On a compressed NTFS partition, the Microsoft Exchange Server information
store, may get corrupted when its size reaches about 4 gigabytes (GB). This
can cause failure of the information store.
A compressed NTFS partition can adversely affect the Microsoft Exchange
Server by causing one or more of the following problems:
- High CPU utilization.
- Enumeration of large NTFS directory may take a long time.
- Degradation of NTAS server with NTFS partition that includes many Files.
For additional information, please see the following articles in the
Microsoft Knowledge Base:
Enumeration of Large NTFS Directory Takes a Long Time
NTFS Performance Problem with Many Files