P49339-001 HPE 6.4tb Mixed Use Sas 2.5inch Sff Bc SSD for HPE Proliant Gen10 Plus Server

HPE P49339-001 PM1655 6.4TB SAS SSD Product overview  

The HPE P49339-001 (PM1655) 6.4TB SAS 12G Mixed Use SFF SC TLC Multi-Vendor SSD is engineered for enterprise-class storage tiers within HPE Gen10 and Gen10 Plus servers. Positioned as a high-capacity, mixed-use solid state drive in a 2.5" small form factor (SFF) with Single-Connector (SC) interface options, this drive blends sustained throughput, consistent low latency, and data integrity features required by modern data center workloads. It is a multi-vendor certified option designed for direct replacement or fleet expansion across heterogeneous HPE server deployments, offering compatibility, predictable behavior under mixed read/write patterns, and the high endurance characteristics expected for server-attached SAS storage.

This SSD category matters for modern enterprise  

Data centers have shifted toward hybrid storage architectures where SSDs handle active datasets and HDDs act as capacity tiers. The PM1655 6.4TB SAS 12G Mixed Use SSD category targets the “mixed use” sweet spot — workloads that combine both reads and writes in moderate-to-high intensity: virtual desktop infrastructure (VDI), database indexing, web application backends, caching layers, analytics staging areas, and virtual machine boot/storage tiers. These drives provide:

• High-capacity flash in a compact SFF form factor, enabling denser storage configurations per server bay.
• Enterprise-grade SAS 12G interface for compatibility with existing HBA/RAID controllers and predictable behavior under multi-queue workloads.
• Cost-effective TLC (Triple-Level Cell) NAND with optimized firmware and over-provisioning for improved endurance in mixed-use scenarios.

Targeted workloads and use cases

The category excels in use cases where consistent responsiveness matters and data set sizes require larger single-drive capacities:

• Virtualization & VM density: Boot volumes, VM disks for moderate write patterns, and storages supporting many small I/O operations.
• Databases & analytics: Indexes, temp tablespaces, and OLTP/OLAP staging where a balance of read and write performance is required.
• Web & application servers: Session stores, high-concurrency caches, and file metadata where predictable latency is critical.
• Edge & remote data centers: Compact servers (SFF chassis) needing larger SSD capacity without moving to larger form factors.

Technical highlights and differentiators

Form factor, interface and capacity

These SSDs come in a 2.5-inch SFF form factor optimized for HPE server trays and hot-swap bays. The SAS 12G (12.0 Gbit/s) interface ensures broad compatibility with enterprise SAS controllers and HBAs and supports dual-port redundancy in multi-path configurations where applicable. The 6.4TB capacity provides a high-density option for environments that need to maximize storage per slot while retaining enterprise features.

Mixed use TLC NAND and endurance considerations

The PM1655 series uses TLC NAND optimized for mixed-use workloads by combining firmware-level write amplification controls, dynamic over-provisioning, and advanced error-correction algorithms. Key endurance and reliability strategies include:

• Wear-leveling algorithms to extend usable lifetime across TLC die.
• Dynamic spare area allocation to maintain steady performance as the drive fills.
• Power-loss protection (where implemented at controller/firmware level) to ensure metadata consistency and prevent write interruption corruption.
• Enterprise SMART reporting and telemetry to monitor health, remaining life, and error conditions.

Performance metrics and what to expect

In this category, drives are tuned to deliver a mix of sequential and random performance characteristics appropriate for mixed workloads:

• Sequential throughput: Strong sequential read and write rates for data-moving operations and large-file transfers.
• Random IOPS: Tuned random read/write IOPS to support many small blocks, database transactions, and virtual machine I/O.
• Latency: Consistent sub-millisecond access times under normal load; designed for deterministic performance under bursty or mixed load patterns.

Compatibility with HPE Gen10 and Gen10 Plus servers

The “Multi Vendor” designation indicates HPE certification across OEM and compatible third-party suppliers, providing administrators flexibility when procuring drives or when mixing vendor-sourced drives for cost, availability, or warranty reasons. Key compatibility notes:

• Certified for HPE ProLiant Gen10 and Gen10 Plus server lines; check specific server firmware and HBA versions for best compatibility.
• Works with standard HPE drive trays and interposers; many models are digitally signed firmware to satisfy HPE SmartComponents requirements.
• Supports SAS RAID controllers commonly used in HPE servers—ensure firmware is up-to-date on controllers to avoid interoperability issues.

Deployment best practices

Firmware and controller considerations

Deploying drives in enterprise servers requires attention to firmware matching between drive and system controller. Best practices include:

• Always verify HPE advisories and supported firmware matrices for Gen10/Gen10 Plus servers prior to large-scale rollout.
• Apply controller firmware updates that enable SAS 12G stability and any vendor-recommended patches for PM1655 compatibility.
• When replacing drives in an existing array, follow HPE’s drive replacement procedure to avoid rebuild issues, and allow RAID controllers to perform full background initialization if required.

Over-provisioning, queue depth and RAID tuning

To extract the most consistent performance:

• Consider logical over-provisioning at the storage layer (leaving some unused capacity) to reduce write amplification and improve endurance.
• Tune HBA queue depths to balance parallelism and latency; enterprise SAS controllers often have recommended queue depth settings for mixed-use SSDs.
• Choose RAID levels according to workload characteristics — RAID 10 for write-heavy or latency-sensitive workloads; RAID 5/6 for capacity-efficient configurations where slight write penalty is acceptable.

Thermal and power management

Large-capacity TLC SSDs can generate heat under sustained I/O. Consider:

• Ensuring server airflow paths are unobstructed and fans are operating per HPE’s thermal guidance.
• Monitoring drive temperature SMART attributes and setting alerts for rising temperatures.
• Deploying drives in bays recommended by HPE for thermal distribution if using mixed drive types in the same chassis.

Comparisons and decision criteria

How PM1655 6.4TB compares with alternative tiers

When evaluating the PM1655 category against alternatives, consider these vectors:

• Cost per GB: TLC-based mixed-use drives typically offer a lower cost per GB than high-endurance SLC/MLC enterprise drives while delivering acceptable endurance for many production workloads.
• Endurance (DWPD/TBW): Assess drive endurance ratings expressed as drive writes per day (DWPD) or total bytes written (TBW) over warranty period — choose a drive whose endurance fits your write profile.
• Interface: SAS 12G offers multi-path redundancy and enterprise-level compatibility versus NVMe’s lower latency; choose SAS if existing infrastructure relies on SAS HBAs/RAID controllers and you need controller-managed RAID capabilities.
• Firmware support: HPE digitally signed firmware variants may be required for SmartComponents compatibility—factor in procurement availability.

When to choose PM1655 6.4TB over NVMe or lower-capacity SSDs

The PM1655 6.4TB SAS drive is an excellent choice when:

• You need high capacity per 2.5" bay while retaining SAS connectivity and RAID controller features.
• The workload is a mixed read/write profile where the cost-efficiency of TLC outweighs the ultra-low latency of NVMe.
• Existing server fleets are Gen10/Gen10 Plus ProLiant systems with validated SAS environments and you want minimal architecture change.

Procurement, warranty and lifecycle considerations

Buying tips and SKU verification

Procurement teams should verify SKU details carefully:

• Confirm the exact part number (HPE P49339-001) matches the required firmware signing and warranty conditions for your region.
• Check if the drive is new, refurbished, or multi-vendor compatible; multi-vendor may indicate equivalent OEM/third-party products that meet HPE’s interoperability standards.
• Request vendor-supplied compatibility matrices and the latest HPE server storage compatibility guides to avoid unexpected incompatibilities.

Warranty, RMA and lifecycle planning

Enterprise SSDs typically carry limited warranties and RMA procedures:

• Review the warranty period (often 3–5 years for enterprise SSDs) and whether the warranty is OEM-backed or provided by a reseller.
• Maintain spare drive inventory and follow HPE RMA procedures to minimize downtime in case of predictive or actual drive failures.
• Plan for lifecycle upgrades—monitor SMART metrics to preemptively replace drives approaching end-of-life and to schedule non-disruptive replacements during maintenance windows.

Checklist for buyers and admins

Before purchase

• Confirm the exact HPE part number and firmware signing requirements.
• Validate compatibility with your specific Gen10 or Gen10 Plus server model and RAID controller revision.
• Match endurance specs (DWPD/TBW) to anticipated workload writes.

During deployment

• Register drives and enable health telemetry in HPE management tools.
• Monitor initial burn-in behavior under expected workload to confirm thermal and performance profiles.
• Set alerts for temperature and SMART thresholds to catch issues early.

After deployment

• Track long-term SMART trends and plan replacements when drives approach manufacturer's end-of-life indicators.
• Keep firmware and controller drivers aligned with HPE guidance, and validate updates in staging environments first.
• Maintain spare units and document RMA processes for quick swap in the event of failure.

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