That is true but what do you do when one server goes down due to a failure
or needs to be taken offline for maintenance for an extended period of time?
Without a load balancer you would half to tell the half of your user base on
the down server to manually change their configuration to point to the other
server and then tell them to point it back when maintenance was done.
With a load balancer that would be transparent to the users as a server
being down would be detected by the load balancer and all users, who would
connect to the load balancer's address and not a specific server, would then
be routed only to working servers. Additionally, you could add additional
servers to the server group behind the load balancer and users would never
know. If you added servers without a load balancer you would have to
manually reconfigure the users to balance the load.
--- J.T. Shyman
-Original Message-
From: Action Request System discussion list(ARSList)
[mailto:arsl...@arslist.org] On Behalf Of Conny Martin
Sent: Thursday, January 29, 2009 3:02 AM
To: arslist@ARSLIST.ORG
Subject: AW: possibility of Server group without load balancer?
You don't need a load balancer to use a server group. But you loose the
ability to automatically distribute the workload evenly across your
arservers and automatic failover from user's POV. Failover of Escalation,
DSO etc. will work as this is a feature of the server group. You have to
tell the half of your users to use server A and the other half to use server
B, to distribute the workload.
HTH
Kind Regards Conny
-Ursprüngliche Nachricht-
Von: Action Request System discussion list(ARSList)
[mailto:arsl...@arslist.org] Im Auftrag von patchsk
Gesendet: Donnerstag, 29. Januar 2009 08:51
An: arslist@ARSLIST.ORG
Betreff: possibility of Server group without load balancer?
We are planning to upgrade our arsystem form single server to a server
group.
I went through the white paper and the following question still remained as
unclear Can someone give information on what is the role of a load balancer
in a server group.
Can we have a server group with out load balancer ?
What we gain/loose with/without load balancer in a server group.
Current: ARSystem 6.3, solaris,oracle, db on same box as arserver
Upgrate: ARSystem7.1, solaris,oracle, two to four arservers, db on a remote
box.
Also is there anyone planning to use or any thoughts on AR7.5 in 64 bit,
heared this new version can support 64bit.
Our current arserverd crashing once the process reaches close to 4 gb ram.
Thanks in Advance
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