HPE SAS Read Intensive Solid State Drives - 1.92TB SSD - SAS - 2.5IN - 24GBPS - - P49031-B21

HPE P49031-B21 SAS Read Intensive Solid State Drive

Overview

The HPE P49031-B21 is a 1.92TB SAS solid state drive built for read-intensive workloads in enterprise storage arrays, surveillance recording systems, and high-throughput data centers. The 24Gbps SAS interface and 150,000 random read IOPS deliver the throughput needed for sustained multi-stream recording or burst playback without controller bottlenecking. The 2.5-inch form factor fits standard server bays and storage enclosures; the 15mm height is slim enough for dense 1U configurations. Hot-pluggable design means you can swap failed drives without powering down the system—critical when uptime and continuous recording are non-negotiable.

At 1 DWPD (drive writes per day) endurance rating, this is optimized for read-heavy workloads where write volume stays moderate—typical of surveillance NVRs running H.265 compression or archival storage tiers where data changes infrequently. If your deployment relies on these characteristics, the P49031-B21 (often searched as P49031 B21) delivers the I/O performance and reliability curve you need.

Key Features

• 150,000 Random Read IOPS: Handles simultaneous playback requests and analytics queries without queue delays. In a 64-camera surveillance array with forensic review running parallel to live recording, this IOPS headroom prevents the stall that cripples slower drives.
• 24Gbps SAS Interface: Nearly 3 GB/s raw bandwidth per drive—enough to sustain multiple 4K streams or high-bitrate H.264 recordings without saturation. Direct benefit: no artificial bottleneck imposed by the storage fabric itself.
• 100,000 Random Write IOPS: Write performance remains brisk enough for sustained logging, alarm event capture, and metadata updates. The gap between read and write IOPS reflects the read-intensive tuning; if your workload demands balanced I/O, consider higher endurance variants in the HPE SSD catalog.
• 1.92TB Capacity: Real usable storage (not inflated by marketing); on a 4-drive RAID 6 array, you get roughly 3.8TB of protected capacity. Sizing for 30-day retention across 32 cameras depends heavily on resolution and frame rate—this capacity fits mid-scale deployments (typically 1MP–2MP continuous, or 4MP+ at reduced fps).
• Hot-Pluggable Design: Zero downtime for failed-drive replacement. The drive is recognized, ejected, and re-seated without OS intervention—invaluable in 24/7 recording systems where a reboot window is unacceptable.
• 13.66W Operating Power: Low thermal footprint compared to legacy 15k RPM SAS spindles. In a dense enclosure, this translates to reduced cooling load and more predictable power budgets when dimensioning PSUs for multi-drive arrays.

Integration & Compatibility

The P49031-B21 is a standard 2.5-inch SAS 24Gbps drive compatible with any enterprise storage controller or NVR platform that supports SAS SSDs. Verify your array's firmware and HBA support for NVMe-aware caching; most modern systems handle SAS SSD drives transparently once recognized. Hot-plug capability is hardware-dependent—confirm your chassis supports SATA/SAS hot swap. If your system uses older SAS 12Gbps HBAs, the drive will negotiate down to 12Gbps, cutting throughput in half; check controller generation before ordering larger quantities.

Surveillance-specific: NVRs using SAS SSD tiers (Hikvision, Dahua, Milestone with dedicated storage, or Bosch systems) benefit from the 24Gbps headroom when running intelligent video analysis or concurrent export jobs. The 1 DWPD rating is conservative for this use case—most surveillance recorders cycle the same logical volumes, keeping write rates well below the drive's endurance ceiling.

What's in the Box

The P49031-B21 ships as the drive unit only. No mounting bracket, tray, or cables are included—these are supplied separately as part of your storage enclosure or server configuration.

Frequently Asked Questions

Q: Is the P49031-B21 compatible with my HPE ProLiant DL380 Gen10 server?

A: Yes, provided the server is equipped with a SAS controller and available 2.5-inch bays. Confirm your HBA firmware version supports hot-plug operations. Most Gen10 and newer systems recognize SAS SSDs natively without additional drivers.

Q: What's the warranty on the P49031-B21?

A: HPE standard solid-state drive warranty applies—typically 5 years from date of purchase. Verify the specific terms with your reseller or HPE support documentation for your region.

Q: Can I use the P49031-B21 in a RAID 5 array with mechanical drives?

A: Technically yes, but it's not recommended. Mixing SSDs with spinning media in the same array creates performance asymmetry—the mechanical drives become the bottleneck, and you waste the SSD's IOPS capability. Dedicate this drive to an SSD-only tier or tiered storage pool.

Q: What happens if the drive fails in a hot-swap enclosure?

A: On most enterprise storage systems, the drive is automatically marked offline, and the array continues operating on remaining drives (assuming RAID protection). You can physically eject and replace the failed drive without downtime. Check your specific RAID controller's rebuild priority settings—aggressive rebuild aggressiveness may impact performance during replacement.

Q: Does the P49031-B21 support encryption?

A: The drive itself is a standard SAS SSD with no built-in encryption engine. Encryption is typically managed at the storage controller, filesystem, or application layer—common in enterprise arrays and NVRs that enforce FIPS or customer-managed key policies.

Q: Is 1 DWPD endurance adequate for my surveillance application?

A: For read-intensive workloads (playback, analytics, long-term archival), 1 DWPD is conservative and well-suited. If your application constantly rewrites large blocks (database-heavy analytics, frequent logs), calculate your actual write volume—compare drive endurance (TBW rating) against your anticipated monthly writes. Oversized endurance (3+ DWPD variants) is unnecessary and more expensive if your duty cycle is genuinely read-heavy.

Ted Perry

The HPE P49031-B21 sits in a narrow but important niche: read-intensive SAS storage for systems that need SSD speed without the cost and complexity of NVMe tiering. At 150,000 random read IOPS over a 24Gbps interface, this drive is purpose-built for surveillance NVRs and archival tiers running playback and forensic queries in parallel with live recording. The 1 DWPD endurance is the key differentiator—it tells you this is not a general-purpose enterprise drive, but specifically tuned for workloads where reads dominate.

Technical Highlights:

• 150k Read IOPS at 24Gbps: Sustained multi-user playback from a single drive without queue congestion. In a 64-camera NVR, running two operators pulling clips for evidence while live recording continues, this throughput headroom is the difference between responsive UI and 10-second query lag.
• 1 DWPD Endurance: Conservative write budget reflects the read-heavy duty cycle. Most surveillance recorders cycle the same logical volumes (ring-buffer recording), so you'll rarely approach the drive's annual write limit. Oversizing to 3+ DWPD adds 30–50% cost with zero benefit for your use case.
• Hot-Pluggable 2.5" Form Factor: At 15mm height, packs four drives into a standard 1U enclosure with room for redundancy. Zero-downtime replacement is critical when your recording system can't tolerate a reboot window.

Deployment Considerations:

• Verify your SAS controller negotiates 24Gbps cleanly; older Gen8/Gen9 systems may default to 12Gbps, cutting throughput in half. Firmware updates resolve this, but check before bulk order.
• The 1 DWPD rating is not a hard ceiling—drives often survive 2–3x rated writes—but if your forensic platform is logging analytics events at 100MB/day across all channels, tally that against the drive's annual TBW budget and add headroom for peace of mind.

Deploy the P49031-B21 in tiered storage architectures where NVRs, broadcast archive systems, or compliance vaults separate hot playback (SSD) from cold archival (mechanical spindle). The read IOPS and 24Gbps interface make this the right pick for legal hold, forensic export, and multi-operator concurrent review—not for write-intensive analytics engines or transactional databases.