Naming restrictions and conventions
Overview
Naming of resources across Azure can be inconsistent due to various limitations.
You will normally encounter restrictions to resources that use their name in DNS.
Notable naming restrictions
| Service | DNS Hostname | Char. limit | Scope | Restrictions | Additional restrictions |
|---|---|---|---|---|---|
| Azure SQL Server | Y | 63 | global | Lower-case letters, numbers, hyphens | No leading or trailing - |
| Azure SQL Database / Elastic Pool | Y | 63 | server | No control chars or <>*%&:\/? |
No trailing ' ' or ‘.’ |
| Storage Account | Y | 24 | global | Lower-case letters and numbers | |
| Row3 | |||||
| Row4 |
Storage restrictions
| Resource | DNS Hostname | Char. limit | Restrictions | Additional restrictions |
|---|---|---|---|---|
| Blob | N | 255 | Letters, numbers, hyphens, underscore | No consecutive -. Folder names 3 to 63 characters. |
| Storage | Y | 24 | Lower-case letters and numbers | |
| Row3 | ||||
| Row4 |