ATTO Celerity™ Fibre Channel host bus adapters (HBAs) deliver the fastest data throughput (both MB/s and IOPs) available for today's most demanding storage environments, including physical and virtual datacenters, tape streaming and backup, rich content delivery, and server clustering.

Powering the modern data center

Celerity HBAs unleash the performance of all-flash data centers with the support of NVMe fabric technology for demanding workloads that require extreme performance, ultra-low latency, and storage persistency to shared storage resources.

Engineered for performance

Celerity HBAs have an advantage over the leading competitor embedded directly in the processor's architecture. The ATTO controller features multiple cores, providing full IOPS performance to a single port in "active standby" mode on a dual-port HBA. If a port, cable or SFP fails a port on the ATTO adapter can support up to 2.5X as many IOPS as the competitive HBA. ATTO Celerity HBAs allow sustained maximum performance, enabling users to continue to meet service level agreements.

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Flexible configuration options

Available in low-profile single-, dual-, and quad-port versions, ATTO Celerity HBAs are backward compatible, reducing the complexity of deploying and managing the SAN, and take full advantage of advancements for reliability and forward error correction to improve network performance and resiliency



Connect your workstation to enterprise storage

ATTO Celerity HBAs, featuring Multipath Director™ technology, are the only solution that allows direct connectivity to enterprise storage not just for servers, but also Windows®, Linux®, and macOS® workstations. They provide load balancing and path failover protection to improve overall Fibre Channel SAN efficiency with consistent uninterrupted access to your data.

Optimize performance to power real-time decision-making

Move large volumes of data with fast, predicable and deterministic response time by optimizing performance up to 3200MB/s per channel. Built into every Celerity HBA, ATTO Advanced Data Streaming (ADS™) technology manages latency by providing controlled acceleration for smooth data streaming and allows you to maintain the highest consistent performance in data intensive environments.

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Disrupted transfer with peaks and drops. Transfer rate dips below optimal performance levels.

ATTO ADS™ technology stabilizes data streams, providing more optimal throughput than the competition.

Continuous availability across your network

Whether you're looking for a disaster recovery solution, downtime avoidance or a higher level of availability, Celerity HBAs make it possible to have longer distances between your servers and storage. Featuring 5X more buffer credits than the competition, Celerity HBAs support more data in-flight allowing you to extend your connection to storage up to 10 km without degrading throughput.

Double your bandwidth

Celerity Gen 6 HBAs deliver 2x greater bandwidth when compared to previous generations. They are purpose-built to address the performance, reliability and scalability requirements of hyper-scale virtualization, SSD technology, and new data architectures.



Develop Unique, Quick to Market Solutions

ATTO Target Mode SDK gives developers complete control and flexibility in creating custom capabilities that differentiate their products without tying up internal resources and yet can be simplified enough to push product out to market quickly. ATTO Target Mode Driver is a specialized driver that makes any storage device appear as native Fibre Channel and SAS. Available for ATTO Celerity™ Fibre Channel HBAs, it provides the ability to run both initiator and target-mode devices with a single driver.

The custom ATTO Target Mode Driver interface unlocks programming and fine-tuning flexibility for virtually unlimited performance possibilities. With this, developers can elevate their product well above the competition and stand out as a performance leader.  By custom crafting drivers for your storage solution, you are in complete control of performance specifications, compatibility, and integration.  ATTO Target Mode Drivers offer developers:

Improved API between HBA driver and target mode for increased stability and reliability

  • Task management improvements
  • Able to better handle errors which may occur

Better communication between our HBA driver and target mode

  • Performance improvements
  • Improved use of processors, concurrent IO of our driver, utilize greater resource pools
  • Support multiple queues as opposed to single threaded solution
  • Common Code across protocols makes it easy to implement for Fibre Channel solutions

High compatibility and broad interoperability

We are constantly testing and certifying our products with third-party vendors, from OS and servers to switches and storage, to ensure the widest range of compatibility. ATTO works closely with industry leaders to ensure certified interoperability allowing you to deploy robust storage area network (SAN) infrastructures with proven best practices.

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Celerity™ FC - 32Gb/s Gen 6 Fibre Channel Host Bus Adapters (HBAs)

Celerity FC-321E
Data Rate:32Gb/s
Transfer Rate:3200MB/s
Ports:1
Bus Type:x8 PCIe 3.0
Included Optics1 SFP+
Celerity FC-322E
Data Rate:32Gb/s
Transfer Rate:6400MB/s
Ports:2
Bus Type:x8 PCIe 3.0
Included Optics2 SFP+'s
Celerity FC-324E
Data Rate:32Gb/s
Transfer Rate:12.8GB/s
Ports:4
Bus Type:x16 PCIe 3.0
Included Optics4 SFP+'s

Celerity™ FC - 16Gb/s Gen 6 Fibre Channel Host Bus Adapters (HBAs)

Celerity FC-161P
Data Rate:16Gb/s
Transfer Rate:1600MB/s
Ports:1
Bus Type:x8 PCIe 3.0
Included Optics1 SFP+
Celerity FC-162P
Data Rate:16Gb/s
Transfer Rate:3200MB/s
Ports:2
Bus Type:x8 PCIe 3.0
Included Optics2 SFP+'s
Celerity FC-164P
Data Rate:16Gb/s
Transfer Rate:6400MB/s
Ports:4
Bus Type:x8 PCIe 3.0
Included Optics4 SFF's

Celerity™ FC - 8Gb/s Fibre Channel Host Bus Adapters (HBAs)

Celerity FC-81EN
Data Rate:8Gb/s
Transfer Rate:800MB/s
Ports:1
Bus Type:x8 PCIe 2.0
Included Optics1 SFP+
Celerity FC-82EN
Data Rate:8Gb/s
Transfer Rate:1600MB/s
Ports:2
Bus Type:x8 PCIe 2.0
Included Optics2 SFP+'s
Celerity FC-84EN
Data Rate:8Gb/s
Transfer Rate:3200MB/s
Ports:4
Bus Type:x8 PCIe 2.0
Included Optics4 SFP+'s

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