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# Convert SRDF/S to SRDF/Metro or SRDF/Metro to SRDF/S

Symmetrix Remote Data Facility (SRDF) facilitates the data replication from one storage array to another through a storage area network or Internet Protocol (IP) network.

## About this task

This procedure explains how to convert the mode of operation for an SRDF configuration. The following scenarios are supported for the mode conversion:

- SRDF/S R1-R2 Device Pair to SRDF/Metro R1-R2 Device Pair while replication is synchronized or suspended.
- SRDF/Metro R1-R2 Device Pair to SRDF/S R1-R2 Device Pair while replication is active/active or active/bias.

Cascaded and concurrent topologies are supported in line with current SRDF/Metro support.

Existing SRDF/Metro configuration restrictions apply when converting from SRDF/S to SRDF/Metro.

Before you begin:

See Roles and associated permissions to determine the user roles that can perform this task.

This operation can be invoked from multiple locations in the Unisphere user interface (Data Protection > SRDF Group, PROTECTION dashboard> SRDF Metro Groups) . Depending on where the operation is invoked, some of the steps below may not apply.

To convert from SRDF/S mode to SRDF/Metro mode:

## Steps

1. Select the storage system.
2. Click Protection to view the Protection dashboard.
   - To convert from SRDF/S mode to SRDF/Metro mode:
     1. Select SRDF from the Protected Storage Groups section of the summary panel.
     2. Select a SRDF/S storage group, click , and select Set Mode.
     3. Select Active from the SRDF Mode drop-down list.
     4. Optional: Select Use Bias.
   - To convert from SRDF/Metro mode to SRDF/S mode:
     1. Select SRDF/Metro from the High Availability section of the summary panel.
     2. Select a SRDF /Metro Storage Group, click , and select Set Mode.
     3. Select Synchronous from the SRDF Mode drop-down list.
     4. Select Keep R1 or Keep R2.
3. Click Advanced Options to set the advanced options. Select the advanced options and click OK.
4. Do one of the following:
   - Click Run Now to perform the operation now.
   - Expand Run Now and click Add to Job List to add this task to the job list, from which you can schedule or run the task at your convenience. For more information, see Schedule jobs and Preview jobs.

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