You must have a functional FBWC module (typically 1GB or 2GB) installed on the P420i controller. SmartCache and advanced RAID features cannot function without a cache capacitor/battery backup.
This article cuts through the confusion. We will explain exactly what the P420i license is, which features require it, how to obtain a legitimate new key, and the modern alternatives that exist in 2025.
: Drive Erase, Advanced Capacity Expansion, and Online Mirror Splitting. How to Get a License Key Smart Array P410i License Key 12 - Google Groups
Boot your server and press to enter Intelligent Provisioning, or launch the HP Smart Storage Administrator from within your OS (Windows/Linux). hp smart array p420i license key new
Adds dual-parity protection, allowing your array to survive the simultaneous failure of two hard drives without data loss.
There are two primary methods to apply a new license key to your P420i controller: using the graphical smart storage administrator during boot or using the command-line interface within an operating system. Method 1: Using HPE Smart Storage Administrator (SSA)
Because HP ProLiant Gen8 servers and the P420i controller are legacy products, Hewlett Packard Enterprise (HPE) has transitioned support and licensing structures over time. You must have a functional FBWC module (typically
HP Smart Array Advanced Pack Evaluation License Key · GitHub
If you cannot find a new or legitimate P420i license key, you have a superior hardware option.
Without the license, the P420i is essentially a very expensive mirroring controller. You cannot create a RAID 5 volume without the key. We will explain exactly what the P420i license
Once you have purchased a license, you will receive an either physically in a "License Documents Enclosed" envelope or via email from HP Electronic Delivery. This certificate will contain your Entitlement Order Number (EON) . You must then follow the official process:
The HP Smart Array P420i is an integrated 6Gb/s SAS/SATA RAID controller built into 8th-generation (Gen8) HPE ProLiant servers, such as the popular DL360p and DL380p Gen8. While the hardware offers robust baseline performance, unlocking its advanced storage tiers, faster caching optimization, and high-level RAID configurations historically required a specific activation license.
Select from the tool menu.
Run the following command to check current licenses: ssacli slot=0 licensekey show