What's the ESN format of server
An Equipment Serial Number (ESN) is a string that uniquely identifies a server. An ESN is required when you apply for technical support to Huawei.
As the ESN format by using the example 2102310QPD10F3001263
1 Indicates the ESN ID (two digits).
2 Indicates the material identification code (8 characters).
3 Indicates the vendor code (two characters).
4 Indicates the year and month (two characters).
5 Indicates the serial number (six digits).