Space requirements for reconciliation
Reconciliation uses Windows™ Volume Shadow Copy Service (VSS ) to scan a volume. In addition to the VSS snapshot, VSS requires free disk space for the reconciled volume.
VSS requires space on the volume that is reconciled even if a snapshot is stored on another volume. VSS requires 200 KB of free disk space as a base requirement. Additionally, approximately 10 MB of disk space is required for every 100,000 objects on the reconciled file system.
VSS requires space for a snapshot. The snapshot can be on the reconciled volume or on another volume. Use the vssadmin add shadowstorage command to specify the volume for the snapshot. For information about the vssadmin add shadowstorage command, see Vssadmin add shadowstorage at the Microsoft™ technical notes library: technet.microsoft.com.