| Previous | Next |
| ERROR_FT_READ_RECOVERY_FROM_BACKUP | ERROR_IMAGE_MACHINE_TYPE_MISMATCH |
ERROR_FT_WRITE_RECOVERY
What ERROR_FT_WRITE_RECOVERY means
A fault-tolerant volume completed a write using redundancy after a member or area failed. In practical terms, this status belongs to redundant storage writes: the file system preserves the write through another copy while reporting degraded storage behavior.
Typical causes
- One member of a mirrored set rejected the write
- The device could not reassign the failing area
- The volume is operating in a degraded but still writable state
How to investigate
- Collect storage, controller, and disk event logs
- Confirm redundancy state and whether resynchronization is running
- Validate that recent backups are usable before replacing hardware
Developer guidance
A successful write does not eliminate risk: redundancy may now be reduced. Capacity planning and hardware replacement should occur before another member fails.
Operational interpretation
When ERROR_FT_WRITE_RECOVERY appears, first determine whether the operation actually failed, completed with an informational condition, or transferred work to another component. Record the API name, returned value, affected process or object, and the immediately preceding event. For this code, the most useful boundary is the redundant storage writes boundary; broad machine-wide remediation before that boundary is identified can hide the original evidence.
Example scenario
An incident begins when one member of a mirrored set rejected the write. A responder investigating this result should not begin with a generic reboot that destroys the original context. A better first step is to collect storage, controller, and disk event logs. That evidence connects it to its producing operation and reveals whether this particular result is repeatable, expected, or merely secondary.
Logging and telemetry
Telemetry for this Win32 error should preserve its numeric value, component version, process and thread identifiers, operation name, affected object or endpoint, elapsed time, and the first earlier failure in the same activity. Keep the result correlation identifier stable across callbacks so the status can be joined to the request that initiated this exact operation.
Recovery and validation
Apply recovery only after the responsible state has demonstrably changed. After changing that state, repeat one controlled this result scenario and verify both the returned status and the resulting system state. Absence of another log line is not sufficient: confirm that the intended redundant storage writes action completed, that no resource remains pending, and that later cleanup does not produce a different secondary error.
References
Looking for a different code? Search another status or error code.