In my first two blog posts, I gave an overview of what Session-only mode is and how to design your XenApp 6.5 enterprise farm using this model. In case you missed these posts, please see:
Speeding up Farm Deployments with XenApp 6.5 – Part 1
Today, I’d like to wrap up this blog series by sharing some test results with you that demonstrate the performance improvements seen when using XenApp 6.5 Session-only servers.
The following tests compare the XenApp 6.0 IMA start time performance with a XenApp 6.5 Session-only server. For the test environment, a simulated WAN link was placed between the IMA data store and the member server. The WAN was configured for a 10Mb link with 200ms round trip latency. The base farm consisted of 50-servers and 100-applications.
The definitions of each test are as follows:
- Farm Join: The time it takes for the IMA service to start when the XenApp server joins the farm for the first time.
- LHC Sync: The time is takes for the IMA service to start and re-synchronize the LHC from the data store.
Figure 1. IMA service start performance for a single XenApp server over a WAN link
Figure 2. Data transfer usage to/from the data store during the IMA start process
Figure 3. Data store SQL round-trips during the IMA start process
To summarize, the Session-only mode feature in XenApp 6.5 provides:
Quicker deployment and provisioning of new XenApp servers to the farm
Reduced bandwidth and resource utilization of your IMA data store
Simplified management of deploying member servers in remote zones or sites
To learn more about Session-only mode, please refer to the Citrix XenApp 6.5 eDocs
Thank you for reading!