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ONTAP 7-Mode Transition

Restrictions during preproduction testing

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Some operations are blocked and some operations are not recommended during preproduction testing. These restrictions are imposed for allowing a rollback to 7-Mode if you do not want to commit the transition.

Operations that are blocked

Operation Description

Automatically deleting (autodelete) aggregate Snapshot copies

Because the 7-Mode aggregate-level Snapshot copies created during the export operation are required in case of a rollback, the Snapshot copies are not deleted automatically when the used space in the aggregate grows.

Important You must monitor the free physical space in the aggregate and ensure that the aggregates do not run out of space during the testing.

Moving volumes to another aggregate

  • You cannot move volumes to the transitioned aggregates.

  • You can move volumes from the transitioned aggregates to aggregates in the cluster.

Copying or moving LUNs across volumes

  • You cannot copy or move LUNs to the transitioned volumes.

  • You can copy or move LUNs from the transitioned volumes to other volumes in the cluster.

Creating an aggregate

This operation is restricted on the target cluster HA pair. You can create aggregates on other nodes in the cluster.

Destroying an aggregate

Because the 7-Mode aggregate-level Snapshot copies created during the export operation are required in case of a rollback, the transitioned aggregates cannot be destroyed.

Setting up a transitioned aggregate as the root aggregate

The transitioned aggregates cannot be selected as root aggregates. Additionally, you cannot modify the HA policy of the transitioned aggregates to CFO.

Performing file copy operations

  • You cannot move or copy files (single file copy-on-demand) to the transitioned volumes.

  • You can move or copy files from the transitioned volumes to other volumes in the cluster.

Mirroring an existing aggregate

The operation is blocked on all the aggregates in the cluster.

Upgrading or reverting the Data ONTAP version on the target cluster nodes

You must commit the project before upgrading or reverting the target cluster nodes.

Adding disks

You cannot run the storage aggregate add-disks command in the admin privilege level. However, you can run this command in the advanced privilege level.

Important You must ensure that only the spare disks from the 7-Mode disk shelves are added for increasing the space in the transitioned aggregates. You must add spare disks by using the -disklist parameter (the -diskcount parameter must not be used).

Designating a transitioned volume as the SVM root volume

You cannot run the volume make-vsroot command on the transitioned volumes.
Operation Corrective action before rollback

Relocating aggregates

The ownership of the transitioned aggregate is changed to its HA partner.

Swap the aggregate ownership before rollback because the 7-Mode Transition Tool maps the aggregates to the 7-Mode controllers based on the target node mapping information saved in the project.

Creating volumes on the transitioned aggregates

You must delete these volumes or move them to different aggregates.

Renaming aggregates or volumes

Rename the aggregates or volumes to their original names.

Changing the RAID type

The RAID type must match the 7-Mode RAID type if you decide to roll back to 7-Mode.

Related information

ONTAP 9 commands