Uses SSDs to store "hot" data (frequently accessed files) for near-instant retrieval. The Bulk Storage:
Here’s what you should know:
HPE offers several licensing models depending on your deployment scale: License Type Description Option Part Number Single-Server (LTU)
: HPE Smart Array P420, P420i , P421, P440ar , P440, and P244br.
To summarize your search for :
Choose , input your alphanumeric key string, and click Activate .
Navigate back to the controller menu, click , and choose Create SmartCache .
Several important considerations can help avoid common pitfalls:
Yes. HPE provides a 90-day trial license for HP SmartCache. This is a great way to test performance improvements in your environment before making a financial commitment. When the trial expires, SmartCache volumes convert to Write-Through mode. Simply purchase and install a permanent license to restore full Write-Back capabilities. hp smartcache license key top
Select your primary Smart Array controller from the left-hand device tree. Click on and select Manage License Keys .
: A single activation key used for multiple servers, often delivered electronically. Pricing & Validity
Aim for a ratio where your SSD cache capacity represents roughly 10% to 20% of your frequently accessed hot data pool.
Before diving into the license, it is important to understand the technology. HPE SmartCache is a controller-based caching software feature that accelerates read-intensive applications. It allows you to use high-performance NVMe or SATA/SAS SSDs as a cache layer in front of your standard HDDs (or slower capacity SSDs). Uses SSDs to store "hot" data (frequently accessed
: You must have a minimum of a 1 GB Flash-Backed Write Cache installed on the controller. SmartCache will fail to activate on zero-memory or capacitor-less configurations.
: A minimum of 256 MB Flash-Backed Write Cache (FBWC) is required, though 1 GB or larger is recommended for modern workloads.
Keeps the majority of data on lower-cost HDDs, providing a cost-effective balance between speed and capacity. Metadata Management: Flash-Backed Write Cache (FBWC)
Before purchasing a license, it is crucial to ensure your hardware is compatible. HP SmartCache is supported across multiple generations of HPE ProLiant servers and Smart Array controllers. The table below summarizes the primary compatibility across major generations: Navigate back to the controller menu, click ,
Ensure your Smart Array controller has a flash-backed write cache (FBWC) module attached. SmartCache cannot function without a controller cache module.
One license is required for every server where the feature is deployed. A single server license can cover multiple Smart Array controllers within that same physical chassis, but it cannot be shared across different servers.