FTP 220 Service Ready vs 452 Insufficient Storage
FTP 220 (Service Ready) is a 2xx Positive Completion response, while 452 (Insufficient Storage) is a 4xx Transient Negative response. 220 indicates that service ready for new user. This is the greeting message sent by the FTP server when a client first connects. In contrast, 452 means that requested action not taken. Insufficient storage space in system. The server ran out of disk space while processing the command.
Descrição
Service ready for new user. This is the greeting message sent by the FTP server when a client first connects.
Quando você o vê
Immediately upon connecting to an FTP server. This is the welcome banner confirming the server is accepting connections.
Como corrigir
No fix needed — the server is ready. Proceed with USER and PASS commands to authenticate.
Descrição
Requested action not taken. Insufficient storage space in system. The server ran out of disk space while processing the command.
Quando você o vê
When uploading a file and the server's disk is full, or when the user's storage quota has been exceeded.
Como corrigir
Free up disk space on the server or request a quota increase from the administrator. Delete unnecessary files and retry the upload.
Diferenças principais
220 is a 2xx Positive Completion response, while 452 is a 4xx Transient Negative response.
FTP 220: Service ready for new user. This is the greeting message sent by the FTP server when a client first connects.
FTP 452: Requested action not taken. Insufficient storage space in system. The server ran out of disk space while processing the command.
You encounter 220 when immediately upon connecting to an FTP server. This is the welcome banner confirming the server is accepting connections.
You encounter 452 when when uploading a file and the server's disk is full, or when the user's storage quota has been exceeded.
Quando usar qual
For 220 (Service Ready): No fix needed — the server is ready. Proceed with USER and PASS commands to authenticate. For 452 (Insufficient Storage): Free up disk space on the server or request a quota increase from the administrator. Delete unnecessary files and retry the upload.