This article applies to all JSDR software versions.
Alarm
Prolonged bitmap mode Duration alert highlights that respective domain(s) cannot keep up with replication.
i.e. A percentage of operating data cannot efficiently reach the DRVA, thus causing the newly written data to be captured by the IO Filter as “bitmaps”, to replicate at a later point in time.
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Cause-
When a large VM is added to the domain and its initial sync takes substantial time.
Inefficient data transfer between the DRVA and object store.
---> A network disruption between the DRVA and the object store.
---> The replication log is full and cannot be written to.
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