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RAID Controller HPE Smart Array P431/4GB FBWC 12Gb 2-ports Ext SAS
The HPE Smart Array P431 Controller is a low‑profile PCIe 3.0 x8 SAS RAID controller designed for select HPE ProLiant Gen8 rack and tower servers. It supports 12 Gb/s SAS links, offers two external SAS ports and up to 200 drives per controller when expanded, and includes 4 GB Flash Backed Write Cache (FBWC) for improved data retention and write performance. The controller supports multiple RAID levels including RAID 1, RAID 6 (ADG), and RAID 60 (ADG), and is compatible with other HPE Smart Array controllers for simplified upgrades.
The P431 provides increased storage throughput and scalability for growing workloads, with support for an end‑to‑end 12 Gb/s SAS environment. Integrated 4 GB FBWC preserves data in the event of power loss and enables online RAID level migration and global online spare features to reduce downtime. Optional HP Secure Encryption protects data at rest when enabled. The controller also includes optimizations for SSD performance (HP SSD Smart Path) and predictive spare activation to speed rebuilds.
Install the P431 into a compatible HPE ProLiant Gen8 server on a free PCIe x8 slot and connect the external SAS cables to supported storage enclosures or disk backplanes. Configure RAID arrays through the HPE Smart Storage Administrator or the server ROM-based setup utility. If using FBWC, ensure the cache module and battery are properly seated to enable flash-backed caching. To enable optional HP Secure Encryption, install and configure the encryption key management according to HPE documentation.
For optimal performance, pair the P431 with compatible HPE ProLiant Gen8 servers and certified SAS drives or SSDs, keep firmware and drivers up to date, and follow HPE guidelines for cache backup battery maintenance and encryption key management.
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