Migration question Migration question SNATCHMASTER (MIS) (OP) 8 Jun 09 11:26 The company I am with is on netbackup. We are going to start using commvault ver.8 (windows/unix)I my questions is can I have both agents installed on the same server. Thanks. RE: Migration question 605 (Instructor) 8 Jun 09 13:09 This should not be a problem if they are clients only and if they use different ports. RE: Migration question SNATCHMASTER (MIS) (OP) 8 Jun 09 13:27 What is the default port for commvault Thanks. RE: Migration question 605 (Instructor) 8 Jun 09 15:39 See Books Online - look for 'Firewall Considerations'. RE: Migration question Psy053 (TechnicalUser) 9 Jun 09 19:03 You can have both agents installed, however there is more to take into consideration other than just operating ports.If you are planning on having both products running, you need to be aware how each one selects data for backup operations. RE: Migration question CraigMcGill (TechnicalUser) 17 Jun 09 18:49 I would echo Psy053's comments. I've found that full backups with competing products are not a problem, but incrementals are another story.By default, CommVault uses the Micro$oft Windoze change journal to select files for an incremental/differential backup (am assuming we're talking Windoze here - all bets are off for Unix). That's fine, BUT, some competing products which use the archive bit for file selection clear that bit after backup. Now you'd think that with CommVault using the Windoze change journal to select files for incros and another product using a file's archive bit, they wouldn't impact on each other. Bzzzzt! Wrong! The action of clearing a file's archive bit is a "change" as far as Windoze is concerned, so results in the file being put into the change journal. Along comes poor CommVault and sh*ts itself when it sees just how much it has to backup as part of that incremental. I can just hear it now: "What the? How come they have changed 45 million files and I have 45 million files to backup for tonight's incremental?". The answer is: another backup product cleared the archive bits of those files resulting in them all being put into the change journal.In summary, competing backup products are OK to run side by side, provided you don't mind HUGE incremental backups and aren't worried about all the I/O 2 products will generate. But best stick to one eh?