AS400 to IBM Power 11 Partners
(888) 682-5335

IBM i Power 11 upgrades and migration

Plan capacity and IBM i release changes on Power 11

Check the IBM i release and configuration limits of your current Power 11 model. Midland can help compare an OS upgrade, additional resources and a move to a different configuration.

Find your current Power 11 model

The listed IBM i Power 11 models run 7.4, 7.5 and 7.6 at their required code levels. E1150 is outside the IBM i model list. L-model IBM i use is configuration-limited and must stay within its documented allocation.

Select your exact model below for its planning notes and catalog details. The release column is a planning boundary; processor features and I/O can require higher minimum levels.

Power 11 IBM i models and upgrade starting points
Current modelIBM i release boundaryFirst planning question
E1180 9080-HEU7.4 through 7.6 with model-specific technology refreshes and fixesSize the partitions before choosing the replacement
L1122 9856-22H7.4 through 7.6 with model-specific technology refreshes and fixesKeep virtual I/O and processor configuration together
L1124 9856-42H7.4 through 7.6 with model-specific technology refreshes and fixesCheck the IBM i allocation before counting physical cores
S1112 9242-21B7.4 through 7.6 with model-specific technology refreshes and fixesCompare a capacity change with the release you need
S1112 9242-21T7.4 through 7.6 with model-specific technology refreshes and fixesCompare a capacity change with the release you need
S1122 9824-22A7.4 through 7.6 with model-specific technology refreshes and fixesKeep virtual I/O and processor configuration together
S1124 9824-42A7.4 through 7.6 with model-specific technology refreshes and fixesCompare a capacity change with the release you need

E1180 9080-HEU: size the partitions before choosing the replacement

Inventory every IBM i partition and any AIX or Linux partitions that share the server. Capture peak demand and each partition’s software entitlement. Check external storage and management-console compatibility separately from the processor comparison so consolidation retains the required isolation and recovery options.

For a replacement comparison, review E1080 9080-HEX and E1180 9080-HEU. Size these candidates against the actual IBM i workload and release requirement. The comparison does not establish a one-for-one capacity match or an eligible model conversion.

E1180 9080-HEU specifications and configurations · Choose the installed-release starting point · Collect the migration inventory

L1122 9856-22H: keep virtual i/o and processor configuration together

Record whether IBM i owns its adapters or receives storage and network access through Virtual I/O Server. Match the required arrangement to the exact processor configuration. Preserve virtual disk mappings and network settings in the migration plan before sizing the replacement.

L-model IBM i use is limited by the documented processor allocation. Keep that condition in the quote; this is not a promise that all activated cores can run IBM i.

For a replacement comparison, review S1022 9105-22A and S1122 9824-22A. Size these candidates against the actual IBM i workload and release requirement. The comparison does not establish a one-for-one capacity match or an eligible model conversion.

L1122 9856-22H specifications and configurations · Choose the installed-release starting point · Collect the migration inventory

L1124 9856-42H: check the ibm i allocation before counting physical cores

Keep the model-specific IBM i allocation limits beside the processor configuration. Compare the cores assigned to IBM i with the physical server total. Include the other hosted workloads in the capacity review so a consolidation proposal does not count the same resources twice.

L-model IBM i use is limited by the documented processor allocation. Keep that condition in the quote; this is not a promise that all activated cores can run IBM i.

For a replacement comparison, review S1022 9105-22A and S1122 9824-22A. Size these candidates against the actual IBM i workload and release requirement. The comparison does not establish a one-for-one capacity match or an eligible model conversion.

L1124 9856-42H specifications and configurations · Choose the installed-release starting point · Collect the migration inventory

S1112 9242-21B: compare a capacity change with the release you need

Use the installed processor feature and IBM i allocation to size the workload. Review memory pressure and disk response before buying more processor capacity. If the desired release is outside this model’s limit, include replacement hardware in the comparison rather than treating added memory as an OS upgrade.

For a replacement comparison, review S1012 9028-21B and S1112 9242-21B. Size these candidates against the actual IBM i workload and release requirement. The comparison does not establish a one-for-one capacity match or an eligible model conversion.

S1112 9242-21B specifications and configurations · Choose the installed-release starting point · Collect the migration inventory

S1112 9242-21T: compare a capacity change with the release you need

Use the installed processor feature and IBM i allocation to size the workload. Review memory pressure and disk response before buying more processor capacity. If the desired release is outside this model’s limit, include replacement hardware in the comparison rather than treating added memory as an OS upgrade.

For a replacement comparison, review S1012 9028-21B and S1112 9242-21B. Size these candidates against the actual IBM i workload and release requirement. The comparison does not establish a one-for-one capacity match or an eligible model conversion.

S1112 9242-21T specifications and configurations · Choose the installed-release starting point · Collect the migration inventory

S1122 9824-22A: keep virtual i/o and processor configuration together

Record whether IBM i owns its adapters or receives storage and network access through Virtual I/O Server. Match the required arrangement to the exact processor configuration. Preserve virtual disk mappings and network settings in the migration plan before sizing the replacement.

For a replacement comparison, review S1022 9105-22A and S1122 9824-22A. Size these candidates against the actual IBM i workload and release requirement. The comparison does not establish a one-for-one capacity match or an eligible model conversion.

S1122 9824-22A specifications and configurations · Choose the installed-release starting point · Collect the migration inventory

S1124 9824-42A: compare a capacity change with the release you need

Use the installed processor feature and IBM i allocation to size the workload. Review memory pressure and disk response before buying more processor capacity. If the desired release is outside this model’s limit, include replacement hardware in the comparison rather than treating added memory as an OS upgrade.

For a replacement comparison, review S1024 9105-42A and S1124 9824-42A. Size these candidates against the actual IBM i workload and release requirement. The comparison does not establish a one-for-one capacity match or an eligible model conversion.

S1124 9824-42A specifications and configurations · Choose the installed-release starting point · Collect the migration inventory

Your installed IBM i release on Power 11

Power 11 already supports the current release family. Compare the actual IBM i partition allocation with the workload before treating the physical core count as usable IBM i capacity.

Power 11: installed IBM i release and next step
Installed releaseUseful next step
IBM i 7.4Review the supported software steps and the hardware needed for each step. A release named here is a planning branch, not proof it is installed or supported by every configuration.
IBM i 7.5Review the supported software steps and the hardware needed for each step. A release named here is a planning branch, not proof it is installed or supported by every configuration.
IBM i 7.6Review the supported software steps and the hardware needed for each step. A release named here is a planning branch, not proof it is installed or supported by every configuration.

If your recorded release falls outside the boundaries above, confirm the exact machine and partition inventory before selecting a destination. Find the model and release information.

Power 11 capacity upgrade or replacement

Configuration, partition allocation and OS-level assessment.

Adding resources to an existing server and moving to another server are different jobs. A formal IBM model conversion exists only when IBM offers that exact conversion; an ordinary replacement requires a migration plan.

Migration from Power 11: sequence the changes

Moving between Power 11 systems still needs new-machine licensing and a tested transfer plan when the serial number changes. Consolidation onto a larger server also needs each partition sized and licensed individually.

  1. Record the current model, release and partition layout.
  2. Confirm the release sequence and hardware that can run each step.
  3. Choose the data-transfer method around a tested restore and the available outage.
  4. Rehearse the move before scheduling the final switch.

Several processor generations may be skipped when the verified source and destination allow it. The number on the server family does not establish a supported direct restore or a live-partition move.

Ask Midland about your Power 11 change

Send the exact machine type and model with the installed IBM i release. Include the processor feature and a summary of the applications that must continue running. Midland can then scope the equipment and migration work together.

Discuss your current Power 11 system · Return to IBM i upgrades · Explore IBM i migration

Sources and compatibility checks

Technical guidance checked October 21, 2026. A hardware release mapping describes which releases can run; support coverage and software entitlement are separate checks.