I set it up in a small test environment, and started backing up three clients into a deduplication pool exclusively. 2 windows and 1 linux system The first pass wasn't that impressive, maybe a 5% to 10% de-dup ratio and it took a bit longer than just streaming that same data to tape or disk. The second pass had a 90% deduplication ratio, mostly because just 1 week had passed since the first full backup and not every file changed. After three weeks, I had about 300GB of data deduplicated down into about 90GB of disk space. The kbytes total reported from the catalog said 300G, and df -k said 90G.
The data content of the three systems is typical for a user workstation. Email, photos, miscellaneous files. De-dup let me put many versions of those same files into a backup without actually having many copies of that file spinning on disk. And then the disk holding the de-duplicated data developed a bunch of bad sectors and I lost it all. Once I rebuild it, I'll check out the DR process for protecting your de-dup database and files. I also want to test client side de-duplication to see if that helps stream data compared to media server de-duplication alone. The media/master server is a quad core with 8g ram, and the clients are a desktop and a laptop. After seeing it run and observing the space savings it generates, I think it is a very creative way to solve some (not all) problems. It is definitely not a "set it and forget it" technology. You still need to monitor its utilization similar to how you would monitor basic disk or tape usage. -Jon ________________________________ From: Justin Piszcz <jpis...@lucidpixels.com> To: veritas-bu@mailman.eng.auburn.edu Sent: Thu, April 1, 2010 3:27:36 AM Subject: [Veritas-bu] NBU7 / De-Dupe? Hi, Is anyone using de-dupe? What kind of savings are you seeing? Justin. _______________________________________________ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
_______________________________________________ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
