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The following alert message may be displayed if adequate space is not available in the replication log volume.

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Details of a Replication Log Volume

  • Each protected domain uses a single replication log for all its the VMs belonging to it.

  • The replication log volume consists of multiple sections (illustrated described below):

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Replication Log Section

  • Keeps a record of data being replicated to the object store.

  • I/O coming into the DRVA is written to the Object object store.

  • If there is a network bottleneck the I/O will get written to the replication log.
    (It acts as a temporary placeholder.)

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  • Contains metadata of the VMs including garbage collection (DB).

Free Space Section

  • When Metadata metadata becomes full, if there is available Free Space free space in the replication log volume, the management server will automatically re-assign some of the Free Space free space to Metadatametadata.

Note

The “log space low” message can appear when the Replication Log Section replication log section is full or > 90% >90% for a certain period of time. This message will stop appearing once the space is freed up.

Info

Best Practices

  • The Replication Log replication log section should be sized to 64GB per protected domain (regardless of the number of VMs being protected).

  • The number of vDisks protected should not exceed 500 per DRVA.

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If the replication log has been over provisioned, it the replication log section can be resized to release free space on the replication log volume (RLV).

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