However, many users soon encounter a frustrating roadblock: . When you log into the HP Smart Storage Administrator (SSA) or iLO, you might see ominous messages like “Evaluation Period Expired” or “Feature requires license key.”

and are building a system today: Do not buy one. The cost of a license (often $100+) significantly exceeds the cost of replacing the controller ($30 for a P420 standalone card, which also requires a license... or $50 for a used P440 which does not). Use the money to upgrade your hardware to Gen9 or switch to a software-defined storage model.

A: No. Installing or removing a license does not touch your existing logical drives or data. It only changes available features upon reboot.

(via purchase or old asset), install it using the ssacli method and your server will run RAID 5 perfectly for another 5 years as a backup or auxiliary server.

Ultimately, understanding the licensing quirk will save you hours of confusion. The P420i is a great controller—just be prepared to pay the ransom for parity, or bypass it entirely. Q: Is there a free open-source driver to bypass the license? A: No. The ProLiant drivers (hpsa/hpsa-linux) are proprietary. The license check is hardcoded into the controller's onboard ROM. You cannot hack it.

This article dives deep into everything you need to know about the —what it is, why you need it, where to find it, and the best strategies for managing it in 2025 and beyond. What is the HP Smart Array P420i? Before discussing licenses, it is crucial to understand the hardware. The P420i is an integrated (hence the "i" suffix) SAS RAID controller. Unlike its add-on card cousin (P420), the P420i is built into the motherboard.

For IT administrators managing legacy HP ProLiant Gen8 servers, the HP Smart Array P420i is a familiar workhorse. Embedded directly on the system board of many DL360p, DL380p, and ML350p servers, this RAID controller offers a robust balance of performance and reliability.