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All of my research says that it is for load balancing and failover....
steps from the help file include  "Determines where replicas reside and
whether they are marked out of service or pending delete. Checks the server
availability index of each server that contains a replica. Checks the
availability of the server by pinging the HTTP port or the HTTPS port,
depending on the client request. Eliminates any servers that are not
reachable or are RESTRICTED. Eliminates any servers that are BUSY or in the
MAXUSERS state. Selects a server from those remaining. If there are no
servers remaining, the ICM chooses a server that is BUSY or in the MAXUSERS
state, if one is available. If there are multiple servers remaining, the
ICM chooses the server with the lightest current workload".

Fail over occurs: When a server fails, When an HTTP client is connected to
a server that fails, the client receives a message saying that the server
is not responding. To fail over to a different replica, if one is
available, the user must contact the ICM again. The user can do this in the
following ways: Click the Back button in the browser one or more times to
connect to a page through the ICM: Use a bookmark: Type the URL
The user may or may not have to reauthenticate with the new server. This is
determined by the following factors: If the user already authenticated with
the new server during this session, no authentication is necessary If the
HTTP client and the server both support SSL3, reauthentication occurs
automatically


Do you remember what the cost is associated with Puakma's Web Booster? We
are a small shop and would prefer not to spend a lot. We thought about just
doing a DNS round robin, but then how do we handle the cache?

We are a small shop, only about 550 mail databases, probably only around
200 web users. Maybe 100 web users and 200 Notes clients connected to the
system at anyone time.

Thanks,
Scott Reece
System Administrator
City of Bend
sreece@xxxxxxxxxxxxx
Office - 541-388-4426


"Once you say you're going to settle for second, that's what happens to you
in life. "  --JFK




                                                                           
             Chris Whisonant                                               
             <Chris.Whisonant@                                             
             comporium.com>                                             To 
             Sent by:                  Lotus Domino on the iSeries / AS400 
             domino400-bounces         <domino400@xxxxxxxxxxxx>            
             +sreece=ci.bend.o                                          cc 
             r.us@xxxxxxxxxxxx                                             
                                                                   Subject 
                                       Re: Internet Cluster Manager        
             06/27/2006 10:33                                              
             AM                                                            
                                                                           
                                                                           
             Please respond to                                             
              Lotus Domino on                                              
               the iSeries /                                               
                   AS400                                                   
             <domino400@midran                                             
                  ge.com>                                                  
                                                                           
                                                                           




Scott, I have seen a good bit of negative feedback with ICM. I have been
testing out Puakma's Web Booster. It will do load balancing/failover for
http. Actually, from my understanding, ICM will only do load balancing,
right? In my environment I don't want http to be load balanced because our
cluster iSeries has a lot less horsepower. Puakma didn't initially have
this, but they have since updated it to run in strict failover mode.

I also know someone who is running a BlueCoat SG appliance for this.

Also, I have not tested ICM personally, but when I was researching this
last year I saw where customers didn't recommend ICM.

Chris Whisonant
Comporium
Senior Mid-Range Systems Administrator
IBM eServer Certified Systems Expert - iSeries Technical Solutions V5R2
IBM Certified System Administrator - Lotus Notes and Domino 6/6.5
IBM Certified Associate Developer - Lotus Notes and Domino 6/6.5
803.326.7270 | 803.326.6142 fax

domino400-bounces+chris.whisonant=comporium.com@xxxxxxxxxxxx wrote on
06/27/2006 12:55:23 PM:

Is anyone using ICM? if so how is it working for you? I would like to
use
it for our mail servers, but I also want to hear what anyone you think
before I configure it. Is it going to be a performance hit to our mail
servers? is it pretty seamless? What about the unread marks problems?
please any feedback would be greatly appreciated, good or bad.

Thanks,
Scott Reece
System Administrator
City of Bend
sreece@xxxxxxxxxxxxx
Office - 541-388-4426


"Once you say you're going to settle for second, that's what happens to
you
in life. "  --JFK


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