We're planning to create hostnames from device serial numbers. Dell service tags, HP serial numbers, and Lenovo serial numbers fit within our naming convention, but Microsoft Surface serial numbers are usually 12–14 characters long.
We currently have Surface 3 and Surface 4 devices. Their serial numbers often begin with 0B33, while Surface Go 3 devices seem to end in 33F and Go 4 devices in 3GX. Because our hostname format has a 15-character limit, including a company prefix, we may need to shorten the Microsoft serial numbers.
Is there a reliable convention for determining which characters can be removed, or is there a better identifier to use for hostnames across Dell, HP, Lenovo, and Microsoft devices?
4 Answers
I’d avoid trimming the serial number unless you have a documented, collision-proof rule. A shortened serial may not stay unique across different models or generations. If the hostname system allows it, keep the full value and adjust the naming format instead.
If you need a hardware-derived identifier that is consistent across vendors, consider using a MAC address or another inventory-generated identifier. Just remember that network adapters can be replaced, so it may be less stable than an assigned asset tag.
For Dell systems, the service tag is generally the cleanest identifier to use. For the other vendors, I’d still favor asset tags or an internal device ID rather than guessing which characters of a Microsoft serial number are safe to remove.
An asset tag is usually a better choice for naming. It works across vendors, is easier to match with your inventory system, and can be structured to fit the hostname limit without relying on vendor-specific serial-number formats.
The limitation is that the hostname can only contain 15 characters, and our company prefix uses part of that space. That’s why shortening the identifier came up in the first place.