RE: Exchange replication
- From: "Mulnick, Al" <Al.Mulnick@xxxxxxxxxx>
- To: "'[ExchangeList]'" <exchangelist@xxxxxxxxxxxxx>
- Date: Wed, 21 Jan 2004 14:17:12 -0500
Interesting. In case of hardware based solution, you would have the same
requirement and be able to meet it. The difference is where the replication
code runs and what you get when done. If the code runs on the hardware,
then it's abstracted from the operating system and application. This often
results in a more stable implementation in my experience. It also tends to
have a different cost associated.
In either case, if there is corruption, then that will very likely be
replicated as well. I mean, that's the point, isn't it? To have an exact
replica of the original? Bifurcating the writes is a great way to do this.
Setting up a geo cluster may also be an option if distance is a concern.
I'd say if disk is the only concern, then use RAID sets and a cluster (MCS
cluster) to mitigate the risk. The software replication products are really
for geographically separate systems in case of datacenter disaster vs.
hardware failure.
MCS would be a lot easier and it's built into the OS already.
Al
-----Original Message-----
From: Zoran [mailto:zmarjanovic@xxxxxxxx]
Sent: Wednesday, January 21, 2004 11:13 AM
To: [ExchangeList]
Subject: [exchangelist] RE: Exchange replication
http://www.MSExchange.org/
In case of hardware clustering, I would have shared hard disk(s). If a
disk(s) goes down I would need time to put it back in operational state.
In case of software clustering or simple volume replication, I would have a
fresh copy of my exchange at any moment.
> What is the end goal that you are trying to achieve? I've seen these
> in action in a previous job, but I'm not overly impressed with the
> technical abilities of the solution. It's a software level solution
> which to me discounts it before even opening the box. For my money,
> I'd prefer a more hardware based solution wherever possible such as a SAN.
>
>
> Interested to hear what you are trying to accomplish with the solution.
>
> al
>
> -----Original Message-----
> From: Zoran [mailto:zmarjanovic@xxxxxxxx]
> Sent: Wednesday, January 21, 2004 7:51 AM
> To: [ExchangeList]
> Subject: [exchangelist] Exchange replication
>
> http://www.MSExchange.org/
>
> Hi people,
>
> Does anyone have experience with a software that could be used for
> real time replication of exchange stores. I found: Double Take and Geo
> Cluster (too expensive for me), Veritas-volume replicator, Marathon
> Technologies-FT Server, Legato-Co-Standby Server. Only Legato offers
> tryal version, but I would be happy to get a piece of advice from smb who
used one of these.
> And one more question. What do you think is there any chance that this
> kind of software recognise a logical error on source server and stop
> replication instead of copying the error to the target server?
>
> Thanks
>
> Zoran
>
> ------------------------------------------------------
> List Archives:
> http://www.webelists.com/cgi/lyris.pl?enter=exchangelist
> Exchange Newsletters: http://www.msexchange.org/pages/newsletter.asp
> Exchange FAQ: http://www.msexchange.org/pages/larticle.asp?type=FAQ
> ------------------------------------------------------
> Other Internet Software Marketing Sites:
> Leading Network Software Directory: http://www.serverfiles.com
> No.1 ISA Server Resource Site: http://www.isaserver.org Windows
> Security Resource Site: http://www.windowsecurity.com/ Network Security
Library:
> http://www.secinf.net/ Windows 2000/NT Fax Solutions:
> http://www.ntfaxfaq.com
> ------------------------------------------------------
------------------------------------------------------
List Archives: http://www.webelists.com/cgi/lyris.pl?enter=exchangelist
Exchange Newsletters: http://www.msexchange.org/pages/newsletter.asp
Exchange FAQ: http://www.msexchange.org/pages/larticle.asp?type=FAQ
------------------------------------------------------
Other Internet Software Marketing Sites:
Leading Network Software Directory: http://www.serverfiles.com
No.1 ISA Server Resource Site: http://www.isaserver.org Windows Security
Resource Site: http://www.windowsecurity.com/ Network Security Library:
http://www.secinf.net/ Windows 2000/NT Fax Solutions:
http://www.ntfaxfaq.com
------------------------------------------------------
Other related posts:
