You can increase MQIS performance on a server by increasing the number of connections between the MSMQ service and the local MQIS. You can specify between 1 and 1000 connections; 1 is the default. Each MQIS connection requires one additional client license.
Note If you are using the limited version of SQL Server 6.5 that is included with MSMQ, do not use more than five connections, or MQIS performance will degrade.
Note You can also increase MQIS performance by putting the MQIS data and log devices on separate physical drives. However, this can be done only when installing MSMQ servers; after the MSMQ server is installed you cannot move the data or log devices.