This article applies to:

• Acronis Backup for VMware 9

Symptoms

1. You back up a virtual machine with a Windows 8 or Windows Server 2012 guest OS. The machine has volumes created using Storage Spaces.
2. You try to recover files from the VM backup.
3. The Storage Spaces Volumes appear to be empty and it is impossible to restore any files from them.

Cause

Issue in the product. Storage Spaces are backed up in sector-by-sector mode, therefore granular recovery is not possible.

Acronis Backup 11.5  fully supports Hyper-V generation 2 virtual machines starting with Update 6 (build 43909 or 43713 depending on the localization)

Hyper-V VMs on SMB3.0 shares backup is not supported

If the Hyper-V service is stopped, you will see the "Failed to Obtain an Instance of Service Class 'Msvm_Virtualsystemmanagementservice'" entries in Acronis logs. To fix this issue, you have to start the Hyper-V service manually on Hyper-V host

Acronis Files Connect (formerly ExtremeZ-IP) uses alternate data streams (ADS) for storing Mac specific data (resource forks). As it happens, Windows Server Deduplication will only dedup the primary data stream of a file, an ADS will not be deduped (see the linked Technet article, below). This may limit the benefits for files that are accessed from the Macs. It is also important to understand that in the OS X 10.7 and higher SMB client, Apple uses the same ADS formatting that is used by AFP with Acronis Files Connect.

Symptoms

1. You are backing up the entire machine or some files to any location (Cloud, local or network share).
2. You restore or download an individual file from the backup, the restore operation finishes successfully without errors or warning, however, the resulting file is corrupted and is zero size.

Cause

There is a known issue with backups of systems, where Windows native Data deduplication is enabled.

Issue will be addressed in future updates.

The “File Server VSS Agent Service” role service must be enabled on the file server hosting SMB3.0 share.

This article applies to:

Symptoms

Backup of a virtual machine performed by Agent for Hyper-V running on Windows Server 2012 R2 or lower, fails with "Operating system error: Another shadow copy creation is already in progress. Wait a few moments and try again." error.

Cause

The issue may happen when