I was wondering the exact same thing. I am using a FAS940c with Netbackup 4.5 MP3. Even if you use ndmpcopy (which by the way is extremely cool for migrating files from filer to filer) it's slow as dirt on phase I. And you are right, there is little to no cpu usageage and disk i/o is low.
Once it gets into the later phases it starts ripping like crazy. I am not sure if this is "working as designed" but I also noticed the restore time is insane. I was dumping 1.4M files as a test, it took 3hrs 13m to complete my backup (131 GB). Now, the really scarry part is, have you tried a restore. To restore 1 file, took me about the same time, I guess it reads the entire dump beginning to end despite the selected files.
Jerry
--- Moshe Linzer Moshe.Linzer@nsc.com wrote:
Phase I of ndmp (mapping regular files) is running very slowly on my FAS960 with 6.4R1 and Veritas Netbackup 4.5 FP4 I have a volume with around 17M files, and this phase takes 7 hours for an incremental dump! On a vol with 15M files, it takes 4 hours! CPU usage is low, even during backup. Is this a bug in 6.4 or is there something that can be done about this?
Thanks,
Moshe
Moshe Linzer IT Manager National Semiconductor, Israel Phone: 972-9-970-2247 Fax: 972-9-970-2001
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