Shulou(Shulou.com)06/02 Report--

1. In ADSI editing, you connect to the configuration container of the domain controller.

two。 Navigate to the following object: Configuration/Services/Microsoft Exchange//Administrative Groups//Servers//Information Store.

3. Right-click Information Store, and then click Properties.

4. On the attribute Editor tab, click msExchESEParamCacheSizeMax, and then click Edit.

5. In the Integer attribute Editor, type the maximum size of the database cache (specified as the number of 32 KB pages), and then click OK (EXchange2007 is specified as the number of 8KB pages and 2000 as the number of 4KB pages).

For example:

To set the database cache size to 6 GB, dividing 6 GB (6x1024x1024/8=6291456 KB) by 32 results in pages with a value of 196608 32 KB. In the Integer attribute Editor dialog box, type the value without using commas or periods.

6. Click OK to close the Information Storage Properties.

7. Turn off ADSI editing and restart the Microsoft Exchange information storage service

Explanation of reason:

Larger database caching greatly improves performance because of reduced disk input / output (Imax O) and much faster reading of information from memory than from disk.

Due to the 64-bit architecture in Exchange 2007, the maximum size of the database cache is no longer limited by virtual address space. Instead, it is determined by the amount of memory available and by the database IZP O. For example, on a server with a physical RAM of 16 GB, ESE might increase the database cache to 8 GB (if that amount is sufficient to meet its memory needs) and set aside the remaining memory for the system cache and other applications running on the server.

Since the maximum size of the database cache is not set by default, ESE can increase the size of the database cache to use almost all available RAM on the server (if there is enough database RAM O pressure to justify this increase). If other applications or Windows Server systems cache requests or require memory, ESE reduces the size of the database cache as needed. ESE does not increase the size of the cache unless there is enough database Ibind O pressure to prove that it should be increased. On servers with at least 2 GB of RAM, the minimum default database cache size for Exchange 2007 is 512 megabytes (MB).

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