Credentials for storage unit was not found

[pepee]

Hi guys,
I have a very serious problem that I can not solve. All backups sporadically fail (even single VMs in a job) on a DD Boost DFC backup repository with the following error:
Error: Credentials for storage unit Veeam-SU1-DFC on storage DFC-ddxxx was not found.

Code: Select all

Simultaneously, the following error appears in the Windows Event Viewer:
Log Name:      Application
Source:        Application Error
Date:          05/04/2018 16:16:20
Event ID:      1000
Task Category: (100)
Level:         Error
Keywords:      Classic
User:          N/A
Description:
Faulting application name: VeeamDeploymentSvc.exe, version: 9.5.0.1536, time stamp: 0x5a31fa33
Faulting module name: libDDBoost.dll, version: 3.1.0.1, time stamp: 0x55309e5b
Exception code: 0xc0000005
Fault offset: 0x000d89cd
Faulting process id: 0x2ea8
Faulting application start time: 0x01d3cce86ff2b8f2
Faulting application path: C:\Windows\Veeam\Backup and Replication\VeeamDeploymentSvc.exe
Faulting module path: C:\Program Files (x86)\Veeam\Backup Transport\x86\ddboost\libDDBoost.dll
Report Id: e9151ece-38db-11e8-80e0-001b2197322d

When the known error occurs, the Veeam Installer Service turns off.

These are the workarounds that I have also applied through the Veeam Support - Case # 02659087:
- Upgrade DD OS Version from 5.7 to 6.0 (I still can not update to the last 6.1 because I have other systems that do not fall into the combatability matrix. I have an update plan that I will complete within the next 10 days.)
- I've created new storage units with new credentials.
- I applied a private fix that gave me Veeam support.
- I've created new backup chains, new jobs, cloned jobs, etc.
- I have a second twin Data Domain on which I write Backup Copy but with the same problem.
- Several restarts and server backup / server gateway services.
- IP storage units also fail.

Here is the scenario:
- A single physical server backup with all Veeam components (192 GB RAM, 2 socket/12 cores, Windows Server 2012 R2 full patched)
- Proxy with Direct SAN Access
- Data Domain Integration with DFC
- Veeam Backup & Replication v9.5 U3

One thing is certain, these anomalies have started since I updated to Update 3.
Please help me, I'm in serious trouble.

Thanks so much!

[nielsengelen]

Best would be to handle this via your support ticket as not every setup and config is the same.