507 Insufficient Storage — Causes & Fix
HTTP 507 (Insufficient Storage) means the server cannot complete the request because it doesn't have enough storage space to do so (originally a WebDAV code).
- Applies to
- Any website or web server (HTTP standard)
- Time to fix
- 15 minutes – 2 hours
What it means
Causes include a full disk on the server, an exhausted storage quota, or a large upload the server can't store. This is a server-side (5xx) error defined in RFC 9110 (HTTP Semantics) — the request was valid, so the fix is on the server/origin side, not the visitor's.
Symptoms
- "507 Insufficient Storage"
- Uploads or writes fail; site errors under disk pressure
How to fix it
- 1
Free up storage (operator)
1. Check disk usage and free space; clear logs/temp files or expand storage.
- 2
Reduce the upload
1. As a user: a smaller upload may succeed if the server is near its limit.
Frequently asked questions
Is 507 a disk-full error?
Effectively, yes — the server lacks the storage to complete the request. The operator needs to free space or add capacity.
Last updated July 20, 2026
Guidance only — always consult a qualified professional or the official service manual before carrying out repairs.