Migration Testing

hpap · Post by **hpap** » Thu Jan 15, 2015 7:51 am

I've started playing with Zimbra to replace our Exchange server and so far i'm liking it.
I was going to run a test migration, just to see how long it would take and what things would like afterwards. Including performance of the server it would be placed on.
So I was reading the migration documentation and either I've overlooked it or it was not stated anywhere. When you preform a Migration are the emails, contacts, calendar all left in tact in the source environment or are they deleted?
I've gone through several different systems. In looking for a replacement and some had a "test mode" that had to be set as the live migration would delete as it went.

jorgedlcruz · Post by **jorgedlcruz** » Thu Jan 15, 2015 8:19 am

Hi hpap,

You didn't tell us which version of Exchange you has or the Zimbra Collaboration version that you are trying.

The idea with the migration, is keep all the data in the Exchange and migrate (copy) it to the Zimbra Server.

Best regards

hpap · Post by **hpap** » Thu Jan 15, 2015 9:03 am

I am sorry about that. It's SBS 2003 - Exchange version 6.5 SP 2 and ZCS Network Edition 8.6.0 GA.

Wayne Eveland · Post by **Wayne Eveland** » Thu Jan 15, 2015 2:07 pm

With the limited testing I've done with a few small accounts on my dovecot server, everything stays in place on the old server.

Wayne Eveland · Post by **Wayne Eveland** » Thu Jan 15, 2015 2:08 pm

Sorry didn't see it was SBS, please disregard my previous thought.

hpap · Post by **hpap** » Fri Jan 16, 2015 12:18 pm

Since it was said it would copy the data not move the data. I rand a test and was getting a lot of errors.

I tired both the legacy and the newer version.

The newer version, the logging does not work so I do not have any errors. All I can say is that a couple users i tired to migrate would not and the Public Folders would just return a "Null Response"

The Legacy Migration wizard, did give some proper errors.

16-01-2015 13:13:57 [3548]: storeUtils::Init Failed

16-01-2015 13:13:57 [3548]: **Warning**:COM Exception: 80004005 at mapiMapiObjects.cpp(2844)

16-01-2015 13:13:57 [3548]: **Warning**:COM Exception: 80004005 at mapiMapiObjects.cpp(2844)

16-01-2015 13:13:57 [3548]: **Warning**:COM Exception: 80004005 at mapiMapiObjects.cpp(2844)

16-01-2015 13:13:57 [3548]: Clearing internal progress log entries

16-01-2015 13:13:57 [3548]: Entries cleared

16-01-2015 13:13:57 [3548]: Deleting mapi folder list

16-01-2015 13:13:57 [3548]: **Error**:while importing mailbox <account>: error_threshold_reached. Failed to process too many items.

While at the moment I do like the system, this migration issue does concern me some. As a PST migration would not be possible since the avg mailbox size for our users is 4GB and having todo a PST migration would be far to time consuming.