This section provides an example of how to protect SmartLink files and cloud data. Ensure that you have already configured SyncIQ on the PowerScale clusters, including:
- Fail over to the secondary PowerScale cluster
- Fail back to the primary PowerScale cluster
The following steps are required to fail over to the secondary PowerScale cluster:
- Log in to the secondary OneFS WebUI and go to Data Protection > SyncIQ. Click Local Targets on the policy that you want to fail over and select More > Allow Writes, as shown in Figure 30. This operation grants read/write access to the data on the primary PowerScale cluster being replicated to the secondary PowerScale cluster.
Figure 30. Allow writes on secondary cluster
Note: If the primary PowerScale cluster is still online, stop all writes to the replication policy’s directory.
- Check and change cloud access. Log in to the PowerScale clusters using SSH. To identify the CloudPools GUID, run the commands isi cloud access list and isi cloud access view <GUID>. Figure 31 shows the cloud access status on the secondary PowerScale cluster.
Figure 31. Identify CloudPools GUID to be transferred
- On the primary PowerScale cluster, remove the cloud write permission using the command isi cloud access remove <GUID> as shown in Figure 32. This operation disables the file pool policy, CloudPool, and cloud storage account on the primary PowerScale cluster.
Figure 32. Remove Cloud write access on the primary PowerScale cluster
- On the secondary PowerScale cluster, add the cloud write permission using the command isi cloud access add <GUID>, as shown in Figure 33. This operation enables the file pool policy, CloudPool, and cloud storage account on the secondary PowerScale cluster.
Figure 33. Add cloud write access on the secondary PowerScale cluster
Note: Do not allow write access to the CloudPools from more than one PowerScale cluster.
The SyncIQ failover is complete.
The following steps are required to fail back to the primary PowerScale cluster:
- Log in to the primary OneFS WebUI and go to Data Protection > SyncIQ. Click Policies on the policy that you want to failback and select More > Resync-prep, as shown in Figure 34. This operation creates a SyncIQ replication mirror policy on the secondary PowerScale cluster.
Figure 34. Resync prep SyncIQ policy on primary PowerScale cluster
- Log in to the secondary OneFS WebUI and go to Data Protection > SyncIQ. Click Policies on the replication mirror policy that you want to failover and select More > Start Job, as shown in Figure 35. This operation synchronizes any changes that have been written to the secondary PowerScale cluster back to the primary PowerScale cluster.
Figure 35. Sync data from secondary PowerScale cluster to primary PowerScale cluster
- Log in to the primary OneFS WebUI and go to Data Protection > SyncIQ. Click Local Targets on the policy that you want to failover and select More > Allow Writes, as shown in Figure 36. This operation grants read/write access to the replication directory back to the primary PowerScale cluster and changes the secondary PowerScale cluster’s access to this directory as read-only.
Figure 36. Allow writes on primary PowerScale cluster to SyncIQ replication directory
Note: If the secondary PowerScale cluster is still online, stop all writes to the replication policy’s directory. Perform a final replication from the secondary PowerScale cluster to the primary PowerScale cluster to ensure both sites are synchronized.
- Check and change cloud access. Log in to the PowerScale clusters using SSH. To identify the CloudPools GUID, run the commands isi cloud access list and isi cloud access view <GUID>. Figure 37 shows the cloud access status on the secondary PowerScale cluster.
Figure 37. Identify GUID for CloudPools account and file pool policy
- On the secondary PowerScale cluster, remove the cloud write permission by running the command isi cloud access remove <GUID>, as shown in Figure 38. This operation disables the file pool policy, CloudPool, and a cloud storage account on the secondary PowerScale cluster.
Figure 38. Remove cloud write access on the secondary PowerScale cluster
- On the primary PowerScale cluster, add the cloud write permission using the command isi cloud access add <GUID>, as shown in Figure 39. This operation enables the file pool policy, CloudPool, and cloud storage account on the primary PowerScale cluster.
Figure 39. Give the primary PowerScale cluster cloud write access
Note: Do not allow write access to the CloudPools from more than one PowerScale cluster.
- Log in to the secondary OneFS WebUI and go to Data Protection > SyncIQ. Click Policies on the policy that you want to failback and select More > Resync-prep. This operation disables the SyncIQ replication mirror policy on the secondary PowerScale cluster and places the secondary PowerScale cluster back into read-only mode. In addition, this operation enables the SyncIQ replication policy on the primary PowerScale cluster.