SyncIQ Failover and Failback

SyncIq automated data failover & failback provides the high availability to OneFS which means in the event that a primary culster becomes unavailable, SyncIQ provides the ability to failover to a mirrored, DR cluster with minimal interruption.

Please note that: SyncIQ follows asynchronous replication not synchronous.

Below are the steps that needs to be executed for Isilon SyncIQ failover and failback; this can also be used for DR testing.

To initiate failover:

1) Set the target cluster as read-write

# isi sync recovery allow-write <policy_name>

Failback can be accomplished if the policy meets the following criteria:

1) source directory is not a smartlock directory

2) The policy has been failed over

3) The policy is a Sync Policy and not a copy policy

Steps in failback:

1) Resync-prep on the policy

# isi sync recovery resync-prep <policy_name>

2) Run a typical job on the mirror policy, a final failback differential sync is preformed:

# isi sync job start <policy_name_mirror>

3) Change the mirror local target to allow writes

# isi sync recovery allow-write <policy_name_mirror>

4) Run Resync-prep again on the mirror policy

# isi sync recovery resync-prep <policy_name_mirror>

5) Delete the mirror policy

# isi sync policies delete <policy_name_mirror>

Also read Isilon SyncIQ

Happy Learning!