05-06-2007 05:22 PM
After hours of testing I finally figured out why my backups were taking way to long to finish. Now I need to find a way around the solution that I have come up with.
Now for what I was doing. I tested backing up 3.6 GB with 5,000 files and 700 folders. Note: this is with Veritas 10d.1 with the latest hotfixes and backup up to disk.
Explorer: 6:22
Veritas: 22.20
Veritas Fix: 4:17 this time includes verify
I was able to break the speed barrier by removing hotfix 27(for those of you that don’t know this is to pre allocate disk space to reduce/eliminate fragmentation.).
I looking for suggestions on how to re-enable hotfix 27 and keep the fast backup time. I would really like to re-enable this because before the fix I had to delete everything off of disk every couple of weeks due to high fragmentation.
Thanks.
05-07-2007 10:50 AM
05-07-2007 11:48 PM
Are your backups relatively consistent in size? You don't mention your backup strategy, but here's how I use B2D with pre-allocate:
I have a set of data that changes daily, but is fairly consistent in size - about 120Gb, which, with software compession on the B2D files, comes down to approx 33Gb.
I want a full B2D daily.
So, I created a B2D folder and set the max. size to 40Gb. I also created a media set for these B2D files with overwrite protection of 6 days.
Sure, the 1st time through the cycle it takes time each day to pre-allocate the 40Gb B2D file, but after the 1st time through, the file is there and is re-used a week later.