Exchange GRT restore - Unable to open the item Database - skipped.

Are the CAS servers virtual? This can happen when the Exchange CAS role is installed on a VM.

Also, redirect restore to the CAS server will fail if the data is on tape, however if the data is on disk, it should work (it will not when the CAS role is installed on a VM).

So if CAS is not a virtual machine then a redirect restore to the CAS server from disk can be tried as a workaround. Is the data on tape or on disk? If on tape is there a possibility that it can be duplicated to disk storage and then redirect restored from there?

Thank Ananya,

Mailbox servers are physical (DAG), and CAS servers (NLB) are virtual (VMware virtual machines)

Restoring to its original location fails and also redirecting  to CAS server fails.

The Backup Exec server is an BE appliance, and the backup is stored on dedup disk.

Before installing Exchange Management tools manually to the BE appliance please run through the following tech document -"http://www.symantec.com/docs/TECH199583"otherwise Ops Center will not work.

Was redirection done to NLB name or physical name of CAS? The name should be whatever the output is for the command Get-ClientAccessServer in Powershell

Yes, please install Exchange Management tools. However, follow the article William Donigan provided first. 

Please log a support case for this, it looks like it will need indepth analysis

We've got the same problem here:

2010 Exchange with DAG and 2 virtual Exchange Servers (both with all rules) and a Citrix Load Balancer.

The backup runs fine but the recovery process won't work.

Auftrag beendet am Donnerstag, 17. Juli 2014 um 15:11:33
Abschlussstatus: Fehlgeschlagen
Endgültiger Fehler: 0xe00003bf - Kann eine oder mehrere E-Mail-Nachrichten nicht öffnen, da unbekannte Exchange-Web-Service-Fehler aufgetreten sind. Beachten Sie das Auftragsprotokoll wegen weiterer Informationen.
Endgültige Fehlerkategorie: Ressourcenfehler

Zusätzliche Informationen zu diesem Fehler finden Sie unter der Verknüpfung V-79-57344-959

Modifying the hosts-file did not solve the problem...

Any help would be nice:)

Excatly the same problem over here:

Exchange 2010 DAG - 1 active copy, 1 passive copy (2 HyperV VMs)

2 servers with CAS role  - NLB (2 HyperV VMs)

The backup with GRT works fine, but restore of an email fails:

Final error: 0xe00003bf - Cannot open one or more mail messages because of unknown Exchange Web Service errors. Review the job log for more information.

Final error category: Resource Errors

For additional information regarding this error refer to link V-79-57344-959

Errors 

Click an error below to locate it in the job log

V-79-57344-959 - Unable to open the item Database - skipped.

V-79-57344-959 - Unable to open the item Database - skipped.

V-79-57344-959 - Unable to open the item Database - skipped.

As Ananya Bhattacharya states this could be a problem that the CAS Server are VMs? I don't see a possible connection between virtualization and this error.

Ananya Bhattacharya proposed to open a suppot case. Has the case been opened and has someone finally figured out a solution or what the cause of the problem is? More than 6 Months now since first post.

MarcoFromBavaria: I am from Germany, too. Have you solved the problem?