FTP 220 Service Ready vs 552 Exceeded Storage Allocation
FTP 220 (Service Ready) is a 2xx Positive Completion response, while 552 (Exceeded Storage Allocation) is a 5xx Permanent 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, 552 means that requested file action aborted. Exceeded storage allocation for the current directory or dataset. The user's quota has been reached.
描述
Service ready for new user. This is the greeting message sent by the FTP server when a client first connects.
何时出现
Immediately upon connecting to an FTP server. This is the welcome banner confirming the server is accepting connections.
如何修复
No fix needed — the server is ready. Proceed with USER and PASS commands to authenticate.
描述
Requested file action aborted. Exceeded storage allocation for the current directory or dataset. The user's quota has been reached.
何时出现
When uploading a file that would exceed your disk quota or the directory's storage limit configured by the server administrator.
如何修复
Delete unnecessary files to free up quota, or request a quota increase from the server administrator.
主要区别
220 is a 2xx Positive Completion response, while 552 is a 5xx Permanent 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 552: Requested file action aborted. Exceeded storage allocation for the current directory or dataset. The user's quota has been reached.
You encounter 220 when immediately upon connecting to an FTP server. This is the welcome banner confirming the server is accepting connections.
You encounter 552 when when uploading a file that would exceed your disk quota or the directory's storage limit configured by the server administrator.
何时使用哪个
For 220 (Service Ready): No fix needed — the server is ready. Proceed with USER and PASS commands to authenticate. For 552 (Exceeded Storage Allocation): Delete unnecessary files to free up quota, or request a quota increase from the server administrator.