Re: Backup running for a long time (183 Views)
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Regular Advisor
Posts: 122
Registered: ‎07-17-2013
Message 1 of 2 (210 Views)

Backup running for a long time

I am taking filesystem backup of a shared folder of size 3.5TB andused is 2.9TB. This backup takes 5 days to complete. I am using HP DP 7.    I wonder why such a long time.

HP Expert
Posts: 1,697
Registered: ‎08-14-2013
Message 2 of 2 (183 Views)

Re: Backup running for a long time

Are you backing up to Tape or a VTL?  If backing up to tape, I would look at the number of objects being backed up, and, in the Drive Properties in the Destination tab of the Backup Specification, and find out what your Concurrency is set to (for VTL, it should be set to '1')

 

Physical tape drives need a lot of Data fed to them, otherwise, when the tape buffer empties, the drive will stop wait for the Tape Buffer to fill, reposition the tape, and start writing again.  For physical tape drives, we normally recommend that consurency be set to 10 or 12, which is the amout of data streams being to the device at one time, and will normally keep teh tape buffer filled.

 

Of course, if you don't have enough Data Streams to meet the concurrency, there is not much that can be done about this

 

The other thng I can recommend is to add a couple of lines to the 'omnirc' file on your media agent.  The 'omnirc file does not exist by default, if you don't have one, it can be created using Notepad on Windows systems, or by using the UNIX 'touch' command

 

    touch /opt/omni/.omnirc

 

Windows 2003

     Program Files -> Omniback -> omnirc

Windows 2008

     Program Data -> Omniback -> omnirc

 

I wrote a support tip on the use of the 'omnir' file if you want to learn more

 

Add these lines

 

 

OB2IPCNOSENDRECVLOOP=1

OB2SHMIPC=0

 

Save the file.  On Windows, make sure the filename has no extension, like 'txt' or 'tmpl'. Also, on Windows, after editing the 'omnirc' file, you must stop and restart the DP INET service on the system where you did the editing

 

I have attached a Whitepaper that discusses Performance issues

 

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