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Backup‑to‑Disk (BMR) Restore Failure on IBM x3650 with UEFI Partitions Observed Issues The following symptoms are reported when attempting a Bare‑Metal Recovery (BMR) on an IBM System x3650 M3 that uses UEFI partitions: The restore process stops during the pre‑restore phase. An error message appears in the Avamar console: avvss Error <19530>: VSS PreRestore failed. Reason: Data of this type is not supported A pop‑up warning is displayed: "firmware mismatch between source (BIOS) and target (UEFI)" The BMR operation cannot be completed, and the restore job remains in a failed state.
Firmware Mismatch Leading to VSS Pre‑Restore Failure The BMR restore fails because the source system uses BIOS firmware while the target system is configured for UEFI. The VSS Pre‑Restore component detects this inconsistency and returns the error “Data of this type is not supported.” Key Contributing Factors The source machine’s hostinfo.xml reports a BIOS firmware type. The target machine reports a UEFI firmware type during the restore process. VSS logs contain the error code 19530 indicating an unsupported data type. A popup warns of a “firmware mismatch between source (BIOS) and target (UEFI).” Relevant Log Excerpts avvss Error <19530>: VSS PreRestore failed. Reason: Data of this type is not supported 2015/01/25-06:31:47.69099 [uvss_assist] IsUEFISystem: GetFirmwareEnvironmentVariable returned 998. is_uefi_system = TRUE 2015-01-24 22:31:47 avvss Info : Firmware type: UEFI 2015-01-24 22:31:47 avvss Info : Manufacturer: "IBM" Model: "System x3650 M3 -[7945AC1]-" Underlying Technical Reason VSS Pre‑Restore validates that the firmware environment of the source and target matches. A BIOS‑to‑UEFI transition is not supported, causing the “Data of this type is not supported” error. The mismatch prevents proper handling of disk signatures and boot configuration during the restore.
Ensure that the firmware type of the target machine matches that of the source machine. If the source system was configured to use BIOS (Legacy), the target system must also be configured for BIOS (Legacy). Likewise, UEFI must match UEFI. On Dell systems, this configuration can be verified and set by navigating to: Startup → UEFI/Legacy Boot → Legacy Only. Successful operation depends on matching the firmware type between the source and target systems ( BIOS ↔ BIOS or UEFI ↔ UEFI ).
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