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Fusion-io was an enterprise storage company that put flash memory on PCIe accelerator cards. Instead of treating flash only as a replacement disk, its ioDrive hardware and Virtual Storage Layer software placed high-speed storage close to the server’s processors and applications. The goal was lower latency for databases, cloud services, analytics and hyperscale systems.
The company’s products are now legacy technology. SanDisk acquired Fusion-io in 2014, and later products were sold as SanDisk Fusion ioMemory PCIe accelerators. An ioDrive2 can still be relevant in a compatible older server, but physical fit does not guarantee current operating-system, firmware or support compatibility.
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Fusion-io ioDrive2 1.2TB Gold 24x7 Support Contract - 1 Year | $1,545.96 | Buy on Amazon |
What was Fusion-io?
Fusion-io developed enterprise flash hardware and software centered on PCIe application-acceleration cards. Its best-known products were the ioDrive and ioDrive2 families. The company positioned flash as an application-performance layer rather than simply a faster disk array.
Fusion-io said its customers included database operators, cloud-application providers, big-data analytics teams and hyperscale systems builders. In 2014, the company reported more than 7,000 customers in over 80 countries.
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Its Atomic Series was described as a third-generation flash-memory platform that delivered higher performance than typical SSDs in a fraction of the space. CEO and chairman Shane Robison summarized the company’s pitch as: “Latency is the new dial up,” saying Atomic Series was designed to move data with greater speed, efficiency and reliability.
How did Fusion-io make applications faster?
Flash on the PCIe bus
An ioDrive was installed as a PCIe card inside the server. That put the flash device on the server’s high-speed expansion bus, close to the CPU and application workloads, rather than relying on a separate storage array connected over a network or storage fabric.
The practical benefit was a shorter path between an application and its data. Fusion-io marketed this approach around latency and application acceleration, not just sequential transfer rates. Exact current latency or IOPS figures are not established by the available company material, so those numbers should not be assumed for used cards.
Software integrated with the hardware
The card was paired with Fusion-io’s Virtual Storage Layer (VSL) software. VSL was part of the data path that allowed supported operating systems and applications to use the PCIe flash as storage. SanDisk said its later Fusion ioMemory products included an updated VSL.
This hardware-and-software combination was important: a compatible slot alone was not enough. The operating system, driver, firmware and VSL release all had to work together before an application could use the card reliably.
Reducing storage bottlenecks
Fusion-io targeted workloads where waiting on storage affected overall application time. Databases, cloud applications and analytics jobs were the clearest examples because they can perform many small, latency-sensitive reads and writes. The correct result depended on workload, server design and software configuration; a card did not automatically accelerate every application.
Atomic Series, ioDrive2 and SanDisk Fusion ioMemory
The product names represent a progression from Fusion-io’s own cards to SanDisk-branded successors. The available descriptions do not provide a complete, model-by-model specification table, so capacity, endurance, interface details and benchmark figures should be verified for the exact card being considered.
| Family or platform | What is established | What is not established here |
|---|---|---|
| ioDrive | Fusion-io PCIe application-acceleration card family. | Exact capacities, NAND generation, performance and current support policy are not stated in the available product description. |
| ioDrive2 | Successor in the Fusion-io PCIe accelerator line; commonly encountered as a legacy card. | Exact model specifications, current driver availability and modern-server support are not stated. |
| Atomic Series | Fusion-io described it as a third-generation flash-memory platform with higher performance than typical SSDs in a fraction of the space. | No independent current benchmark series or complete capacity list is established. |
| SanDisk Fusion ioMemory | SanDisk-branded PCIe accelerators using SanDisk NAND, with claimed performance improvements over ioDrive2, datacenter-consolidation benefits and updated VSL software. | Specific model-by-model gains, present-day availability and support terms are not stated. |
Did SanDisk buy Fusion-io?
Yes. SanDisk announced the acquisition on June 16, 2014, for approximately $1.1 billion net of cash assumed. The transaction completed on July 23, 2014, at $11.25 per share. Fusion-io became a wholly owned SanDisk subsidiary, and its NYSE shares stopped trading.
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After the acquisition, SanDisk marketed Fusion ioMemory PCIe accelerators using SanDisk NAND. SanDisk said the newer products improved performance over ioDrive2, supported datacenter consolidation and lower total cost of ownership, and used an updated VSL software layer.
Are Fusion-io cards compatible with modern servers?
Compatibility is possible but cannot be assumed. An ioDrive2 may fit electrically in a server with the right PCIe slot, yet still fail as a usable production device because of driver, firmware, operating-system, boot, thermal or vendor-support constraints. The available historical material does not establish a current support policy for modern servers.
Check the hardware first
- Identify the exact card model and revision, not just “ioDrive2.”
- Confirm the server has an appropriate PCIe slot with adequate physical clearance, power and cooling.
- Check whether the server vendor permits that card and whether its firmware can initialize the device.
Check the software path
- Find the VSL and driver package for the exact card, operating-system version and CPU architecture.
- Verify that the card’s firmware and driver versions are mutually compatible.
- Confirm whether the card can be used as a data volume, boot device or only under a supported legacy configuration.
Check operational risk
- Establish who, if anyone, provides firmware, driver and failure-replacement support.
- Validate backup, monitoring and secure-erase procedures before putting important data on the card.
- Test the workload in the target server; historical marketing claims are not a substitute for a current benchmark on your software stack.
A used card can therefore be technically interesting without being a sensible production purchase. The total cost includes integration time, spare hardware, software maintenance and the risk of running outside a supported configuration—not only the second-hand purchase price.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Which workloads suited Fusion-io best?
Databases
Database systems with storage-sensitive transactions or indexes were a primary target because reducing data-access latency can improve response time. The benefit still depended on the database engine, cache policy and working set.
Cloud applications
Cloud services could use PCIe flash to accelerate storage-intensive application tiers and consolidate more work onto a server. SanDisk specifically associated its newer accelerators with datacenter consolidation and lower total cost of ownership.
Big-data analytics
Analytics pipelines that repeatedly read and write large intermediate datasets were another stated workload. Results varied with data layout, parallelism and whether the job was limited by storage at all.
Hyperscale systems
Large-scale operators could integrate the cards into server designs where predictable local flash performance mattered. Deployment economics and fleet-level support were as important as raw device speed.
What to consider before buying an ioDrive2
- Define the bottleneck. Measure whether the application is waiting on storage rather than CPU, memory, network or software locks.
- Match the exact model. Record capacity, interface, firmware and NAND details from the card label and management tools.
- Validate the complete stack. Check server, PCIe slot, operating system, driver, VSL and firmware together.
- Run a representative test. Use the real database or application pattern, not only a synthetic benchmark.
- Price the lifecycle. Include support, spares, migration effort, power, cooling and a replacement plan.
The phrase “Fusion-io ioDrive2 PCIe accelerator” describes a notable piece of storage history, but it should be treated as a legacy product category. For a new deployment, confirm documented compatibility and support before committing; for a lab or migration project, isolate the card and test it against the precise software environment.
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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.
