If volumes are deleted, the pack is re-created. Overview of Restore Phase Tasks At restore time, the requester performs the following steps: AddToSnapshotSet for each volume that can participate in shadow copies to add the volume to the shadow copy set.
DoSnapshotSet to create a volume shadow copy. System-critical components are marked as "not selectable for backup. Quick formatting is significantly faster than slow formatting also called full formatting. If the requester did not use ASR, it should replace the list of volumes.
It is important to note that during WinPE disaster recovery, ASR writer functionality is present, but no other writers are available, and the VSS service is not running. For example code that shows how vss writer service view these messages, see IVssComponentEx:: The component names use the following formats: If during the restore session the backup application detects that one or more volumes are changed or missing, the backup application should use ASR to perform the restore.
Thus, when restoring data, the requester must use volume GUID paths, not drive letters, to access the volumes. The number of plexes per volume must be unchanged. This component specifies the path of the directory that contains the BCD store. The ASR writer supports the following options: The writer session state memory is a limited resource, and writers must eventually reuse session states.
Under this value, your requester should create a volume GUID entry for each volume that has been restored. Overview of Backup Phase Tasks At backup time, the requester performs the following steps.
Note During backup, the requester should include all fixed disks. PreRestore to notify the ASR writer to prepare for a restore operation. For a dynamic disk to be intact, all of the conditions for a basic disk must be met. The requester must include all volumes that contain system-critical components reported by writers, such as the volumes that contain the Active Directory.
If a disk was not excluded during backup, it will be assigned during restore and can be re-created and reformatted. The number of volumes that are available in the physical pack during restore must be greater than or equal to the number of volumes that were specified in the ASR writer metadata during backup.
SetRestoreOptions with the "ExcludeDisk" option during restore.IF you are getting volume shadow copy service (VSS) error Unexpected error DeviceIoControl and on windows or windows server R2, then you hit the limit.
A VSS backup-and-recovery application that performs disaster recovery (also called bare-metal recovery) can use the Automated System Recovery (ASR) writer together with Windows Preinstallation Environment (Windows PE) to back up and restore critical volumes and other components of the bootable system state.
The backup application is implemented as a VSS .Download