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Status Functionality already exists
Workspace IBM Storage Virtualize / FlashSystem
Created by Guest
Created on Jul 8, 2025

RELATED IDEAS

Provide the ability to change the system layer from Storage to Replication without requiring a resynch for systems with established partnerships to allow systems to participate in FlashSystem grid.

Currently, in order for a FlashSystem to participate in FlashSystem grid they have to be in the replication layer. Prior to 8.7.0 arrays were shipped in the storage layer by default. My client has 21 FlashSystem arrays and 18 of them are currently in the storage layer and unable to participate in grid. They all have remote partnerships established and hundreds of TB’s of data are currently replicated from production to DR. The client would like the ability to change the systems that are in the storage layer to the replication layer so those systems can participate in FlashSystem grid without having to perform a complete re-sync of data and disrupt their DR posture. The FS9500’s that were shipped with 8.6.0 will be in the environment for at least the next 3 years.

Idea priority High
  • Admin
    Philip Clark
    Jul 14, 2025

    This is possible using the latest version.

    You can only remove the partnerships and recreate the partnerships (without a complete re-sync) if it is a recent version of PBR that uses partitions (introduced with 3-site).

    If you upgrade to 8.7.3 or 9.1.0, you can convert PBR to use partitions. It will allow you to remove the partnerships, unzone, and change layers, and recreate the partnerships. It will then do an incremental resync.

    Existing configurations that use PBR without partitions can be migrated into a storage partition by using the CLI:

    https://www.ibm.com/docs/en/flashsystem-9x00/8.7.x_cd?topic=recovery-migrating-replication-disaster-use-partitions

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