When You Power Off the Primary and Secondary Storage Systems at the
Same Time
If you want to power off the primary and secondary storage systems at the same time, the primary storage system must be powered off before the secondary storage system is powered off. If you want to power on the primary and secondary storage systems again, the secondary storage system must be powered on before the primary storage system is powered on.
If more than one primary and secondary storage systems are used with extended consistency groups, you must first power off all the primary storage systems, and then the secondary storage systems. When you power on the primary and secondary storage systems again, you must first power on all the secondary storage systems, and then the primary storage systems.
The following is the procedure for powering off the primary and secondary storage systems at the same time:
1.Split data volume pairs that will be affected by powering off of the primary and secondary storage systems.
For example, if two primary storage systems and one secondary storage systems are connected to each other and you want to power off one of the primary storage system and the secondary storage system, you must split data volume pairs that are defined between the remaining one primary storage system and the primary storage system, because these data volume pairs will be affected by powering off of the storage systems.
2.After the splitting of the pairs finishes, confirm that the status of all the pairs is changed to Suspend at the primary storage system.
3.Power off the primary storage system as described previously. Do not power on the primary storage system yet.
4.Power off the secondary storage system as described previously.
5.Power on the secondary storage system.
6.If the secondary storage system is ready to resume remote copy operations, power on the primary storage system.
7.If the primary storage system is ready to resume remote copy operations, resume the data volume pairs that have been split at the primary storage system. Confirm that the status of the data volume pairs is changed to Pending or Duplex.
Note: After you turned the power on or off both the primary and secondary storage system at the same time, if a status of a data volume pair of primary storage subsystem is Suspend and a status of a data volume pair of secondary storage subsystem is Duplex, you must suspend the data volume pair of secondary storage system by using Storage Navigator. After confirming that the statuses of the data volume pair of primary storage system and secondary storage system are Suspend, restore the data volume pair that has been split at the primary storage system.
Chapter 5 Configuring Storage Systems and Logical Paths |
