Exchange 2003 Live Backup

we have 2 exchange 2003 enterprise edition servers on windows 2003, we are looking for a plan to be able to recover a hardware/software failures in a time frame of 1 hour max, we have 4 databases in the size of 800 GB collectively.

i need a recommendation of a backup software that would accomplish this, we are going to purchase a server to work as a standby/host one or 2 of the databases, and we are willing to purchase a raid5 nas as well.

is there a way that the backup software will create a backup copy of the database on the nas with delayed replication ( to reduce the possibility of replicating corruption) and in case of a database failure/corruption i would be able to point exchange to the nas?
if there is a hardware failure i can create the databases on the new server and still point it to the nas copy, then after hours i can copy it to the local drives on the server, this way my down time won't exceed an hour.

your help is greatly appreciated...
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Will SzymkowskiSenior Solution ArchitectCommented:
I would take a look at Exchange Recovery Backup by Lepide software. This is compatible with all versions of Exchange.

Shando1971Author Commented:
would this software accomplish all what i described in my question?
I went to their site but i don't see anything indicating that.
Simon Butler (Sembee)ConsultantCommented:
The product for this in the past was something like DoubleTake or Neverfail. No idea if they are still around.
Personally I wouldn't bother with investing in third party tools for a product that is well outside of support.
You could do everything that you want to do with Exchange 2010 or higher, using native tools.
No need for a lagged copy though because database replication cannot pass over the replication in a DAG.

800gb would easily go over two standard edition Exchange 2010 licences (working roughly on 200gb a database, maximum of four databases) so the upgrade costs would be significantly less than what you are expecting to do with Exchange 2003.

Oh and your plan will not protect you against database corruption. Corruption can take place in the past and not be noticed for some time.  


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Shando1971Author Commented:
So with exchange 2010 native tools i can create a live backup on a nas, and if the server fail, i can point the new server to the nas with an hour or less down time?

also if there is a corruption i still can restore to the same server that has the corruption from the nas or point to the backed up database on the nas itself with an hour or less down time?
Simon Butler (Sembee)ConsultantCommented:
With native tools you have two servers, both have copies of the database. In the event of a problem with server 1, server 2 takes over immediately.
No NAS involved.

In the event of a corrupt database, then you simply replicate the database back to the original server.
Although saying that, database corruption is pretty rare these days. The most common cause is outside of Exchange - suspect hard drives, storage controllers or AV software scanning something it shouldn't be.

Shando1971Author Commented:
what is this feature is called in exchange 2003, this would really do it for me?
and what version of exchange 2010 supports this?
Simon Butler (Sembee)ConsultantCommented:
It doesn't exist in Exchange 2003.

Exchange 2010 will do it - either Standard or Enterprise. There is no difference between the versions other than the number of databases it supports (5 (four and public folders) and 50).
If you install Exchange 2010 on Windows 2012 (not R2) then it will run on standard edition.

Shando1971Author Commented:
Sorry, I meant the feature name on 2010, is it high availability ?
Simon Butler (Sembee)ConsultantCommented:
Database Availability Group is the functionality on Exchange 2010 and higher.
It uses the clustering technologies (but it isn't a true cluster) to provide replication - effectively log shipping.

It is a form of high availability, which is what you are looking for.

Shando1971Author Commented:
Great , thank you Simon.
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