Backup Central

Anyone have any experience with backing up millions of files with DP? We are about to embark on a backup upgrade and are heading to choose DP.

Thing is we currently have a large file store of over 50,000,000 files - small Tiff image files. Each file varies from 100 - 500k.

Anyone use DP to backup to disk or tape and/or with NDMP? Anyone experience any problems?

Thanks,
Reuv

Hi,

You will find many answers in the latest Performance White Paper:
http://bizsupport1.austin.hp.com/bc/docs/support/SupportManual/c01116958/c01116958.pdf

Regards,
Michael

When you deal with small files DP does not hndle them well. You need to set up a raw backup of the data, then it will complete in a timely manner. Its not neat but it does work.

We're using ndmp (DP 5.5) to backup some rather large file system stores. There's a limit on how many files a single object can contain, so if your file store has more than about 20 mill. files, you must split the object (Rather than /share - split to /share/dir1, /share/dir2, etc..). Building file lists take hours before some actual data is transfered.

We backup to both physical tapes and VTL. COPY is not supported for NDMP backup medias.

One anoying thing is that DDAR is not currently supported by DP. So any directory restore requires a full scan of all medias in the backup job. So a restore job that would take less than 15 min. had it been non-ndmp can take more than 15 hours if the backup spans several medias.

Anyone have any experience with backing up millions of files with DP? We are about to embark on a backup upgrade and are heading to choose DP.

Thing is we currently have a large file store of over 50,000,000 files - small Tiff image files. Each file varies from 100 - 500k.

Anyone use DP to backup to disk or tape and/or with NDMP? Anyone experience any problems?

Thanks,
Reuv

I believe that in DP you can turn off the tree walk function. IT may be in the global file.