cancel
Showing results for 
Search instead for 
Did you mean: 

Test restore to /dev/null

Doctorski
Level 5

Hi,

     I want to test restore performance and was wondering if there is a way to restore to /dev/null ?

Many thanks - Darren

 

 

1 ACCEPTED SOLUTION

Accepted Solutions

Nicolai
Moderator
Moderator
Partner    VIP   

This is what you are looking for :

Documentation: How to use the GEN_DATA file list directives with NetBackup for UNIX/Linux Clients for Performance Tuning

http://www.veritas.com/docs/000091135

The GEN_DATA file directive create random data in memory and store it as real data on disk or tape. But the restored data go nowhere other than memory. Perfect for performance testing.

HIGH RECOMMENDED !

View solution in original post

7 REPLIES 7

revarooo
Level 6
Employee

Nope, not that I have heard of.

Will_Restore
Level 6

I restored /dev/null & it was really quick but nothing was there! 

OK sorry, bad joke. 

----

As to your query, you can try duplicating the image.  See this old thread:

http://www.backupcentral.com/phpBB2/two-way-mirrors-of-external-mailing-lists-3/symantec-netbackup-18/bpverify-1-is-a-joke-is-it-possible-to-restore-to-dev-nul-53379/

 

revarooo
Level 6
Employee

Why not just restore to an alternate location and delete the contents once you are done?

That is what I would do.

Doctorski
Level 5

Thanks Will ;)

We have been restoring to alternate locations but we are seeing some unexplained throughput issues on a particular server and I wanted to rule the disk / I/O out.

 

 

 

WVT
Level 4
Partner Accredited Certified
Either prove it is disk io, somewhat easy. Or send it somewhere that you are sure is faster than anything in the chain...flash disk, or a RAMdisk (depending on size.)

WVT
Level 4
Partner Accredited Certified
Either prove it is disk io, somewhat easy. Or send it somewhere that you are sure is faster than anything in the chain...flash disk, or a RAMdisk (depending on size.)

Nicolai
Moderator
Moderator
Partner    VIP   

This is what you are looking for :

Documentation: How to use the GEN_DATA file list directives with NetBackup for UNIX/Linux Clients for Performance Tuning

http://www.veritas.com/docs/000091135

The GEN_DATA file directive create random data in memory and store it as real data on disk or tape. But the restored data go nowhere other than memory. Perfect for performance testing.

HIGH RECOMMENDED !