the following command from the IBM i command line.
Note: Verify
that you are in manual mode before you power down your system.
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4. | Begin Dedicated Service Tools.
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5. | Suspend Mirroring on the mirrored load source
disk unit (unit 1).
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6. |
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7. | Power off your system or partition.
Note: There is no command line because you are using Dedicated Service Tools.
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8. | Install the first replacement disk unit.
Note: Ensure that the disk unit has at least a 70-GB capacity.
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9. | Power on your partition and begin Dedicated Service Tools (DST).
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10. | Copy the load source disk unit (unit 1) to the
replacement disk unit.
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11. |
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12. | Power off the system or partition.
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13. | Physically remove the original load source disk unit.
Note: This is the original load source disk unit that you copied in task 10, and
identified in task 11.
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14. | Install the second replacement disk unit that will be the
mirror mate to the load source disk unit.
Note: Ensure that the disk unit has at least a 70-GB capacity.
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15. | Use the HMC to change the I/O tag.
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16. | Power on your system or partition and begin Dedicated Service Tools (DST).
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17. | Replace the configured disk unit.
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18. | Examine the configuration.
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19. | IPL your system to IBM i. |
If this procedure has been completed correctly, your load source will be upgraded. Mirrored protection will be active when the partition IPLs past DST.
If this procedure has not been completed correctly, contact your next level of support.