Powering off and on the local storage system

Prerequisites

You do not need to disconnect the external system when powering off only the local system. However, if you do disconnect, when you power on the local system again, access is disabled to the external system until you reconnect.

Procedure

To power off and on the local system

  1. Stop read and write I/O to the local storage system.

  1. Perform all necessary operations for powering off the local system.

Split pairs that use external volumes. For information on pairsplit operations, see the user guide for the relevant software.

  1. Confirm that the status of each external volume is Normal or Disconnect.

  1. Perform all necessary operations to power off the local system.

  1. Turn off the power supply of the local storage system.

Data in local cache memory is written to the external volume when the local system is powered off (all data is destaged).

  1. When you are ready, make sure that the external system is on and power on the local system.

Resync all pairs. For information on pairsync operations, see the user guide for the relevant software.

  1. Start read or write I/O to the local storage system



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