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  1. OpenShift Specialist Platform Team
  2. SPLAT-2354

[GA] Configuring Additional etcd Disk for Azure

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    • [Tech Preview] Configuring Additional etcd Disk for Azure
    • Product / Portfolio Work
    • OCPSTRAT-2046Support for Configuring Additional Disks During OpenShift Installation - Phase II
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      Feature Overview (aka. Goal Summary)  

      OpenShift is traditionally a single-disk system, meaning the OpenShift installer is designed to install the OpenShift filesystem on one disk. However, new customer use cases have highlighted the need for the ability to configure additional disks during installation. Here are the specific use cases:

      • Dedicated Disk for etcd:
        • As a user, I would like to install a cluster with a dedicated disk for etcd.
        • Our recommended practices for etcd suggest using a dedicated disk for optimal performance.
        • Managing disk mounting through MCO can be challenging and may introduce additional issues.
        • Cluster-API supports running etcd on a dedicated disk.

      Additional Information

      Benchmark results: https://docs.google.com/document/d/1O_k6_CUyiGAB_30LuJFI6Hl93oEoKQ07q1Y7N2cBJHE/edit?tab=t.0

      Research issue: https://issues.redhat.com/browse/SPLAT-1199

      Marco's PoC: https://github.com/openshift/installer/compare/release-4.14...mtulio:installer:lab-extra-disks

              jcallen@redhat.com Joseph Callen
              rhn-support-rvanderp Richard Vanderpool
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              Jinyun Ma Jinyun Ma
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