We are using SAN based storage. Our SAN storage is EMC Clariion CX3-80 which is Fibre channel. Does your template include Citrix on build? Normally I start with my Windows 2003 R2 template and install Citrix on each. Have seen problems with Citrix boxes that have been P2v'd or created from templates with Citrix installed. Kind of like the problems we used to see if you tried to image Citrix server. The Citrix servers appear to have adequate resources. What do your ESX hosts look like? If you are trying to VMotion them or move them with DRS and it's complaining that is usually a sign of a problem with resources on host. Check your memory and CPU reservations and resources.
_____ From: James Rankin [mailto:[email protected]] Sent: Thursday, May 07, 2009 6:40 AM To: NT System Admin Issues Subject: Re: Citrix on VMWare platform Got dual CPUs and 4GB of RAM for each server. The original server was built from scratch on VMWare and converted to a template which has been cloned for all the others. Do you use SAN-based storage? We have an IBM DS4000. One of the most notable performance hits is when the Citrix servers are migrated by the DRS, they seem to drag right into the ground at that point. 2009/5/7 Mike Semon <[email protected]> We are running Citrix MPS 4.5 on VMware ESX 3.5 u3. Our performance is ok. Citrix tells us to expect around 30 per Vm depending on type of apps. Were these Citrix servers P2V'd? Did you create them from templates? What kind of CPU and memory do you have allocated for each VM? Mike _____ From: James Rankin [mailto:[email protected]] Sent: Thursday, May 07, 2009 4:09 AM To: NT System Admin Issues Subject: Citrix on VMWare platform Anyone running Citrix MPS 4.5 on VMWare ESX 3.5? We virtualised our entire infrastructure last year. The performance of the standard systems has been excellent (for instance, our SQL servers and Exchange 2007 systems run pretty much exactly as they did before). However the Citrix servers are very hit-and-miss - slow logons, application hangs, systems freezing, etc., runs poorly when more than seven or eight users logged on to each server. I have just taken a subset of our users and put them back onto a physical Citrix server, and straight away the performance is instantly better, the logon time is considerably faster to start with. Admittedly we aren't expecting our virtualised systems to perform as well as a dedicated physical system, but the performance degradation appears to be hugely magnified with regards to the Citrix systems. Is anyone else running Citrix farms on ESX, and if so, are they experiencing similar performance issues, and how are they getting around them? TIA, JRR ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~
