HPE 7.68TB SATA RI SFF BC MV SSD - P40501-B21

HPE P40501-B21 7.68TB Enterprise SATA SSD

Overview

The HPE P40501-B21 is a 7.68TB SATA solid-state drive engineered for high-throughput enterprise environments where sustained random-access performance and reliability matter. Rated for 67,000 random read IOPS (scaling to 76,000 at queue depth 32), this drive delivers the kind of predictable, low-latency performance required in surveillance recording systems, data centers, and batch-processing workloads that can't tolerate the variance of mechanical spinning drives.

Built as a small-form-factor (SFF) 2.5-inch drive with a 7mm height, the P40501-B21 integrates into dense server blade chassis and storage arrays without modification. Its hot-pluggable design means you can swap failed or aging drives without powering down the host system—critical when 24/7 uptime is non-negotiable. The 6 Gb/s SATA interface is mature, well-understood in every data center, and requires no special host controller support.

Key Features

• 67,000 random read IOPS: Handles concurrent multi-stream workloads (security camera feeds, log aggregation, database queries) without queuing bottlenecks. At queue depth 32, the drive reaches 76,000 IOPS—enough headroom for bursty access patterns in surveillance systems scanning archive footage or running analytics jobs.
• 11,500 random write IOPS (11,800 at Q64): Write performance is tuned for sustained transactional load rather than peak throughput, typical of surveillance recorders and journaling file systems. This prevents write-back cache overflow during sustained 24/7 recording across multiple camera streams.
• 7mm low-profile form factor: Fits blade servers, compact storage arrays, and SAN shelves with height constraints. A full-height (15mm) drive would force you to use fewer drives per enclosure or upgrade the chassis entirely—this saves capital and racking overhead.
• Hot-pluggable design: No power cycle required for drive replacement. In a surveillance system or live trading platform, hot-swap capability eliminates the downtime risk and complexity of coordinated maintenance windows.
• 6 Gb/s SATA interface: Supported natively by every server and storage controller from the past 15 years. No driver issues, no firmware quirks, no vendor lock-in. Integration is straightforward across heterogeneous environments.
• 0.5 kg (1.1 lb) per unit: Minimal weight per TB—important when filling dense multi-bay enclosures or blade chassis where every kilogram of power draw and thermal load compounds across 100+ drives.

Integration & Compatibility

The P40501-B21 (often searched as P40501 B21) works in any system that accepts 2.5-inch 6 Gb/s SATA drives. Surveillance NVRs, enterprise servers, SAN storage arrays, and disk-based backup appliances all integrate without modification. RAID controllers—hardware or software—treat this drive like any standard SATA SSD, with no special firmware or controller updates required.

In surveillance-specific deployments, pair the P40501-B21 with NVR platforms that support SATA hot-swap (most commercial and mid-range models do). The drive's sustained write performance and queue-depth headroom are well-suited to continuous archival workloads where multiple camera streams write to the same logical volume.

For data center use, this drive is a drop-in replacement for older 7.2k RPM mechanical drives in legacy storage shelves, offering 10–50x the random IOPS with no cooling or vibration penalty.

What's in the Box

The P40501-B21 ships as a bare drive only. No cables, brackets, or mounting hardware are included. Mounting brackets and SATA cables (if needed) must be sourced separately based on your chassis or enclosure design.

Frequently Asked Questions

Q: Is the P40501-B21 compatible with my surveillance NVR?

A: Yes, if your NVR accepts 2.5-inch SATA SSDs or HDDs. Check the drive bay specification in your NVR manual—it will list acceptable form factors (2.5-inch SFF) and interface type (SATA 6 Gb/s). The P40501-B21 meets both. No special drivers or firmware updates are required.

Q: What's the warranty on the P40501-B21?

A: Refer to HPE's current limited warranty terms, typically available from your distributor or HPE support. Warranty duration depends on the purchase channel and region.

Q: Can I use the P40501-B21 in a RAID configuration?

A: Yes. The drive is compatible with standard RAID controllers (hardware or software), RAID 0, 1, 5, 6, and 10. Hot-swap capability means you can replace a failed drive without stopping the RAID rebuild or taking the array offline.

Q: What's the typical lifespan in a 24/7 surveillance environment?

A: SSD lifespan is measured in write cycles, not runtime hours. Enterprise SSDs like the P40501-B21 are rated for high write endurance. For continuous surveillance recording at moderate bitrates (H.265 streaming), expect 3–5+ years of service life. Consult HPE datasheets for precise DWPD (Drive Writes Per Day) or TBW (Total Bytes Written) ratings for your use case.

Q: Do I need to replace the mounting brackets or cables from my old drive?

A: Mounting brackets and SATA cables are reusable if they fit the 2.5-inch form factor and are in good condition. The P40501-B21 uses the standard 7-pin SATA connector and 15-pin power connector—same as any other 2.5-inch SATA drive.

Q: What are the operating temperature limits?

A: Refer to the HPE P40501-B21 datasheet for exact thermal specifications. Most enterprise SSDs operate safely from 0°C to 60°C under normal conditions. Higher ambient temperatures in non-climate-controlled facilities may require active cooling or derating of write workload.

Marty Allison

I've deployed the HPE P40501-B21 in three-tier surveillance backends where NVRs feed hot storage, and I've watched the performance curve flatten at sustained write loads. The 67,000 random read IOPS spec is honest—you'll see it under queue depth 32, which matters when your archive system is simultaneously replaying footage for forensics while two new camera streams are writing. That's the real-world win here.

Technical Highlights:

• 67,000 random read IOPS scaling to 76,000 @ Q32: Enough headroom that your NVR won't stall when retrieving footage while live recording. Mechanical drives top out around 300 IOPS; this is 220x faster. In a multi-stream playback scenario (four simultaneous recordings being reviewed), the difference between a 300 IOPS drive and 67,000 IOPS is the difference between a 3-second stall and no stall at all.
• 11,500 random write IOPS: Tuned for surveillance workload variance, not peak synthetic numbers. When your H.265-compressed camera streams hit a traffic jam and the bitrate spikes, you're not going to back up the write queue. This is the spec that keeps your recorder from dropping frames.
• 7mm form factor with hot-pluggable design: Means you can stuff 16 of these into a 2U blade chassis without overheating, and swap a failing drive at 3 AM without waking the boss. In my experience, this cuts MTTR (mean time to recovery) from 45 minutes to 5 minutes.

Deployment Considerations:

• 6 Gb/s SATA is a mature interface, but if your storage controller is reporting link errors or slowdowns, check cable length and connector seating first—cheap SATA cables will ghost you. I've seen people blame the drive when it was a 6-inch cable that got kinked during installation.
• In cold-start scenarios (powering on a full NVR rack), the P40501-B21 draws current like any SSD, but simultaneous power-on of 50+ drives can exceed PSU capability. Stagger startup or verify your power budget; this is a gotcha that catches integrators who skip the math.

Size this drive for continuous archive workloads where you're trading dollars per TB against uptime risk. Pair it with RAID 6 in a surveillance hot-storage tier, and you're buying predictable, low-latency performance without the thermal and power overhead of mechanical alternatives. Not a generic choice—it's a systems engineering decision.