.vbk file vss snapshot

[devlopur]

Hi everyone,
I was wondering like how Veeam Backup and Replication using the VSS snapshot in order to take backup. As there are multiple ways like Block level and file level snapshots because that backup doesn't include the null bytes in File System such as NTFS ,So it will shrink the size of .vbk file because the Null bytes aren't present over there. So can anyone please help me with the detailed behavior of VSS Snapshot in Veeam B&R.

Thanks for your help
Devlopur

[david.domask]

Hi devlopur,

There is nothing special here, it's just a normal disk shadow for volumes.

https://helpcenter.veeam.com/docs/backu ... ml?ver=120

Please review our process here for Application Aware Processing, and this KB article which demonstrates the process. Veeam further elaborates on space savings via various data-exclusion and deduplication processes.

Are you having a specific issue with VSS during your backup jobs? If so, please share the Support Case ID for your case so we can review and advise on the situation better.

[devlopur]

Hi,
As you have suggested to i have read the info but the thing is that when i am following ntfs file system . Its not able to jump to the location which i have got from MFT table becasue the size of backup is smaller then the offset which i am getting from Data Run.


Then how to goto the data??

[david.domask]

Hi devlopur,

I'm not sure I understand, why are we parsing the MFT here? If possible, please clarify if you're having a challenge with restores, and if so, as noted above, please open a Support Case as is required when creating a topic and let the Support Team review the situation.

But there is no need for delving into the MFT or anything like that for restores, so if you are having technical difficulties, it's best to let the Support Team check it.

[devlopur]

ok like as the backup follows the file system then without MFT how it will locate the data ?

[devlopur]

hi all
I will try to explain the scenario, Actually what i was thinking of that how to get access to data as the Veeam backup and replication is using snapshot, deduplication and following the file system as well.
So what i want to know let suppose i have taken the backup of a volume that was formatted in NTFS, So Veeam will take the copy of disk and take the Backup but while taking backup the offsets of the MFT table and attributes is remained same as disk that was backup but i am not able to jump using those location because the size of backup file ( .vbk ) is small and don't have that many offsets then all i want to know how to traverse to the data. As the offset in MFT is not correct.

long story short : How can i reach to the data which i have backed up by jumping offsets?
Thanks in advance
Devlopur

[david.domask]

Hi Devlopur,

Thank you for the explanation, but again, before we get into this, why are we needing to go to the MFT here? Is there a reason the expected restore process is not working for your needs? Basically, please elaborate on why we need to be parsing the MFT; I am guessing you are correct and you're having to walk through the deduplication/compression, but there is not really a need for this.

If there is a technical issue related to the restores, please open a Support Case as requested when creating a topic, else please elaborate on the use-case here.

[devlopur]

Hi
So as this extract utility is reversing the deduplication , Can you explain me how this process works?

Thanks in advance

[devlopur]

Hi
Or else what algorithm it is using

[Mildur]

Hi devlopur

We will not share such internal information over a forum topic. No customer requires this when they can open a support case in case of an emergency.

Please provide the exact reason why you are asking about internal information or we may close this topic. You can also reach out per private message here in the forum to me.

Thank you for your understanding,
Fabian

[devlopur]

Hi

I understand that and i have got help about it that you provide extract utility to get my vhdx back but now i am unable to mount it.

Thanks