Consider the following scenario. You install Microsoft Exchange Server 2007 Service Pack 3 (SP3) in an Exchange Server 2007 Cluster Continuous Replication (CCR) environment. You run a backup operation on the passive node. In this scenario, the log files are not truncated even if the backup operation is completed. Therefore, the disk space is not released. Additionally, the following event is logged in the Application log on the active node:
Event Type: Error Event Source: ESE Event ID: 214 Description: MSExchangeIS (xxxx) <storage group>: The backup has stopped with error -521.
To resolve this problem, install the following update rollup:
2279665 Description of Update Rollup 1 for Exchange Server 2007 Service Pack 3
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
For more information about Exchange Server 2007 SP3, visit the following Microsoft website: