VPG {vpg_name} journal history is less than {x} of the configured {n}. {sync_explanation}
Description
During a synchronization, the latest changes in the protection site are added to the journal and older data in the journal is moved to the mirror virtual disk managed by the VRA for the virtual machine. As the synchronization continues and more old data is moved out of the journal, the checkpoints associated with the data are also removed from the journal and new checkpoints are not added to the journal.
This alert is triggered in either of the following situations:
■ When the journal history configured for the VPG is at most one hour and the journal contains less than 75% of the configured history.
■ When the journal history configured for the VPG is at least one hour and the journal contains less than 75% of the configured history or one hour of history.
The message specifies that the amount of history is a large percentage less than the configured amount.
This error alert is issued if the alert VPG0004 becomes persistent.
This alert will automatically be resolved when the journal history is fully populated.
A synchronization (but not a bitmap synchronization, see the next cause) has caused the journal to include less time than defined.
Nothing to do. With time the journal will fill up to the defined time.
A bitmap synchronization has caused the journal to include less time than defined.
If the amount of time left in the journal is too small, the ability to recover if a disaster occurs is impaired. If the advanced settings, Replication Pause Time has been defined, the synchronization will pause to enable the situation to be resolved, for example, by creating a clone.
The MTU value is too big to enable transfer over VPN.
Reduce the MTU. Zerto recommends reducing the MTU by increments of 10 until pinging the remote site is successful, using the following ping command: ping URL-f -l MTU_value. Start with an MTU value of 1500. When the MTU value is too big, the ping will return strings similar to the following: Packet needs to be fragmented but DF set.