HPE P49056-B21 6.4TB SAS Mixed-Use Solid State Drive

Overview

The HPE P49056-B21 is a 6.4TB SAS solid state drive engineered for mixed-use workloads in surveillance systems, data centers, and enterprise storage arrays. This 2.5-inch form factor drive connects via 12Gbps SAS interface and delivers consistent random read and write performance (105,000 and 120,000 IOPS respectively) with sufficient headroom for sustained writes at 130,000 IOPS when queued at Q16. The P49056-B21 handles the read-heavy traffic typical of continuous surveillance playback alongside write bursts from live ingest without throttling or performance degradation.

Key Features

• 6.4TB Capacity: Stores roughly 30–40 days of 24/7 HD video from a single 4MP camera (depending on compression and bitrate), or handles mixed transactional and archival workloads on the same physical drive without partitioning constraints.
• 12Gbps SAS Interface: Full backward compatibility with existing SAS infrastructure (HBAs, expanders, enclosures rated for 6Gbps or 12Gbps); no PCIe-to-SAS adapter or riser cards required, reducing deployment complexity.
• 105,000 Random Read IOPS / 173,000 Max Read IOPS (Q64): Handles parallel surveillance playback and forensic review across dozens of camera streams simultaneously without seek latency becoming a bottleneck — critical for multi-camera lookback in a single NVR session.
• 120,000 Random Write IOPS / 130,000 Max Write IOPS (Q16): Absorbs simultaneous ingest from multiple high-bitrate cameras without write queue backup; maintains consistent frame delivery even during disk-intensive forensic operations in the background.
• 3 DWPD (Drive Writes Per Day): Rated for up to 3 full drive rewrites daily across the 3-year warranty period — translates to approximately 7TB written per day on the P49056-B21. Surveillance and mixed-use workloads rarely exceed 1–2 DWPD, so endurance headroom is substantial and warranty lifespan is protected against premature wear-out.
• 9.82W Typical Power Draw: Low power envelope reduces thermal load in dense JBOD or NVR chassis, minimizes cooling overhead, and keeps redundant power supply sizing conservative — especially important in 19-inch rack deployments where every watt counts toward PSU capacity planning.
• Hot-Pluggable Design: Replace or upgrade drives without powering down the system; minimal service window for array reconfiguration, re-mirroring, or capacity expansion in production surveillance environments.
• 15mm Height Form Factor: Standard 2.5-inch SAS profile fits familiar enterprise trays, brackets, and enclosures — no proprietary form-factor adapters; drop-in replacement for legacy SAS drives in existing infrastructure.

Integration & Compatibility

The P49056-B21 integrates into any SAS-based storage controller, RAID card, or NVR backplane rated for 6Gbps or 12Gbps SAS. Common deployment patterns include direct attachment to HPE Smart HBA controllers, Adaptec RAID adapters, or passive SAS expanders in multi-bay NVR systems. RAID configurations (RAID 5, 6, or 10) are supported at the controller level; no firmware updates or special drivers are required beyond standard SAS driver stacks included in Linux, Windows Server, or embedded NVR OS distributions. Firmware is factory-sealed; no user-accessible updates are published.

What's in the Box

Each P49056-B21 ships as a bare drive without additional accessories. Mounting brackets, SAS cables, and drive trays are purchased separately and selected based on your target chassis or enclosure model.

Frequently Asked Questions

Q: Is the P49056-B21 suitable for 24/7 surveillance recording?

A: Yes. The 3 DWPD endurance rating and mixed-use design handle continuous ingest and playback workloads. In a typical surveillance context (1–2 DWPD), the drive will outlast its 3-year warranty period. Pair it with RAID 5 or 6 for redundancy.

Q: What is the warranty on the P49056-B21?

A: 3-year manufacturer warranty covers defects in material and workmanship.

Q: Can I use the P49056-B21 in a SAS enclosure with older 6Gbps controllers?

A: Yes. The P49056-B21 is backward compatible with 6Gbps SAS infrastructure. Performance will be limited by the controller speed, not the drive.

Q: What power supply size should I plan for with multiple P49056-B21 drives?

A: Each drive draws approximately 9.82W in normal operation. A standard 19-inch rack PSU (750W–1200W) can accommodate 8–12 drives plus controller and networking overhead. Consult your NVR or server documentation for exact requirements.

Q: How does the 173,000 max read IOPS (Q64) benefit surveillance playback?

A: High queue-depth read performance allows dozens of simultaneous camera playback streams or rapid forensic scrubbing without stalling. In practice, this means faster forensic review and reduced wait times during multi-stream lookback operations.

Jerry Tildsen

I evaluate storage for surveillance arrays and mixed-use NVRs regularly, and the P49056-B21 lands in the sweet spot for mid-tier deployments. The 6.4TB capacity paired with 105,000 random read IOPS means you get enough storage headroom to avoid undersizing early, while the 3 DWPD endurance rating keeps replacement costs predictable across a three-year refresh cycle. Most surveillance workloads run 1–1.5 DWPD, so you're sitting well inside the safe zone.

Technical Highlights:

• 173,000 Max Read IOPS at Q64: Multi-stream camera playback and forensic review don't stall on seek latency. You can pull 20+ simultaneous HD streams or rapid scrub a week of footage without the drive becoming the bottleneck — that headroom eliminates a lot of finger-pointing during incident response.
• 130,000 Max Write IOPS at Q16: Live ingest from bandwidth-heavy cameras (multi-bitrate, high-resolution) doesn't back up in the write queue. Pairs well with RAID 5/6 arrays where parity writes add overhead; the reserve performance keeps your frame delivery consistent.
• 9.82W Power Envelope: In a 10-drive JBOD, you're under 100W total — keeps cooling costs down and leaves PSU headroom for controllers and networking. Compare that to higher-wattage enterprise drives, and the density advantage is real on the power bill.

Deployment Considerations:

• The 3 DWPD rating is conservative for surveillance but generous for transactional workloads; if your NVR is also handling database replication or ETL jobs alongside recording, you may exceed the endurance window. Monitor actual DWPD in operation and plan refresh cycles accordingly.
• 12Gbps SAS is standard now, but confirm your controller and backplane support it — older HPE Smart HBA H240 cards cap out at 6Gbps. You'll still get backward compatibility, but you lose the performance headroom and invade the Q-depth sooner under concurrent load.

The P49056-B21 shines in distributed NVR arrays where you need reliable, predictable performance across 24/7 recording without oversizing storage or burning through warranty cycles. If you're building a multi-site surveillance infrastructure with standardized drive specifications, this is the drive I'd specify — good endurance margin, solid IOPS, and no surprises in the field.