[THIN] Re: Redundant Data Collector
- From: Euan Cooper <Euan.Cooper@xxxxxxxxxxxx>
- To: "'thin@xxxxxxxxxxxxx'" <thin@xxxxxxxxxxxxx>
- Date: Thu, 1 Apr 2004 12:22:46 +1200
Hmmm not quite ....
As Ryan says - you can only have one data collector per zone - if that data
collector goes offline an election is held (similar to Master browser
elections in Windows or ICA Browser elections pre MF XP). This happens
automatically - you do not have to do not have to set anything to make this
happen. The setting of a server's preference helps determine which server
will win this election and become the new data collector. Also if the
original server has a higher preference it will become the DC when it is
bought back on line.
Setting a server's preference enables you to control which server will be
the DC in your zone and which server will take on that role should the most
preferred server go offline. In the manual pages I referenced in my first
post, Citrix recommends having a dedicated DC (a server that does not host
applications for client sessions) in large zones and enterprise networks
with high client traffic.
If you are planning to take the current DC offline you can change it's
preference lower and make another server the most preferred for your zone
and it will take over the dc role for the zone while the first server is
still online. You can then take the first server offline with out
disrupting the DC function in your zone.
I am not sure if this is necessary or not but tend to do this when shutting
down my most preferred DC during working hours.
-Ec
-----Original Message-----
From: Ryan Lambert [mailto:rlambert@xxxxxxxxxxxxxxx]
Sent: Thursday, 1 April 2004 11:35 a.m.
To: thin@xxxxxxxxxxxxx
Subject: [THIN] Re: Redundant Data Collector
Hi,
More for Dan's clarification, as by this argument I think you both have
an understanding of zones and DCs... :-P
Dan, your initial question and your subject line are kind of
contradictory... but that's ok. Here's the scoop, as Roy explained
earlier...
If you want two have two data collectors because Data Collector A is
getting overwhelmed, and you would like to split some of the load onto
Data Collector B... you need to have another zone. You can not have two
data collectors within the same zone in Citrix. Be advised, that Citrix
does not recommend having a lot of zones, due to the fact that
communication between the DCs occurs during
logon/logoff/disconnect/connect, and changes in server loads. If you are
not seeing significant performance problems with your current "Most
preferred" DC, you should not create another zone.
If you want to have two data collectors for "redundancy" (eg: Data
Collector A goes down and you want Data Collector B to pick up), you can
do this by setting the preferences in CMC as Phillip stated.
-----Original Message-----
From: Euan Cooper [mailto:Euan.Cooper@xxxxxxxxxxxx]=20
Sent: Wednesday, March 31, 2004 6:10 PM
To: 'thin@xxxxxxxxxxxxx'
Subject: [THIN] Re: Redundant Data Collector
What Dan actually posted was "I would like to have at least 2 data
collectors in my farm" no way your instructions would achieve this -
which is why I suggested RTFM ....
-----Original Message-----
From: Philip Walley [mailto:philip.walley@xxxxxxxxxxxxxx]
Sent: Thursday, 1 April 2004 2:12 a.m.
To: thin@xxxxxxxxxxxxx
Subject: [THIN] Re: Redundant Data Collector
Why do I need to read those pages? I know what a zone and a ZDC do. All
Dan asked was how to set another server as a preferred zone DC and that
is what I posted, instructions, which is a hell of a lot more than I can
say for you.
Philip Walley
Sr. Network Engineer
Consultrix Technologies
Memphis, TN.
Consultrix Help Desk: (601) 956-8909
Memphis Office: (901) 383-1300=3D20
Memphis Fax: (901) 383-1375
-----Original Message-----
From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx] On
Behalf Of Euan Cooper
Posted At: Tuesday, March 30, 2004 3:40 PM
Posted To: The thin mailing list
Conversation: [THIN] Re: Redundant Data Collector
Subject: [THIN] Re: Redundant Data Collector
I think you both need to read pages 189 to 192 of the Metaframe XP admin
guide - this section covers most of what you need to know about data
collectors.
-----Original Message-----
From: Philip Walley [mailto:philip.walley@xxxxxxxxxxxxxx]
Sent: Wednesday, 31 March 2004 6:20 a.m.
To: thin@xxxxxxxxxxxxx
Subject: [THIN] Re: Redundant Data Collector
In the CMC, right click on your farm, go to properties. In the
properties, you have a zones selection. Highlight the server that you
wish to make a DC and choose the "Set Preference" option. You can then
choose to make your server most preferred.
Philip Walley
Sr. Network Engineer
Consultrix Technologies
Memphis, TN.
=3D3D20
Consultrix Help Desk: (601) 956-8909
Memphis Office: (901) 383-1300=3D3D20
Memphis Fax: (901) 383-1375
-----Original Message-----
From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx] On
Behalf Of Dan Poon Posted At: Tuesday, March 30, 2004 10:54 AM Posted
To: The thin mailing list
Conversation: Redundant Data Collector
Subject: [THIN] Redundant Data Collector
Hi Everyone,
I have 8 citrix xp servers and currently one data collector. I would
like to have at least 2 data collectors in my farm but, I can not find
the option on the CMC.
Can someone point me in the right position.
Thanks,
Dan
********************************************************
This weeks sponsor Emergent Online.
Emergent OnLine is the leading server-based computing consulting integration
firm in the nation. Emergent OnLine delivers expert
consulting services you can depend on.
http://www.go-eol.com
**********************************************************
Useful Thin Client Computing Links are available at:
http://thin.net/links.cfm
***********************************************************
For Archives, to Unsubscribe, Subscribe or
set Digest or Vacation mode use the below link:
http://thin.net/citrixlist.cfm
Other related posts:
