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IBM TSM : My exchange database size is 4,4TB, but tsm backed up 6,4 TB!

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Last Modified: 2016-04-02
Hello experts,

I am having an issue that I dont understand with my TDP for EXCHANGE.

In fact my exchange backups size was 6,4TB (1 Full backup + Incrementals), but following an incident on the tsm application, I had to delete all my exchange backups and do a full backup of the exchange Databases.

I found out that the new total size of the database backed up is 4,4TB instead of the 6,4TB.

I don't know how to understand this, how can I avoid this type of issue?
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