Seaquel
SQL Server error code

SQL Server error 5269

SQL Server raises error 5269 at severity 16, which marks a problem with the query or data that you can correct.

Check terminated. The transient database snapshot for database '%.*ls' (database ID %d) has been marked suspect due to an IO operation failure. Refer to the SQL Server error log for details.
Msg5269
Severity16
Group5000–5999

Source: Database Engine events and errors