GDPS halts Metro Mirror replication 2. **T+0:05** — GDPS reverses the mirror direction (Indianapolis volumes become primary) 3. **T+0:12** — GDPS initiates z/OS IPL at Indianapolis using the mirrored system volumes 4. **T+2:30** — z/OS is operational at Indianapolis 5. **T+3:00** — GDPS starts the D