HPE 804405-B21 - HPE Smart Array P408e-p SR Gen10 Controller

Brand: HPE | Category: Accessories & Components

SKU: HPE-804405-B21 | Part #: 804405-B21 | MPN: 804405-B21

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Storage I/O performance in modern data centres lives or dies at the controller level. The HPE 804405-B21 Smart Array P408e-p SR Gen10 Controller is the piece that sits between your server's compute fabric and external storage arrays, making the critical difference between bottlenecked throughput and predictable performance under load. This is a PCIe 3.0 x8 external RAID controller purpose-built for HPE ProLiant Gen10 servers that need to push sustained data movement to high-density storage enclosures without consuming internal controller resources. For storage architects and enterprise infrastructure teams managing shared storage pools across multiple hosts, this controller becomes the foundation of reliable, scalable SAN architectures in the GCC and Asia-Pacific regions.

The 804405-B21 uses dual Mini-SAS HD (SFF-8644) external ports running at 12Gb/s SAS, allowing you to connect directly to HPE D3000, D6000, or D8000 series enclosures without middleware. That dual-port design matters in practice: it gives you path redundancy and the ability to load-balance I/O across two independent SAS fabrics. The controller itself carries 2GB of Flash-Backed Write Cache (FBWC), which absorbs write bursts and smooths the impact of latency-sensitive workloads. Unlike volatile DRAM-only caches, HPE's flash-backed approach survives power loss, meaning your write-back guarantees hold even during ungraceful shutdowns. In production environments running databases, enterprise resource planning systems, or virtualized workloads, that distinction prevents data loss scenarios and simplifies post-incident recovery procedures.

Operationally, this controller supports the full complement of RAID levels your storage architect needs: 0, 1, 5, 6, 10, 50, and 60. That flexibility means you're not forced into a one-size-fits-all approach. You can tier your storage intelligently—RAID 5 or 6 for general-purpose capacity, RAID 10 for transaction-heavy databases, RAID 0 for temporary scratch space. The 804405-B21 can orchestrate up to 256 physical drives across connected enclosures, scaling your external storage footprint far beyond what internal drive bays allow. This capability makes the controller essential for organizations expanding into hyperscale AI labs or dense analytics clusters, where a single Gen10 server might manage petabytes of external storage.

Management integration is where HPE designed this controller for environments that cannot tolerate manual firmware updates or ad-hoc administration. The 804405-B21 integrates with HPE iLO (the lights-out management interface), HPE OneView (for multi-server orchestration), and Smart Storage Administrator for granular RAID policy configuration. All of this works without requiring agent software on the host OS—HPE Integrated Management Log handles health telemetry and event reporting through the management channel. Storage engineers at large enterprises can monitor controller temperature, cache hit rates, and drive predictive failures from a single pane of glass. SmartPath technology is also supported, a feature that lets SSDs connected to this controller bypass the RAID stack for direct I/O when latency matters most, improving NVMe SSD performance without sacrificing reliability features on the rest of your array.

The controller's low-profile PCIe form factor means it fits into dense blade and rack servers without blocking adjacent slots. HPE ProLiant DL, ML, and BL series Gen10 platforms recognize it immediately via firmware auto-discovery, requiring minimal configuration overhead. Supported operating systems span Windows Server, Red Hat Enterprise Linux, SUSE Linux Enterprise, and VMware vSphere, making the 804405-B21 compatible with virtually every enterprise hypervisor and operating system combination deployed in modern data centres across the Middle East and Asia. Whether your use case is disaster recovery replication, high-frequency trading infrastructure, or collaborative analytics workloads, this controller provides the I/O muscle needed to move large datasets reliably and efficiently.

Controller Specifications & Connectivity

• PCIe 3.0 x8 host interface with dual Mini-SAS HD external ports supporting 12Gb/s SAS connectivity
• 2GB Flash-Backed Write Cache (FBWC) with power-loss protection for reliable write-back guarantees
• RAID 0, 1, 5, 6, 10, 50, 60 support with capacity to manage up to 256 physical drives across external enclosures
• Compatible with HPE D3000, D6000, and D8000 series external arrays; direct integration with HPE iLO, OneView, and Smart Storage Administrator
• SmartPath technology enabled for SSD direct-I/O optimization and agentless management via HPE Integrated Management Log
• Supports SAS HDD, SAS SSD, and Nearline SAS drives; certified for Windows Server, RHEL, SLES, and VMware vSphere environments
• HPE ProLiant Gen10 (DL, ML, BL series) deployment; low-profile form factor for space-constrained enclosures

Omnixon Global stocks the HPE 804405-B21 as part of our core HPE controller and adapter portfolio across the UAE, Qatar, Bahrain, and wider Asia-Pacific distribution footprint. If you are scoping external storage controllers for a new data centre deployment, hyperscale lab refresh, or enterprise infrastructure upgrade, we can provide technical specifications, competitive configuration guidance, and rapid delivery to your loading dock. Contact our solutions team with your requirements—part number 804405-B21, application context, and timeline—and we will prepare a formal RFQ with lead times and logistics details.