Data Center RUM Documentation

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CAS estimated capacity is 6 million, which is the estimated number of sessions stored in the database per configuration.

A session in this context is a unique combination of server, URL, user, location, interface (AMD), application, server port, protocol browser and operating system. Depending on the server configuration, a user may be represented by an IP address, user name or both; or by an aggregate that groups together a number of IP addresses. For more information, see CAS and ADS Capacity Considerations.

Note, however, that this is an approximate limit only and, depending on the actual traffic profile and complexity, it is possible that many more sessions can be stored in the database without significant performance problems.

To check the number of sessions, view the Number of sessions chart on the Capacity Status report, which is accessible through the Tools ► Diagnostics ► Capacity Status menu option or the CAS and ADS.

Table 1. ADS Estimated Capacity shows the ADS estimates. Note that the actual capacity of an ADS for storing data in practical cases may be two to three times higher than the following estimates. The estimates take into account both the capacity of the system and an acceptable response time of the ADS-based reports (8 to 30 seconds). If these capacity figures are exceeded, the response time may become unacceptable, even though the system can physically store more data.

Table 1. ADS Estimated Capacity


Capacity Guideline

Small website

2M operations per day.

Large website

10M operations per day.

Note that the capacity limits that are configured for the installation on the Scalability screen can be exceeded. If the capacity limits are exceeded, the data is still collected but a warning is displayed.

For the details of recommended hardware configurations for report servers, refer to DC RUM's Hardware Recommendations Guide.