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'Impossible to backup ... files',
how do I know which files are not backed up?

It is possible to see which files have not been backed up, by tracking the CrashPlan PRO logs.

The CrashPlan PRO logs in the different operating systems can be found in this location:

log location

Windows Vista, 7, 8, Server 2008 & Server 2012

C:\ProgramData\CrashPlan\log

Windows XP &
Server 2003

C:\Documents and Settings\All Users\Application Data\CrashPlan\log
Mac /Library/Logs/CrashPlan
Linux /usr/local/crashplan/log
Solaris /opt/sfw/crashplan/log

 

Search the log file named backup_files_0.log for the text:
Impossible to back up

The result will look something like this:

I 04/02/09 12:58AM 332167474737380872 - Impossible to back up 11 files (next attempt within 15 minutes)

Rules directly below indicate the non-backed up files:

W 04/02/09 12:58AM 332167474737380872 - C:\WINNT\NTDS\edb.log
W 04/02/09 12:58AM 332167474737380872 - C:\WINNT\system32\config\default
W 04/02/09 12:58AM 332167474737380872 - C:\WINNT\system32\config\default.LOG
W 04/02/09 12:58AM 332167474737380872 - C:\WINNT\system32\config\software
W 04/02/09 12:58AM 332167474737380872 - C:\WINNT\system32\config\software.LOG
W 04/02/09 12:58AM 332167474737380872 - C:\WINNT\system32\config\system
W 04/02/09 12:58AM 332167474737380872 - C:\WINNT\system32\config\SYSTEM.ALT
W 04/02/09 12:58AM 332167474737380872 - C:\WINNT\System32\dhcp\j50.log
W 04/02/09 12:58AM 332167474737380872 - C:\WINNT\system32\wins\j50.log
W 04/02/09 12:58AM 332167474737380872 - D:\Exchsrvr\mdbdata\E00tmp.log
W 04/02/09 12:58AM 332167474737380872 - D:\Exchsrvr\mdbdata\priv1.stm

Until another message "Starting backup to..." appears, for example:

I 04/02/09 12:59AM 322138342948864206 Starting backup to ...

Usually, the reason is that the files are open.

With 32-bit and 64-bit Windows XP, Vista Business, Vista Ultimate, Server 2003, 2008 and Windows Small Business Server 2003 you can enable the Volume Shadow Copy Service (VSS). For Windows 2000 VSS is unfortunately no option and you need to adapt other available methods to backup these resources.

'Die Sicherung der .... Dateien ist nicht möglich'. wie kann ich herausfinden, welche Dateien nicht gesichert wurden? 'Onmogelijk om te back-uppen ... bestanden', hoe weet ik welke bestanden niet geback-upt zijn?