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arcserve-KB : D2D Backup jobs of Hyper-V Virtual Machine fails with one of the following error messages:- There was an error in the backup task, Failed to write to virtual disk. Internal error=[-1], Failed to write to virtual disk. Internal error=[INCORRECT COMMAN

Last Update: 2016-11-23 15:53:06 UTC
Description:

The CA ARCserve D2D backups might fail with one of the following error message.

Error: Job00000059 - There was an error in the backup task.

Failed to write to virtual disk. Internal error=[-1].
 
Failed to write to virtual disk. Internal error=[INCORRECT COMMAND].

Note:- The solution suggested in this document is specific to the problem, please review the Symptoms and Cause before making the suggested changes.

Environment:

Hyper-V Guest Virtual Machines which have CA ARCserve D2D r16.0 installed.

Symptoms:

-AFStor0000.log

[04/26 13:26:59] [     ad4] [     ea4]: CDynamicVHD2::Write(2390): current position error 26806026240|26806026240
[04/26 13:26:59] [     ad4] [     ea4]: WriteToDisk: m_pCurDisk->Write failed. dwBytesToWrite[512], dwWritten[0], curPos[26806026240], DiskSize[26806026240]
[04/26 13:26:59] [     ad4] [     ea4]: Write: WriteToDisk failed. EC=4294967295

-The disk size is smaller than the volume size as per the D2D backup log- Backup-xxxxxxxx-xxxxxx-xxx.log.
 
2012-04-26 13:12:47  [DISKGEO]DiskID=3759135306, DiskSize=26806026240, UsedDiskSize=25726374912, Cylinders=3258, MediaType=12, TracksPerCylinder=255, SectorsPerTrack=63
2012-04-26 13:12:48  CVolumeReplicator::OpenVolume::volume=\\.\C:, DiskLength=26806187520, VolumeLength=26806187008
 
-The disk size is smaller than the partition size as per the Windows system information. 


             
Cause:

-Third Party Utilities and Tools were used to convert physical server to virtual machines. During the conversion, the partition and disk information was not configured correctly.

-As the size of the partition/volume is greater than the size of the actual disk, D2D is trying to write beyond the disk boundary and failing at the end. Sometimes the backup fails at the beginning of the job.

Solution:

-The solution is to increase the disk size, the steps advised in the following Microsoft TechNet Article needs to be performed:- 
http://social.technet.microsoft.com/wiki/contents/articles/266.how-to-increase-the-vhd-size-in-hyper-v-r2.aspx

Note:- Please go through the instructions carefully before making the changes.

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