Hello,
Regarding your question "I've read that most backups cannot be successfully restored. Does data compression add to this problem?" - I would like to mention here that if the backup job is 100 % successful i.e without any error or exceptions, restore job should be successful.
Therefore it is must that the backup is successful.
Regarding compression, I request you to read the following technote which talks about the compression:
Backups fail to get double the amount of the native capacity recorded to a media, even when hardware compression is being utilized.
http://support.veritas.com/docs/199542
Hope it helps you.
Regards
Additional Information :
For information on the recent VERITAS Backup Exec security vulnerabilities, including links to the downloads for the necessary hotfixes, please refer to the following document:
Patch summary for Security Advisories VX05-001, VX05-002, VX05-003, VX05-005, VX05-006, VX05-007
http://seer.support.veritas.com/docs/277429.htm
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