RE: Exchange Server Redundancy

  • From: "Mulnick, Al" <Al.Mulnick@xxxxxxxxxx>
  • To: "'[ExchangeList]'" <exchangelist@xxxxxxxxxxxxx>
  • Date: Fri, 12 Mar 2004 17:39:29 -0500

Just to hazard a guess, it sounds like the restore may be in the way.

There's no reason I can think of that would require the restore of the
second IS. What made you do that?


From: Zoran Marjanovic [mailto:zmarjanovic@xxxxxxxx] 
Sent: Friday, March 12, 2004 11:21 AM
To: [ExchangeList]
Subject: [exchangelist] RE: Exchange Server Redundancy

Hi all,


Just to add a few words regarding CA BrightStore High Availability v9. I
tested it on 2 Exchanges 2k (SP3) + AV client and AV filter. The net had 1
separate w2k (SP4) as DC and one client (W2k Pro + SP4, Outlook XP and
OWA-IE6). I didn't use direct connection (they recommend Null Modem Cable).
It was a bit tricky to configure Exchanges (2 desktops with the same
hardware), it assumes you are starting with the new exchange environment and
there is no other software on servers, and CA never replied to my question
regarding Exchange configuration. Finally I configured exchanges. I
installed one exchange, 50 users, 2 storage groups and 4 stores on a
separate partition, made some traffic-300 MB in all stores, configured the
second exchange and restored IS backup on it, started all services and
mounted the stores, tested it from the client-Outlook+OWA, installed CA
software on both, had to change permissions on EMS-according to the
explanations logged by BS HA after the protection task failed, synchronized
them, started replication and everything was ok. Then I unplugged the first
exchange (I had a hardware problem when exchange became unavailable, no ping
reply, even it was up and running?) and the fail-over started. The second
exchange stood in for the first one, the script started all services
successfully, the computer name and IP address were replaced (spoofing), but
it could not have mounted the stores (I repeated this 3 times, every time
starting from scratch). Just to mention, after I installed the second
exchange and tested it, I didn't make any additional traffic (which was a
kind of help for CA) that means there was no data for replicating after the
synchronization was done. I would ask CA guys what now, but as they didn't
answer the first time I believe they won't do it the second time. In the
documentation they mention the Open File Replication feature, but no




Have you experienced this problem and have you tested the software and how?
As you cannot start replication before you change permissions (it is not
mentioned in CA documentation), I tried it over ADSI edit, without
propagation, and I started the task (replication) successfully. Because the
failover didn't work I did it again over ESM, adding Security tab and
propagating the changes to the lower levels, but again, everything was fine,
except the stores could not have been mounted. I tried to figure out what is
going on troubleshooting the errors from app log, but couldn't have solved


Any idea? 




-----Original Message-----
From: Tiago de Aviz [mailto:Tiago@xxxxxxxxxxxxxxx] 
Sent: Tuesday, March 09, 2004 3:17 PM
To: [ExchangeList]
Subject: [exchangelist] RE: Exchange Server Redundancy

It is much simpler because it can be implemented on a single day, it
replicates data on the bit level, it's a cheap software, and if you want,
you can user a slower machine or any other machine for redundancy.


No, while Brightstor is replicating, it doesn't know if the file is a
database or a Star Wars movie. It's all the same for him.


Tiago de Aviz


(41) 340-2363 <> 


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