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titleDetaching Geographic Mirroring Sessions

To detach Geographic Mirroring Sessions, use the CHGASPSSN command. For example: CHGASPSSN SSN(GEOMIRSSN) OPTION(*DETACH)

Note

With Geographic Mirroring, when upgrading to a new IBM i release, these instructions will cause a full re-synchronization of data to occur as part of a reattach of the Geographic Mirrored IASP in the instructions below.

Data transfer times for geographic mirroring are dependent upon several factors including the amount of used storage on the IASP and connection between systems. Transfer times may be reduced by enabling Geographic Mirroring compression and increasing the geographic mirroring synchronization priority.

  1. If the status of the CRG is anything other than Inactive, end the cluster resource group with the ENDCRG command. In this scenario, the command is: ENDCRG CRG(MYCRG)

  2. End clustering on the Backup Node. This is NODEB in the example by using the ENDCLUNOD command. In this scenario, the command is: ENDCLUNOD NODE(NODEB)

  3. Upgrade NODEB to the new software level. This new level could be for program temporary fixes (PTFs) or to a new release. If upgrading to a new release see Upgrading or replacing IBM i and related software for details.

  4. Vary on the IASP on NODEB. Testing the applications ensures that they operate as expected within the new update. After application tests are completed, you can finish the upgrade by completing the rest of these steps.

Note

If using Geographic Mirroring, when upgrading to a new IBM i release, varying on the IASP on a newer OS release on the target, will require a full re-synchronization of data to occur as part of a reattach of the Geographic Mirrored IASP in the instructions below.

Data transfer times for geographic mirroring are dependent upon several factors including the amount of used storage on the IASP and connection between systems. Transfer times may be reduced by enabling Geographic Mirroring compression and increasing the geographic mirroring synchronization priority.

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titleVarying on the IASP on NODEB

  1. Work with the configuration status of the independent ASP (IASP) by using the WRKCFGSTS command. For example: WRKCFGSTS CFGTYPE(*DEV) CFGD(MYIASP).

  2. Use Option 1 to vary on the IASP.

  3. In another session, use the Display ASP Status Command (DSPASPSTS) to monitor the vary on progress.

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