If physical drives need to be relocated within the array (e.g., rebalancing shelves or moving packs to specific slots to match the target configuration) as part of anXFORM (Data-in-Place) upgrade, this task should be completedafter the upgrade is completed.
Risk Management:The primary objective during the upgrade window is to successfully transition the controllers and software to the new generation (e.g., SAS to NVMe, or //M to //X) while maintaining data availability. Introducing unnecessary physical changes—like moving drives between slots—during the active controller swap adds variables and risk to the critical path.
Procedure:The standard workflow involves:
Perform the Controller Upgrade (XFORM).
Verify the new system is stable, healthy, and handling I/O correctly.
Post-Upgrade:Once the system is stable, the Implementation Engineer performs the physical drive relocation (if required) to optimize the layout or consolidate shelves. This ensures that if any issues arise from the drive movement, they are isolated from the controller upgrade process, making troubleshooting significantly easier and safer.
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