The Tool Desk
Outbyte Driver Updater FREEFix the driver behind crashes, sound loss and screen glitchesFind Drivers →Outbyte PC Repair FREEClear out junk files and repair common Windows errorsFree Scan →The Kioxia CM9-R 15.36TB is a PCIe 5.0 enterprise NVMe SSD in a 7.5 mm E3.S form factor—not a consumer M.2 drive. It is designed for read-intensive workloads and rated at 1 drive write per day (DWPD). Its headline speeds are high, but whether it is a good fit depends first on E3.S platform compatibility and then on how much your workload writes.
What the CM9-R 15.36TB is—and what it is not
Kioxia’s 2025 product brief describes the CM9-R E3.S family as a read-intensive enterprise SSD compliant with PCIe 5.0 and NVMe 2.0. The 15,360 GB model uses BiCS FLASH generation 8 3D TLC NAND. Its intended applications include AI and machine learning, business intelligence, data warehousing, transactional and relational databases, software-defined storage, and virtualization. Kioxia describes the family as “a read intensive SSD that is optimized to support a broad range of enterprise applications and associated workloads.” (Kioxia CM9-R Series (E3.S) Product Brief, 2025.)
As an Amazon Associate I earn from qualifying purchases.
The E3.S form factor is a physical and platform requirement, not just a product label. This drive will not drop into a standard M.2 slot; the system needs an appropriate E3.S bay, host support for its PCIe/NVMe interface, and suitable cooling. The listed family configuration supports PCIe 5.0 x4, with dual-port x2 support reported by StorageReview. Confirm that topology against the exact ordered SKU and intended system. (StorageReview’s review.)
Recommended Free Tools
How fast is the 15.36TB model?
Kioxia’s figures below are maximum sustained specifications for the 15,360 GB model in single-port 1×4 mode. Sequential results use 128 KiB blocks; random results use 4 KiB blocks. These are manufacturer ratings, not a promise that every server will reach them: host configuration, queue depth, workload, and other test conditions affect observed performance. (Kioxia, 2025.)
#1 Best Overall
- Read Before You Buy — No Video Output: These adapters support charging and USB 2.0 data transfer, but cannot transmit video signals. Except for standard USB webcams (which use USB data only), they are not compatible with HDMI/DisplayPort cables, video-capable USB-C hubs, or docking stations with video output.
- Convert USB-A Ports to USB-C: Designed to connect USB-C earphones, cables, flash drives, card readers, and other USB-C accessories to standard USB-A ports. Plug-and-play with no drivers or software required.
- Aluminum Alloy Housing: Built with a sturdy aluminum alloy shell that aids in heat dissipation and protects against daily wear and scratches. Designed to maintain a stable and secure connection.
- Compact & Travel-Friendly: The ultra-compact design allows the adapter to stay plugged into your device without blocking adjacent ports or adding bulk, reducing wear and tear on your original USB ports.
- 12-Month Warranty: Backed by a 12-month manufacturer warranty for peace of mind. Designed to meet strict quality control standards for reliable everyday performance.
| Measure | Kioxia rating | What it describes |
|---|---|---|
| Sequential read | Up to 14,800 MB/s | Sustained 128 KiB reads |
| Sequential write | Up to 11,000 MB/s | Sustained 128 KiB writes |
| Random read | Up to 3,400K IOPS | Sustained 4 KiB reads |
| Random write | Up to 540K IOPS | Sustained 4 KiB writes |
What independent tests found
ServeTheHome tested a KCM9XRJE15T3 sample with firmware 15ETE105 using fio 3.42 and io_uring direct I/O on an Intel Xeon w9-3495X system running Ubuntu 26.04 LTS. Each data point ran for 300 seconds after a 30-second ramp period; its random-test ladder reached an outstanding I/O level of 2048. In sequential 128K sweeps, the review measured 14.9 GB/s read and 11.3 GB/s write. Those are results from that disclosed setup, not guaranteed speeds in another platform. Its comparison drives ranged from 1.6TB to 7.68TB, so their capacities differ from the CM9-R sample’s 15.36TB. (ServeTheHome, October 5, 2026.)
StorageReview characterized the 15.36TB capacity as the point where the CM9-R has its strongest write specifications and reported the lowest low-queue-depth latency in its comparison group across its tested workloads. That is a finding from its test suite and comparison set, not a universal ranking. (StorageReview, September 2, 2026.)
Rank #2
- 5-in-1 USB-C Hub: Experience comprehensive connectivity featuring a Power Delivery input, two USB-A 2.0 ports, a USB-A 3.0 port, and an HDMI port. (Note: The USB-C power delivery input port is only for connecting an external wall charger to power your laptop and cannot power peripheral devices.)
- 90W Pass-Through Charging: Achieve optimal charging with 90W pass-through power to your laptop, supported by a total input of 100W, with the hub reserving 10W for operational efficiency. (Note: Wall charger not included.)
- Quick Data Transfers: Accelerate your productivity with rapid data transfers using a high-speed 5Gbps USB 3.0 port and two 480Mbps USB 2.0 ports.
- 4K HDMI Display: Enhance your visual experience with a hub capable of delivering 4K resolution at 30Hz in both mirror and extend modes. Please note that this hub is compatible with MacBook (macOS 12 and newer), Windows 10 and 11, ChromeOS, and laptops equipped with DP Alt Mode and Power Delivery. Note: This device is not compatible with Linux.
- What You Get: Anker USB-C Hub (5-in-1, 4K HDMI), welcome guide, 18-month warranty, and our friendly customer service.
ServeTheHome likewise found strong low-outstanding-I/O results, but noted that the Phison Pascari X200E 6.4TB was faster in some higher-I/O comparisons. It described CM9-R as strong in mixed workloads while suggesting the write-focused CM9-V could do better in some write-heavy comparisons. The CM9-R is therefore not best understood as the fastest choice for every workload; queue depth, write mix, capacity, and the comparison set matter. (ServeTheHome.)
Is 1 DWPD enough for your workload?
Kioxia rates the CM9-R E3.S family at 1 DWPD, making endurance a central selection criterion. DWPD means drive writes per day over the applicable warranty period, but the product brief excerpt does not state that period or a total bytes-written limit. Get the endurance and warranty terms for the exact SKU from Kioxia or the seller before sizing a deployment.
Rank #3
- Sleek 7-in-1 USB-C Hub: Features an HDMI port, two USB-A 3.0 ports, and a USB-C data port, each providing 5Gbps transfer speeds. It also includes a USB-C PD input port for charging up to 100W and dual SD and TF card slots, all in a compact design.
- Flawless 4K@60Hz Video with HDMI: Delivers exceptional clarity and smoothness with its 4K@60Hz HDMI port, making it ideal for high-definition presentations and entertainment. (Note: Only the HDMI port supports video projection; the USB-C port is for data transfer only.)
- Double Up on Efficiency: The two USB-A 3.0 ports and a USB-C port support a fast 5Gbps data rate, significantly boosting your transfer speeds and improving productivity.
- Fast and Reliable 85W Charging: Offers high-capacity, speedy charging for laptops up to 85W, so you spend less time tethered to an outlet and more time being productive.
- What You Get: Anker USB-C Hub (7-in-1), welcome guide, 18-month warranty, and our friendly customer service.
If an application writes heavily or continuously, compare its expected daily writes with the drive’s rated endurance rather than relying on peak throughput. Kioxia’s separate CM9-V line is rated at 3 DWPD and is positioned for mixed use; it is not simply the same drive with a higher endurance number, and capacity and performance options differ. Match the family to the workload and compare the exact model specifications. (Kioxia, 2025; StorageReview.)
Platform, protection, and SKU checks before buying
StorageReview reports 25W typical active power and lists power-loss protection and end-to-end data protection as standard for the reviewed family. It also identifies SIE, SED, and FIPS 140-3 SED security variants. These details should be confirmed for the exact ordered part number: family-level capabilities and a review sample do not establish what is included in every SKU. (StorageReview.)
Rank #4
- Dual Converters, Infinite Potential：Includes 2× USB C male to USB A female adapters and 2× USB A male to USB C female adapters. Perfect for a wide range of uses—tablets with Bluetooth keyboards, expand USB ports on macbook, and more. Two different converters for all your daily needs
- Next-Level 10Gbps & 3A Charging: No more slow 480Mbps, this usb to usb c adapter has a transfer speed of up to 10Gbps, allowing you to do more transferring in less time. This usb adapter fits both USB A and USB C charger, supporting up to 3A fast charging
- Upgraded Exquisite Craftsmanship: With an aluminum alloy housing and metal connector, the usbc to usb adapter is extremely durable and sturdy. Rigorously tested to withstand more than 10,000 times of plugging and unplugging, ensuring long-lasting performance
- Broad Compatible: The usb c to usb adapter widely supports all USB C/ USB A devices like laptops, tablets, cellphones, car chargers, and phone chargers. Such as compatible with MacBook Pro/Air 2023/2022, Thunderbolt 4/3 Devices,Apple MagSafe Watch 9/8/7/SE/Ultra, iPad Pro 2022/2021, Samsung Galaxy S23/S20/S10, and iPhone 17/16/15 Pro. Plug and play
- Please Note: To reach 10Gbps speed, keep the cable under 3.3 ft. For USB A Male to USB C adapters, try flipping the USB C connector. USB C Male to USB A adapters support bidirectional 10Gbps transfer within 3.3 ft
- Chassis and bay: Verify a 7.5 mm E3.S bay and physical support for the specific drive.
- Host interface: Confirm PCIe 5.0/NVMe support and whether the required x4 or dual-port x2 arrangement is available.
- Thermals: Check the server’s airflow and cooling design. ServeTheHome recorded a peak composite temperature of 60.9°C against a 76.9°C warning threshold in its run; those figures describe its test enclosure and conditions, not another system’s expected temperatures. (ServeTheHome.)
- Data protection and security: Confirm the exact SKU’s power-loss protection, end-to-end protection, and required security certification or encryption option.
- Warranty and procurement: ServeTheHome lists a five-year warranty for its sample, but verify warranty coverage, exact part number, price, and regional stock with the seller or manufacturer before ordering. The reviewed sources do not establish current street price or availability.
Verdict: a strong candidate when reads dominate and the system fits
The CM9-R 15.36TB makes sense to evaluate for high-capacity enterprise storage where reads dominate, PCIe 5.0 bandwidth is useful, and the host has a compatible E3.S bay. Its rated throughput is substantial, and independent reviews report strong performance under their specific test conditions. The 1 DWPD rating makes it a less natural fit for sustained write-heavy use; compare the CM9-V or another higher-endurance option when write volume is a primary requirement. Before procurement, validate platform fit, cooling, exact SKU protections, endurance terms, and warranty rather than choosing from headline speed alone.
Do these 3 things before closing this tab:
1Repair Windows errors before they cause bigger problems2Scan for outdated or missing drivers - takes under a minute3Clear out junk files and repair common Windows errorsQuick Recap
Best Value
- 5-in-1 Connectivity: Equipped with a 4K HDMI port, a 5 Gbps USB-C data port, two 5 Gbps USB-A ports, and a USB C 100W PD-IN port. Note: The USB C 100W PD-IN port supports only charging and does not support data transfer devices such as headphones or speakers.
- Powerful Pass-Through Charging: Supports up to 85W pass-through charging so you can power up your laptop while you use the hub. Note: Pass-through charging requires a charger (not included). Note: To achieve full power for iPad, we recommend using a 45W wall charger.
- Transfer Files in Seconds: Move files to and from your laptop at speeds of up to 5 Gbps via the USB-C and USB-A data ports. Note: The USB C 5Gbps Data port does not support video output.
- HD Display: Connect to the HDMI port to stream or mirror content to an external monitor in resolutions of up to 4K@30Hz. Note: The USB-C ports do not support video output.
- What You Get: Anker 332 USB-C Hub (5-in-1), welcome guide, our worry-free 18-month warranty, and friendly customer service.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
