HPE 1.6TB NVME MU SFF BC U.3 PM1735A SSD - P50227-B21

HPE P50227-B21 1.6TB NVMe Mixed-Use SFF Basic Carrier U.3 SSD

Overview

The HPE P50227-B21 is a 1.6TB NVMe U.3 solid-state drive built on Samsung's PM1735A controller, purpose-rated for mixed-use server workloads where both read-intensive analytics and write-intensive logging run simultaneously. At 1.25 million random read IOPS (4KiB, Q256) and 280,000 random write IOPS (4KiB, Q64), this drive fits the profile of a surveillance or AI-compute node that can't afford the latency cliff of a SATA SAS alternative. The P50227-B21 ships in a Small Form Factor Basic Carrier (SFF BC) tray, making it a direct hot-swap replacement in HPE Gen10 and Gen10+ server bays already populated with U.3-capable backplanes.

If you're evaluating NVMe storage for an HPE server build — whether a HPE server or storage platform refresh or a net-new deployment — the PM1735A family targets workloads that sit between read-optimized caching tiers and write-heavy logging tiers: mixed-use, sustained, and always-on.

Key Features

• 1.25M Max Random Read IOPS (4KiB, Q256): At queue depth 256, this drive delivers 1,250,000 read IOPS — enough to service simultaneous video decode, database lookups, and analytics pipelines on a single spindle. For a VMS server indexing 30+ camera streams while simultaneously running motion analytics, that headroom means the storage tier stops being the bottleneck.
• 270,000 Random Write IOPS at Q=16: At a practical queue depth of 16 — the operating point most enterprise workloads actually hit — write throughput reaches 270,000 IOPS. That translates to uninterrupted write streams for continuous video recording alongside simultaneous read-back for live review, without the write-cliff typical of read-optimized SSDs.
• 8,760 TBW Lifetime Write Endurance: 8,760 terabytes written over the rated life of the drive. For a surveillance deployment writing at a sustained 500 MB/s, that represents roughly 200 days of continuous write — but in practice mixed-use workloads rarely hit sustained-write limits, making this endurance figure conservative for most deployments.
• U.3 Interface (NVMe over PCIe): U.3 uses the same 2.5-inch SFF connector as U.2 and SATA/SAS but negotiates NVMe over PCIe lanes, giving you the latency and IOPS of NVMe without requiring a separate M.2 slot or PCIe add-in card. In HPE servers with a U.3-capable backplane, this drive drops in exactly where a SAS or SATA drive would sit — no cabling changes, no riser cards.
• Hot-Plug Capable: The SFF BC tray supports hot-plug insertion and removal, so you can swap a failed drive during a live recording window without taking the server offline. For a 24/7 surveillance node where downtime means lost footage, this is a meaningful operational advantage over non-hot-plug NVMe form factors.
• 15.1W Rated Power Draw: NVMe drives carry a reputation for high power consumption, but 15.1W is within the range HPE's ProLiant power budgets account for in dense NVMe configurations. At this draw, you can populate multiple bays in a standard HPE chassis without triggering power supply headroom concerns — worth verifying against your specific chassis power budget before ordering at scale.
• Mixed-Use Workload Rating: Unlike read-optimized (RO) drives that sacrifice write endurance for peak sequential read, or write-intensive (WI) drives that sacrifice read speed, MU drives like the P50227-B21 are rated for sustained bi-directional I/O. This makes them the correct choice for a network video recorder or analytics server that reads and writes concurrently around the clock.

Integration & Compatibility

The P50227-B21 is designed for HPE ProLiant and Apollo servers with U.3-capable drive bays and HPE Smart Array or NVMe-direct backplane configurations. The SFF Basic Carrier tray is the standard HPE hot-plug carrier format; verify your target server generation supports U.3 NVMe in the target bay position before ordering — some Gen10 backplanes are U.2-only or require a firmware update to enable U.3 negotiation.

For enterprise server storage planning in a surveillance or AI compute context, pair this drive with HPE's NVMe-optimized RAID controllers or configure it as a direct NVMe namespace for lowest-latency access. In VMware vSphere or Hyper-V environments, the drive presents as a standard NVMe block device and integrates with storage policies without additional drivers on current HPE-supported OS images.

If you're building a high-density NVMe pool, consider the role of a PoE network switch at the edge — keeping camera-side bandwidth clean and separate from the storage fabric reduces the risk of network congestion affecting write throughput on the server side. For larger storage planning questions, a storage retention planning guide can help size total capacity against retention windows before committing to drive count.

Frequently Asked Questions

Q: What servers is the HPE P50227-B21 compatible with?

A: The P50227-B21 is designed for HPE ProLiant and Apollo servers with U.3-capable NVMe drive bays and SFF hot-plug backplanes. Compatibility depends on whether the target server's backplane supports U.3 NVMe negotiation — verify against your specific server model and firmware revision before ordering.

Q: What does