It is possible to reconfigure one node canister of each control enclosure at the same time. During the procedure, both I/O groups (control enclosures) are online with no redundancy, but the total maintenance period is reduced.
To replace host interface adapters in both control enclosures concurrently, use the procedure for replacing the host interface adapter in a single enclosure, but complete each step in both enclosures before you continue to the next step. Replacing host interface adapters in two control enclosures concurrently shows how to sequence the step in each node. Work your way down the table, completing each row before you start the next row.
| Control enclosure 1 | Control enclosure 2 | ||
|---|---|---|---|
| Node canister 1 | Node canister 2 | Node canister 1 | Node canister 2 |
| Step 1 | Step 1 | ||
| Step 2 | Step 2 | ||
| … | … | ||
| Final step | Final step | ||
| Step 1 | Step 1 | ||
| Step 2 | Step 2 | ||
| … | … | ||
| Final step | Final step | ||