Cisco Cisco Administrative Workstation Installation Guide

The primary Distributor AW maintains an active connection to the real-time 
server through which it receives real-time data. The secondary Distributor AW 
also maintains connections to the real-time server; however, these connections 
remain idle until needed (for example, in cases where the primary Distributor AW 
is unavailable for some reason). In sites that have two Distributor AWs, the Client 
AWs are configured to automatically switch to a secondary Distributor AW if the 
first distributor becomes non-functional for any reason. 

There is no set limit to how many Client AWs can be served by a Distributor AW. 
However, in order to serve multiple Client AWs the Distributor AW must be 
configured with at least 128 MB of RAM with 64 MB of that RAM dedicated to 
SQL Server.

 

Cisco offers a high-end ICM Admin Workstation platform for 

Distributor AWs. Client AWs can run on the standard ICM AW platform.

Historical data are stored in the ICM central database in summary five-minute and 
half-hour intervals. The ICM system also saves call detail records in the central 
database for each call routed. In most ICM environments, historical data is also 
forwarded to a Distributor AW where they are stored in a special database. The 
Distributor AW then acts as an Historical Data Server (HDS) for the admin site. 
Admin Workstations at the site query historical data from the HDS rather than 
directly from the Logger (see 

).