HPE 872491-B21 - HPE 4TB SATA 7.2K LFF SC DS HDD

Brand: HPE | Category: Enterprise HDDs

SKU: HPE-872491-B21 | Part #: 872491-B21 | MPN: 872491-B21

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HPE's 872491-B21 is a 4TB nearline enterprise HDD engineered for 24/7 data centre operations where sustained throughput and reliability matter more than maximum performance. Operating at 7,200 RPM with a 512e sector size, this drive delivers the sequential I/O consistency that storage architects demand in secondary tiering and warm archive workloads. The annualised failure rate sits well within enterprise-grade tolerance for mid-capacity deployments, making the 872491-B21 a pragmatic choice for organisations building out capacity-focused storage pools across ProLiant infrastructure. The drive comes factory-sealed in HPE's SmartCarrier (SC) hot-plug tray, meaning it arrives ready to slot into LFF bays without additional carrier procurement or labour.

The 872491-B21 uses SATA 6Gb/s connectivity, which remains the standard interface for nearline and archive workloads in HPE's product stack. This is not a performance drive; it is built for environments where data access patterns are sequential, predictable, and time-insensitive. Storage architects and enterprise sysadmins select this model when designing tiered storage strategies—moving data that has already been read by production applications into a lower-cost, higher-capacity holding layer. The drive integrates directly with HPE Smart Array controllers that support SATA, and critically, it reports health metrics back to iLO, the out-of-band management interface that lets infrastructure teams monitor drive condition without logging into the operating system. This firmware-level health integration reduces unplanned downtime risk in large-scale deployments.

Security and firmware integrity are baked into the 872491-B21 through HPE's digitally signed (DS) firmware load. Any firmware update or drive assertion is cryptographically validated before execution, which aligns with compliance frameworks that mandate immutable audit trails for storage hardware. The drive operates across the full industrial temperature range (0°C to 60°C), accommodating both climate-controlled data centres and edge deployments where cooling may be marginal. The 3.5-inch large form factor remains the standard in rack-mounted storage arrays and direct-attached enclosures, offering maximum capacity density per U of rack space—a critical metric when total-cost-of-ownership calculations hinge on power and floor space.

HPE validates the 872491-B21 for use in ProLiant Gen9, Gen10, and Gen10 Plus servers with LFF bays. This generational flexibility means the part number does not require server refresh cycles to remain viable; organisations running stable infrastructure can add capacity without architectural migration. The hot-plug design eliminates the need to power down the host to replace a failed or decommissioned drive, a feature that directly translates to non-disruptive maintenance windows. For teams managing hybrid cloud or burst-capacity scenarios, the ability to add raw storage without scheduling downtime keeps the infrastructure elastic and responsive to demand.

Omnixon Global stocks the HPE 872491-B21 as part of our enterprise HDD portfolio serving data centres, AI labs, and hyperscale deployments across the UAE, GCC, and into Asia-Pacific markets. We hold factory-original inventory and can support high-volume orders, integration with your procurement systems, and direct delivery to your data centre dock. If you are planning a capacity expansion, refreshing an aging storage tier, or building out a new nearline array, we invite you to request a quotation. Contact our storage specialist team with your part number, order quantity, and delivery location, and we will provide lead times and logistics details tailored to your deployment timeline.

Performance Specifications

• Capacity: 4TB with 512e sector emulation for backward compatibility
• Rotational Speed: 7,200 RPM sustained for predictable sequential workloads
• Interface: SATA 6Gb/s, standard across HPE Smart Array SATA-capable controllers
• Form Factor: 3.5-inch LFF for maximum density in rack-mounted storage arrays
• Hot-Plug Ready: Includes HPE SmartCarrier (SC) tray for non-disruptive drive replacement
• Firmware Security: Digitally signed (DS) HPE firmware with cryptographic validation on all updates
• iLO Integration: Real-time health and performance reporting via HPE out-of-band management
• Operating Temperature Range: 0°C to 60°C, supporting data centre and edge environments