Error in backup 0x807800C5

I have found another work around that may work with some NAS.  Instead of pointing the backup folder to a network share, I created a VHD on the network share and mount the VHD as a local drive.  Here is what I did:

1. Start Windows 8 Disk Management, under Action, select create VHD.   Put the VHD in the NAS folder where the backup will be stored.   Select either VHD or VHDX (usable only under Windows 8 or Windows Server 2012).   Select Dynamically Expanding type and the appropriate size.  For mine, I created a 300GB VHDX.
2. A new disk will be available under Disk Management and requires initialization, formatting and letter assignment.  After this, you can perform a backup pointing to this drive and see if it works.

To mount the VHD every time the system starts up, create a scheduled task that runs the following windows command script:

1. START "Diskpart" /WAIT %SystemRoot%\System32\Diskpart.exe /s %SystemRoot%\CMD\AttachBackupVHD.script
2. The AttachBackupVHD.script contains the following DISKPART command:

SELECT VDISK FILE="NAS location\Backup.vhdx"

ATTACH VDISK

EXIT

I tested this on an Iomega/Lenovo NASix201 and Western Digital DX4000 (Windows Storage Server 2008 Essential) and the backup worked on both devices.  Backup to ReadyNas devices did not work as the connection to the VHD was lost during backup.  Your mileage may vary.

Dans mon poste précédent Je disais que je faisais une sauvegarde sans l' image système !! 9a marche du premier coup , je sauve ainsi mes bibliothèques !! Je vais faire un autre essai en sauvegardant le disque C et je vous tiens au courant !!! Dany

J'ai aussi ce problème !! Je vais essayer sans sauvegarder l' image système pour voir si ça marche ??

Je vous informerais de la suite !! Dany

Hi !

Backup to NAS from Windows 8 works ( at least to Synology DS1813+ ) IF and AFTER:

 - disable SMB2 and large packets in Synology

 - edit smb.conf and ADD “strict allocate = yes” to all Shares !!!

After that also Windows 2012 can backup to NAS !!

Hope it helps,

Christian Aichmair

Hi !

Backup to NAS from Windows 8 icluding ImageBackups worked

( at least to Synology DS1813+ ) IF and AFTER :

 - disable SMB2 and large packets in Synology

 - edit smb.conf and ADD “strict allocate = yes” to all Shares !!!

After that also Windows 2012 can do Image-backups to NAS !!

Hope it helps,

Christian Aichmair