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Exchange Backup

Posted on 2011-03-01
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Last Modified: 2012-05-11

I have been asked to answer certain things related to exchange server for furure safety.
I have been given a scenario:-
The Exchange server hosts 500 users and contains

one storage group and one mailbox store. The

size of the mailbox store is 23 GB. Every night,

a full backup is performed on the storage group.

The mailbox store fails. When you attempt to

bring it back online, the mailbox store fails to

mount. You discover that the mailbox store is

corrupted

You need to restore all the exchange mailboxes

without losing any data?

a. Restore the mailbox store and the transaction

log files REPLAY the transcation log files Do

not replay the existing transaction log files

Replay the transaction log files

b. Restore the mailbox store but not the

transaction log files. Do not replay the

existing transaction log files

c. Restore the mailbox store but not the

transaction log files. Replay the existing

transaction log files

d. Restore the mailbox store and the transaction

log files. Delete the restored transactio log

files


I think c.

Once I was asked in interview that shall disaster recovery bring the complete data. Suppose Admin takes a full backup sunday. Incremental on Monday and Tuesday. Wed differential and Thursday Incremental. Now one of a sudden the server crashes how can the complete data be recovered. I said no disaster recovery cannot. I said one should insist on the Wed data backup and Thursday data cannot be recovered. What does DR basically do how does it function?
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Question by:kunalclk
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Scovndrel earned 2000 total points
ID: 35014729
Answer :A

Explanation :You can not select to restore the database and not to restore logs. Which backup software allows you to do this? We are also assuming the database crashed and the current logs are still there (these are logs left after the last full backup). We have to assume that when performing the restore from the FULL backup, the logs are being restored to a temp location, and the last backup set option has been selected,. After the restore, the restored logs will bring the database to a consistent state - then the current logs after the last full backup will be played and the store will be mounted - thus not loosing any data.

Regarding your question about backups at the bottom:

You could restore the data set using any combination of these:
A. Restore Thursday's backup using the Sunday full backup, the Wednesday differential, and the Thursday incremental.
B. Restore Wednesday's backup using the Sunday full backup and the Wednesday differential.
C. Restore Tuesday's backup using the Sunday full backup, then the Monday incremental, then the Tuesday incremental.
D. Restore Monday's backup using the Sunday full backup, then the Monday incremental.
E. Restore Sunday's backup using the Sunday full backup.

There are two backup chains here: Full, plus every incremental, or Full, plus a differential, plus any incrementals that came after the differential.
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Author Closing Comment

by:kunalclk
ID: 35022911
tnx
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LVL 4

Expert Comment

by:Scovndrel
ID: 35022923
You're welcome. Have a great day.
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