Adding new disks to existing Fusion Data Foundation nodes

After you add additional disks to Fusion Data Foundation storage nodes, it auto detects the new disks and auto expands the capacity to Fusion Data Foundation storage cluster. Each storage node must have the same number of disks, so make sure to add an equal number of disks to each node in the cluster.

Before you begin

Ensure that the following conditions are met:
  • No node is in maintenance mode.
  • Nodes do not get rebooted during disk upsize.
  • Do not initiate an upgrade of OpenShift®, IBM Storage Fusion HCI System, or node firmware until the new storage addition is complete.
  • Number of disks is the same for all servers in the storage cluster.

    If you want disk upsize, then add same number of disks to all storage nodes available in the cluster. For example, a cluster has a base minimum of six storage nodes, then at least 6*2=12 disks with two disks each must be added. For nodes, if the cluster has six storage nodes with two disks each, you can add one more node with two disks. Now, your storage cluster has seven storage nodes with two disks each.

  • Storage nodes must have an even number of disks.
  • During installation or upgrade, the pod may get stuck in container creating state and the crash loop might fail with attach volume. For such error scenarios, do the following workaround steps:
    1. Unschedule the node from which you were trying to attach volume.
    2. Delete the pod that got stuck in container creating state.
    3. Run upsize again.
  • For hardware configuration of compute-storage or compute-only nodes, see Hardware overview of a single rack.

About this task

If you face any issues during disk upsize, see Global Data Platform service issues.

Procedure

  1. In the IBM Storage Fusion menu, go to Data Foundation.
    Wait for the new capacity to be shown in the Data Foundation page.
  2. To verify, go to the node details page and check the Disks tab. For more information about the procedure, see Node details.