Configure Storage Redundancy
Overview
Storage accounts must match or exceed the redundancy level of the compute they support. Zone-redundant compute requires at minimum ZRS storage.
Upgrade Paths
| Current | Target | Method | Downtime |
|---|---|---|---|
| Standard_LRS → Standard_ZRS | ZRS | Live migration or manual | None (live) or planned (manual) |
| Standard_LRS → Standard_GRS | GRS | In-place update | None |
| Standard_LRS → Standard_GZRS | GZRS | In-place update | None |
| Premium_LRS → Premium_ZRS | ZRS | Manual migration only | Planned |
In-Place Upgrade (LRS → GRS/GZRS)
GRS and GZRS upgrades can be done in-place immediately:
bash
# Upgrade to GZRS (zone + region redundant — recommended)
az storage account update \