ERROR_FT_WRITE_RECOVERY - 705 (0x2C1)
{Redundant Write} To satisfy a write request, the NT fault-tolerant file system successfully wrote a redundant copy of the information. This was done because the file system encountered a failure on a member of the fault-tolerant volume, but was not able to reassign the failing area of the device.
Updated: Feb 21, 2026
Technical Meaning
The ERROR_FT_WRITE_RECOVERY error code, with the numeric value 705 and hexadecimal representation 0x2C1, indicates that a redundant write operation was performed by the NT fault-tolerant file system. This action was taken because of a failure on one of the members of the fault-tolerant volume, but the file system could not reassign the failing area of the device.
Error Details
When this error occurs, it signifies that the file system encountered an issue with a member of the fault-tolerant volume. To ensure data integrity and availability, the file system wrote a redundant copy of the information to another member of the same fault-tolerant volume. This process is part of the fault-tolerant mechanism designed to protect against data loss in case of hardware failure.
Usage Context
This error code can be encountered during various operations that involve writing to a fault-tolerant volume, such as file creation, modification, or deletion. It is specific to environments where NTFS with fault tolerance (such as mirrored volumes) is enabled and configured.
Developer Interpretation
Developers should interpret this error as an indication of a successful redundant write operation due to a failure on one of the volume members. While this action ensures data integrity, it may impact performance or resource utilization. Developers are advised to monitor system logs for frequent occurrences of this error, which could indicate potential hardware issues that need addressing.
Related Errors
ERROR_VOLUME_CORRUPTION_DETECTED(52)ERROR_WRITE_FAULT(103)ERROR_REPARSE(368)
FAQ
Q: What does the ERROR_FT_WRITE_RECOVERY error mean?
A: This error indicates that a redundant write operation was performed by the NT fault-tolerant file system due to a failure on one of the members of the fault-tolerant volume.
Q: How can I prevent this error from occurring?
A: Regularly monitor and maintain hardware components, particularly those involved in fault-tolerant volumes. Replace faulty drives or upgrade storage systems as necessary to minimize the risk of such errors.
Summary
The ERROR_FT_WRITE_RECOVERY (705) is a specific file system error that occurs when the NT fault-tolerant file system writes redundant data due to a failure on one of its members. This action helps ensure data integrity but may impact performance and resource utilization. Developers should be aware of this behavior and take appropriate measures to maintain system health.