It's not just about performance, but availability and management too. Joe From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx] On Behalf Of Webster Sent: Tuesday, November 03, 2009 2:03 PM To: thin@xxxxxxxxxxxxx Subject: [THIN] Re: Dedicated ZDC The old Advanced Concepts Guide said you needed a dedicated ZDC when you reached 50 servers. But every Farm is different and you need one when application listing and response is slow for you. Webster From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx] On Behalf Of Angela Smith Subject: [THIN] Dedicated ZDC Hi Im building a new farm and was wondering if I really need to dedicate a server for the Zone Data Collector. I have 14 Windows 2003 XenApp 4.5 servers in the farm which will be around 80% utilized. I was going to use a Virtual Server as the dedicated ZDC but am wondering if my farm is too small to warrant a dedicated server. Can I use one of the Citrix XenApp 4.5 servers or should I dedicate a server for ZDC? Thanks Ang