[Research] 4-8-4 MCIP A400 -> A800 replacing MCIP Switches

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A place to record some research links doing a 4-8-4 MCIP upgrade refresh, from 4 x A400 nodes, to 4 x A800 nodes.

System Refresh Documentation

We start with:

1) Start here: Choose between controller upgrade, system refresh, or expansion

We're doing a system refresh (which has similarities to expansion). So:

2) Choosing a system refresh method

Our method: Expand the MetroCluster configuration and then remove the old nodes.

3) Refresh a four-node or an eight-node MetroCluster IP configuration (ONTAP 9.8 and later)

The above will be the main procedure we'll be following.

Replacing the MCIP Switches

Note: I don't think the below is a great document.

Replace an IP switch or change the use of existing MetroCluster IP switches

We will need an RCF suitable for having 4-nodes of A400 and 4-nodes of A800 existing in the MetroCluster at the same time (RCF for an 8-node A800 should be fine.)

We will need a port mapping plan from old layout (A400 to old switch) to new layout (A400 and with A800).

We will need to validate all relevant softwares.

Suggested Technical Planning Document Headings

  • Project Overview
    • Background
    • Key Dates
    • Current Infrastructure
    • New Hardware
      • Sales Orders
  • Software
    • Software versions
    • RCFs
      • Existing BES-53248 RCF
      • New Cisco NX9336 RCF
  • Hardware
    • Cabinet Layouts
    • Cabling
      • Existing BES-53248 Configuration
      • New Cisco NX9336 Configuration
  • High-Level Steps
    • Preparation
    • Replace BES-53248 switches with Cisco NX9336
    • Add A800 nodes to MCIP (make it 8 nodes)
    • Migration (vol moves)
    • Remove A400 nodes from MCIP (make it 4 nodes)
  • Low-Level Steps
    • TBC
  • APPENDIX
    • References
    • Q&A

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