Forum Discussion

josh1432's avatar
josh1432
Level 2
10 years ago

FSDepends Registry Value and it's impact on Backup Exec's functionality

On Windows Server 2008 R2 Standard, I have been trying to create a VM through Hyper-V. The following error      "A Virtual Disk Provider for the specified file was not found" was displayed, ...
15
Backup and Recovery
Backup Exec
Backup Exec Appliances
Windows Server (2003-2008)
  • VJware's avatar
    VJware
    10 years ago

    Afaik, fsdepends.sys is a mini-filter driver and not directly called / used by Backup Exec. When BE loads its tape driver, it conflicts with fsdepends.sys being loaded as well. By setting the registry key to 0, it allows the fsdepends.sys to load immediately during boot up and thereby avoiding the conflict with the tape drivers. fsdepends.sys actually tracks file system dependencies and i believe either having a read at Windows Internals or checking with MS will provide more details.

    Btw, it is originally a MS article and since it affects BE (and other backup software which supports tapes), it has been referenced on the other vendor sites. (I have posted an example link below) And as pkh suggested earlier, if you really would like more detail as to why fsdepends.sys does, then MS is indeed the appropriate place to ask.

    Original MS issue - https://support.microsoft.com/en-us/kb/2013544

    KB from Appasure which is similar to the BE's one - https://support.software.dell.com/appassure/kb/119790

     

pkh's avatar
pkh
Moderator
10 years ago

Very simple.  BE has a problem and the problem is traced to the problem described in the MS KB, so the solution to the BE problem is that given in the MS KB.

1) FSDepends is part of Windows.  If you want to know what it does, you should ask MS.

2) BE might not be using FSDepends directly.  It could be using another function in Windows which in turns depends on FSDepends.

3) How is all these questions related to your stated problem of not being able to create a VM which is a MS problem and not a BE problem.

Note that this is a user-supported forum and nobody, including Symantec employees, are obligated to respond to your postings.