MO003840RXUKK HPE 3.84TB SAS 12GBPS SFF BC Mixed Use SSD

 Overview of the HPE MO003840RXUKK 3.84TB SAS 12Gbps SSD

The HPE MO003840RXUKK 3.84TB SAS 12Gbps SFF (2.5-inch) Mixed Use Multi-Vendor BC SSD with Tray delivers powerful storage performance designed to meet the rigorous demands of enterprise environments. With its exceptional speed, durability, and hot-pluggable design, this solid-state drive is a reliable solution for high-performance servers and mission-critical applications.

Key Highlights of the HPE 3.84TB SAS SSD

• Manufacturer: Hewlett Packard Enterprise (HPE)
• Model Number: MO003840RXUKK
• Part Number: P40512-B21
• Use Case: Mixed Use (optimized for both read- and write-intensive operations)
• Flash Technology: Triple-Level Cell (TLC) NAND Flash
• Drive Height: 15mm
• Hot-Plug Capability: Supported for easy maintenance and upgrades

Technical Specifications and Performance

Engineered for speed and endurance, the HPE 3.84TB SAS SSD is a reliable choice for businesses requiring fast data access and consistent throughput. Below are its key performance metrics:

• Storage Capacity: 3.84TB
• Form Factor: 2.5-inch Small Form Factor (SFF)
• Interface Type: SAS 12Gbps
• Average Random Read Latency: 129µs
• Average Random Write Latency: 34µs
• Random Read IOPS: Up to 105,000
• Random Write IOPS: Up to 51,000
• Maximum Sequential Read Speed: 820 MiB/s
• Maximum Sequential Write Speed: 650 MiB/s

Advanced Flash Architecture

This model integrates TLC NAND flash technology, providing an exceptional balance between cost efficiency and performance. The drive’s mixed-use endurance allows it to handle diverse workloads, including database applications, virtualization, and high-volume transaction systems.

Reliability and Data Integrity Features

• Enhanced error correction and end-to-end data path protection
• Power loss protection to secure data during unexpected outages
• Optimized wear leveling and thermal monitoring for extended SSD lifespan
• High endurance for consistent write performance under mixed workloads

Hot-Pluggable and Easy Integration

The HPE MO003840RXUKK SSD features a hot-plug design, allowing for quick and safe installation or replacement without server downtime. This enables IT administrators to maintain uptime and improve service efficiency across data centers.

Form Factor and Build Quality

With a compact 2.5-inch form factor and 15mm height, this SSD fits seamlessly into a variety of HPE server bays. Its robust build ensures excellent heat dissipation and vibration resistance, maintaining optimal performance in dense server configurations.

Interface and Connectivity

The 12Gbps SAS interface ensures faster and more reliable data transfer rates compared to traditional SATA SSDs. This interface supports dual-port connectivity, enhancing redundancy and fault tolerance in enterprise storage environments.

Latency and IOPS Performance

• Read Latency: Approximately 129 microseconds, ensuring near-instantaneous data access
• Write Latency: Around 34 microseconds for responsive performance
• Read IOPS: Up to 105K, delivering excellent throughput for demanding workloads
• Write IOPS: Up to 51K, supporting efficient handling of high write volumes

Compatibility and Supported Platforms

The HPE MO003840RXUKK SSD is fully compatible with HPE ProLiant Gen10 Plus and Gen11 servers, ensuring smooth integration into existing IT infrastructures. It is optimized to work seamlessly with HPE Smart Array controllers for enhanced storage management and monitoring.

HPE MO003840RXUKK Overview of the 3.84TB SAS Mixed-Use SSD

The HPE MO003840RXUKK is a 3.84-terabyte enterprise solid-state drive engineered for mixed-use workloads in modern data centers. Packaged in a 2.5-inch (SFF) hot-swap form factor and using a 12 Gb/s SAS interface, this drive is optimized to deliver a balance of high sequential throughput and consistent random I/O performance required by business-critical applications, virtualization platforms, and scale-out storage arrays.

Key selling points and commercial positioning

• High usable capacity in a compact 2.5" form factor for dense server and storage arrays.
• 12 Gb/s SAS connectivity for enterprise-grade reliability and compatibility with HPE servers and controllers.
• Mixed-use endurance and performance profile for blended read/write workloads — ideal for databases, virtual machines, and medium-to-heavy transactional services.
• Bundled HPE carrier (Smart Carrier) for quick, vendor-friendly installation in HPE bays.

Technical specifications at a glance

The most consequential technical attributes that administrators and procurement teams evaluate are capacity, interface, endurance, throughput and I/O operations per second (IOPS). The MO003840RXUKK targets a sweet spot between cost and long-term durability.

Core drive specifications

• Capacity: 3.84 TB (raw usable capacity typical for enterprise SSD models).
• Interface: SAS 12 Gb/s (SFF 2.5" connector), enabling high-speed backplane integration.
• Form factor: 2.5-inch SFF, hot-swappable with HPE-compatible trays/carriers.
• NAND type: TLC (Triple-Level Cell) flash — designed for a balance of cost and endurance.
• Endurance / DWPD: Mixed-use endurance typically rated to support several DWPD (e.g., 3 DWPD class endurance), giving multi-year service life under standard enterprise write patterns.
• Performance (typical): Strong sequential throughput and high 4KB random I/O performance to meet VM and database demands.

Performance highlights (operational figures)

Administrators should expect enterprise-grade performance metrics such as:

• External transfer (peak) throughput in the ~1.0–1.2 GB/s range for sequential workloads.
• Internal sustained read/write speeds reflecting controller and firmware optimization (typical vendor figures list read and write MB/s values for internal benchmarks).
• Random I/O performance in the tens of thousands of IOPS for 4KB pattern tests — tuned for mixed read/write ratios common in virtualized environments.

Workload suitability — where this SSD shines

The Mixed-Use (MU) designation denotes a drive created to handle both read and write-intensive tasks without the premium cost of pure write-optimized (enterprise endurance) SSDs. This model is a practical choice for many real-world enterprise workloads.

Primary use cases

• Virtualization and VDI: Fast boot storms, randomized guest OS activity and high concurrency benefit from the drive’s random I/O capability.
• Database servers: OLTP and mixed OLTP/OLAP workloads that require predictable latency and reasonable write endurance.
• Tier-1 application acceleration: Caching layers, metadata stores and high-transaction application tiers.
• General purpose enterprise storage: As part of hybrid arrays, software-defined storage pools or as direct-attached storage in server hosts.

Not recommended for

• Ultra-write-heavy workloads that require extremely high DWPD (e.g., specific logging or telemetry systems where sustained, intense writes exceed the drive's endurance budget).
• Cold archival storage where high capacity HDDs or low-cost large capacity SSDs are a better cost per GB fit.

Endurance, reliability and data protection

Durability and predictable lifetime are central to procurement decisions for enterprise SSDs. Mixed-use SSDs such as the MO003840RXUKK typically offer an endurance rating that supports several drive writes per day, robust internal wear-leveling algorithms, and firmware features tuned to preserve data integrity under constant enterprise loads.

Endurance metrics and what they mean

• Drive Writes Per Day (DWPD): A common metric describing how many times the entire drive capacity can be overwritten each day for the warranty period. Mixed-use drives are frequently specified in the ~1–3 DWPD class to balance cost with durability.
• Total Bytes Written (TBW) / Lifetime writes: Vendors sometimes publish lifetime TBW figures that help translate DWPD into absolute writable terabytes over the warranty period.
• Power-loss protection: Enterprise SSDs often include power-loss protection capacitors or firmware safeguards to reduce the risk of data loss during sudden power events.

Data integrity features

• Advanced ECC and read-refresh algorithms to maintain NAND reliability over time.
• End-to-end data protection within the drive's controller and firmware.
• Vendor firmware updates and diagnostics available through HPE tools for lifecycle health monitoring.

Performance tuning and configuration recommendations

Getting the most from the MO003840RXUKK requires matching RAID level, controller settings, and host-side queues to the expected workload. Below are tactical recommendations that help maximize throughput, reduce latency, and extend usable life.

Host and controller considerations

• Enable native SAS features: Utilize HBA/RAID controller firmware that fully supports SAS 12 Gb/s links and queuing to avoid interface bottlenecks.
• Queue depth and io-scheduler: Tune host queue depth to match the number of active threads and the controller's ability to pipeline requests; too shallow a queue underutilizes the device.
• RAID level: For mixed workloads, RAID 10 is often chosen for balance between performance and redundancy; RAID 6 may be appropriate when higher fault tolerance is required.

Firmware and monitoring

• Keep drive firmware current with vetted HPE updates to ensure optimal compatibility with server platforms and to benefit from performance fixes.
• Use HPE management utilities to monitor SMART attributes, remaining life estimates, and TBW counters.

Compatibility and integration

The MO003840RXUKK is sold and supported as an HPE-branded multi-vendor compatible (MV or MVBC) drive for easy integration into HPE ProLiant Gen10/Gen11 servers and storage enclosures that accept 2.5-inch SAS drives. The drive is typically delivered with an HPE Smart Carrier to ensure tray compatibility and hot-swap readiness.

What admins should check before purchasing

• Server or enclosure compatibility list — verify supported drive firmware/part numbers for your HPE model.
• Backplane and HBA compatibility — confirm support for SAS 12 Gb/s link speeds and backplane cabling.
• Physical tray/carrier fit — ensure the supplied carrier matches your chassis (HPE Smart Carrier is commonly included).

Comparing mixed-use SSDs: how to evaluate alternatives

When comparing the MO003840RXUKK to competing SKU options, procurement and technical teams should weigh capacity, endurance (DWPD/TBW), sustained throughput, random IOPS, price per GB, and manufacturer support/warranty. Mixed-use drives trade some write endurance for lower cost relative to enterprise write-intensive SSDs, so understanding workload write amplification is key.

Decision checklist for buyers

1. Estimate real workload write intensity (GB/day) to map to drive endurance (DWPD / TBW).
2. Compare 4KB random read/write IOPS at expected queue depths to ensure predictable latency under concurrency.
3. Factor total cost of ownership — including warranty period, expected replacement cycles, and energy/shelf density benefits from 2.5" form factor.
4. Validate vendor support and firmware update channels for enterprise lifecycle management.

Practical example: virtualization cluster

In a dense virtualization cluster where each node hosts dozens of VM guests, mixed-use SSDs are commonly deployed as primary VM storage or as a performance tier. The MO003840RXUKK's blend of throughput and random IOPS reduces VM boot times and delivers consistent response for multi-tenant workloads without the cost premium of extremely high-endurance drives.

Best practices for lifecycle management

• Keep a small pool of identical spare drives to replace failing units quickly and minimize rebuild times.
• Monitor SMART and vendor-specific telemetry to plan replacements before failures occur.
• Perform non-disruptive firmware updates where supported and track change logs for behavior changes.

Warranty and RMA considerations

Confirm the warranty period and RMA policy at time of purchase; HPE and authorized resellers may provide differing warranty terms for new, refurbished, or multi-vendor branded units. Be sure to register the drives where vendor programs require it for extended support.

Pricing, availability and procurement tips

Pricing for enterprise SSDs can vary considerably with supply, warranty options, and vendor channel. Because mixed-use drives are widely used, they are often available from multiple authorized HPE resellers and distribution partners. When procuring at scale, negotiate volume discounts, consider short-term promotions, and weigh the benefits of HPE-branded warranty support.

Value assessment — cost per usable GB vs. TCO

• Evaluate cost per usable GB after RAID overhead; higher capacity SSDs reduce rack-level power and cooling per TB.
• Consider indirect costs: rebuild times, administrative overhead, and potential downtime impact for drive failures.
• Balance upfront CAPEX with expected operational lifespan determined from TBW/DWPD figures and monitoring data.

Security and compliance features

Enterprise SSDs often include features that help satisfy regulatory and security requirements including secure erase, media encryption support (where applicable), and firmware traceability. Confirm whether the drive supports hardware encryption or if encryption is handled at the controller/array level.

Encryption and secure erase

• Check the product brief to determine if the drive supports SED (Self-Encrypting Drive) features.
• If hardware encryption is not present, plan for host-based or array-level encryption to meet data governance policies.

Closing technical note

When specifying drives for production clusters, always pair vendor datasheet figures with real-world testing or performance validation in a staging environment that mirrors your production workload. This ensures the MO003840RXUKK meets your latency, throughput, endurance and availability targets before wide-scale deployment.