Forum Discussion
julien_21453
Aug 31, 2011Nimbostratus
GTM with LTM performance
Hi everybody,
I'm planning to implement GTM on a Datacenter and I want to have your feedback about this technology. I have already installed LTM but not GTM.
What is the best practice ...
The_Bhattman
Sep 04, 2011Nimbostratus
Hi Julian,
I can only speak to my experience but here is what I think is the best practice for the GTM and LTM
That being said, the only real advantage to warrant a GTM is if you have two or more data centers that hosts applications using a single domain name(s).
Now that we got that out of the way let me answer some of you basic questions first
Q: Is it better to use a dedicated appliance or integrated with the LTM?
A: The best practice is to physically separate the LTM and GTM because
1) Redundancy - scale beyond the 2 unit appliance
2) Reach-ability - If hosted on the same appliance or Virtual M your clients might not be able to reach the GTM to do resolution.
3) Serviceability - Separated you can perform independent upgrades or fixes.
Otherwise you can host it just fine on the same appliance or same VM
Q: Can we have LTM and GTM on the same appliance with HA?
A: Yes you can without an issue.
Q: Does the performance is reduced when we use LTM and GTM together?
A: All the Appliances are sized to handle the GTM so the short answer is no. The longer answer is: depends. This is because they are sharing the same resources on a single appliance so they are prone to the same types of performance issues as any other application running on the same device.
I hope this answers some of your questions
Bhattman
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