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48 PS Series Asynchronous Replication Best Practices and Sizing Guide | BP1012
From a best practice perspective, the borrowed space should be temporary in nature. If replications are
requiring borrowed space consistently over time, then the delegated space could be increased and that
borrowed space will be freed up after the next replication cycle. See section 3.5 for more details.
Figure 36 shows the space borrowed returning to 0 MB after adding an additional 302 GB to both pools’
delegated space.
Navigation tip: Group Manager GUI (primary) > Group > Borrowed Space > Remote Delegated Space
(tab)
Space borrowed returns to 0 MB after increasing the delegated space
7.6 Monitoring Replication with SAN Headquarters
Figure 37 shows how SAN Headquarters allows you to monitor replication events over a relatively long period
of time. SAN Headquarters will display the transfer rate and duration as well as the status of each replication
cycle. System administrators should review these statistics to ensure that storage capacity is being used
efficiently, that there is sufficient delegated space on the replication partner and that all replicas are
successfully completing in the required time to meet RPO objectives.