To obtain the file size of Exchange Database files and Log files (*.Edb, *.Stm, *.Log), CA SRM accesses the Administrative Share (C$, or D$) on the Exchange Server. This means the data collection user must belong to the local administrators group. If the user does not, the size of the mailbox stores and the public stores displays as a zero.
If the Exchange Server is the Domain Controller, then you need to add the data collection user as a domain administrator. This enables the data collection user to acquire access to the administrative shares on the Exchange Server. This administrative share access then prevents the user from accessing the mailbox data in the Exchange Server. Subsequently, the user cannot collect both sets of data at the same time.
CA SRM queries the Application Event log in the Exchange Server to get the free space data on public stores and mailbox stores. CA SRM then divides this number by the size of the database (database size comes from the Exchange Server's Administrative Share file access) to obtain the percentage of free space. The data collection user who belongs to the Exchange Domain Servers group should already have the permission to access the Application Event log.
If the total size is missing (zero), even though the free space from the Application Event log is available, the “% Free” displays as N/A (cannot divide by zero).
When the name of a public store or a mailbox store changes, it takes a while for the information to update in the Application Event log. After a name change and prior to log update, the free space for the public store or mailbox store is unavailable.
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