[THIN] Re: Zone Data Collector Enquiry

  • From: "Jeremy Saunders" <jeremy@xxxxxxxxxxxxxxxxxxxx>
  • To: <thin@xxxxxxxxxxxxx>
  • Date: Mon, 8 Aug 2011 16:05:22 +0800

I think that removing a dedicated ZDC from your environment would be a
mistake. As per best practice, when there are either 150 or more concurrent
users, or 5 or more servers in a Zone, there should be a dedicated Zone Data
Collector for the zones that carry that load. This will ensure the efficient
and fast servicing of application requests. A dedicated data collector is
simply a XenApp server that carries no user load, so that all its processing
power goes towards managing the zone. The Dedicated Zone Data Collector
should be at the top of the list in the Web Interface configuration, as it
will act as the primary XML Broker and STA Server. Other servers will be
listed, but only used for failover, and not for load balancing.





From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx] On Behalf
Of Loren Wheatly
Sent: Sunday, 7 August 2011 8:41 AM
To: thin@xxxxxxxxxxxxx
Subject: [THIN] Re: Zone Data Collector Enquiry



Yes, we have 10 servers per site.  All servers in 1 zone due to the fact we
have gig links.  Good idea...  I may look at using 1 physical server per
site as ZDC.  Will look at limiting connections to perhaps 20 users to
ensure they are not starved..  What are the implications from a ZDC
perspective if the servers are busy whilst requests are coming thru?  Will
Citrix connections be slower?

Thanks for the great suggestion


On Sat, Aug 6, 2011 at 11:30 PM, Greg Reese <gareese@xxxxxxxxx> wrote:

I would do a dedicated zdc and then a secondary zdc with a load rule
to take fewer users than other servers.

You said you have 20 servers. Is that 10 per site? You might be able
to get away with just a reduced user load on the primary zdc at each
location then.

There's overhead for being a zdc. You don't want to starve it.

On Aug 6, 2011, at 8:15 AM, Loren Wheatly <lorenwheatly@xxxxxxxxx> wrote:

> Hi
> I have a farm of 20 Windows 2003 XenApp 4.5 servers (Physical) across 2
sites which are connected by dual Gig links.  I have a dedicated ZDC which
is virtual.  Im looking demising the ZDC and making one of the 20 existing
Physical servers the ZDC.  What are peoples thoughts on this?  Is it
preferable to have a VM ZDC solely for this function?  My farm is
underutilised - runs at 50% so there is capacity.  Wondering what your
thoughts and what best practice is.
> Also are there any issues with running the ZDC function on a WIndows 2008
server?  All other servers in the farm are Windows 2003..
> Thanks

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