Store VM Status Test

Each store.exe process of a server has limited amount of memory called the Store Virtual memory that it can address. This test reports statistics related to the usage of the Exchange store's virtual memory.

Target of the test : An Exchange server 2000/2003

Agent deploying the test : An internal agent

Outputs of the test : One set of results for every Exchange server being monitored.

Configurable parameters for the test

Parameters	Description
Test Period	How often should the test be executed.
Host	The IP address of the machine where the Exchange Server is installed.
Port	The port number through which the Exchange server communicates.
IsPassive	If the value chosen is Yes, then the Exchange server under consideration is a passive server in an Exchange cluster. No alerts will be generated if the server is not running. Measures will be reported as "Not applicable" by the agent if the server is not up.

Measurements made by the test

Measurement	Description	Measurement Unit	Interpretation
Largest block size	It is the largest free block of virtual memory.	MB	At no point should this value go below 32 MB. As you scale a server to accommodate more users and more usage, the server may run low on virtual memory. When a server is low on virtual memory, overall performance degrades as the low situation forces the store.exe process to use the page file and begin paging rapidly.
16MB free blocks in virtual memory	The total number of free virtual memory blocks that are greater than or equal to 16MB.	Number	At no point should this value go below 1.
Free blocks in virtual memory	The total number of free virtual memory blocks regardless of size.	Number	At no point should this value go below 1.
Large memory blocks in virtual memory	The sum of all the free virtual memory blocks that are greater than or equal to 16MB	MB	At no point should this value go below 50 MB.