Backup fails with "Cannot continue backup. There is not enough free space on the drive where the snapshot cache file is located.". You can solve this issue by moving the destination for temporary file of snapshot.

Symptoms

During a backup operation, you receive an error similar to this:

Cannot continue backup.
There is not enough free space on the drive where the snapshot cache file is located.
Additional info:
--------------------
Error code: 1057
Module: 1
LineInfo: ca351978e667906a
Fields: $module : disk_bundle_vs
Message: Cannot continue backup. There is not enough free space on the drive where the snapshot cache file is located.
--------------------

Acronis Knowledge Base: http://kb.acronis.com/errorcode
Event-Code: 0x00010421

Cause

Acronis Backup & Recovery creates a temporary File during Snapshot. The file is a temporary container that receives all pending write operations until the backup creation completes.

The default relative size is 20% of the free partition space.

Solution

To resolve this issue, you have to move the destination for this temp file by following these instructions: Acronis Backup Creates a Temporary File During Snapshot.