Sync Burst is used to increase performance during searches. Sync Burst allows the Vault to recognize multiple directory sync requests, which can degrade performance. For example, if someone is searching a large directory looking for a particular file type, if Sync Burst is enabled, the Vault does not do a sync while the directories are searched.
To enable or disable Sync Burst
Open the WAFS Agent Manager.
Right-click the Job in the tree, then click Change Job Options. The Change Job Options dialog box appears.
In the Advanced Settings area, select (enable) or clear (disable) the Sync Burst check box.
Click OK to save the changes.