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Kemp loadbalancer or Microsoft NLB?

Posted on 2013-01-14
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Last Modified: 2013-01-22
Hey

We have just recieved 2 x KEMP loadbalancer for a web projekt.

Someone told me to use it for our RDS env. (today we have 2 x dedicated redirectors and Connection Broker)

But why - what is the advantages by using the KEMP? (we still have to use RDS connection broker)

Thanks in advance

Mike
Michael
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Question by:mikeydk
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8 Comments
 
LVL 37

Assisted Solution

by:Jian An Lim
Jian An Lim earned 400 total points
ID: 38776873
There is no strong advantage by using KEMP

KEMP will be a good investment if there is more than 2 technologies required a HLB. if not, nothing else. Windows 2008 have developed it's own redundancy, and the difference we are talking maybe 2 second to 30 second

http://www.virtualizationadmin.com/articles-tutorials/vdi-articles/general/remote-desktop-server-farms-explained-part1.html
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LVL 22

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by:eeRoot
eeRoot earned 400 total points
ID: 38776926
There *MAY* be an advantage to a hardware load balancer over software based, but it depends entirely on the size and configuration of your environment.  In general, 3rd party options for load balancing have a greater ability to detect issues such as a server's web/RDS/etc service not responding.  Are you having any problems with the current system?
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btan earned 800 total points
ID: 38777055
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LVL 37

Expert Comment

by:ArneLovius
ID: 38778048
After much fun and games with NLB, I would always use "something else"
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LVL 25

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by:Coralon
Coralon earned 400 total points
ID: 38781070
I'm with ArneLovius.. NLB is kind of the "last resort" load balancing.  If you have a virtual host server, you can get a Citrix Netscaler VPX (free version) to do the load balancing.

Coralon
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LVL 37

Expert Comment

by:ArneLovius
ID: 38781192
I tend to use haproxy, in combination with keepalived to manage the VIP and unison to keep the config in sync (and reload haproxy on changes) across two physical or virtual boxes, after all, the loadbalancer should also be HA...

I wasn't aware of a free version of Netscaler, there is a trail, but I thought it was limited to 90 days ?
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LVL 64

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by:btan
btan earned 800 total points
ID: 38781375
The thing about the Kemp is it stated even to perform the token routing load balancing even without the broker or session directory. The load balancer or most of this group has joined themselves as application delivery controller which in this case, they are RDP aware. Thought one interesting yet important point is that health monitor should be rdp based and not just ip stack based as we are concern on the services up so as not ro have false alarm even when host is not down.
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LVL 37

Expert Comment

by:ArneLovius
ID: 38782050
HAProxy also has RDP load balancing and persistence capabilities

http://code.google.com/p/haproxy-docs/wiki/persist_rdp_cookie
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