ATTO ExpressSAS® SAS/SATA Host Bus Adapters (HBAs) provide high-performance data protection to direct-attached SAS and SATA storage. ExpressSAS HBAs are ideal for increased connectivity and maximum performance for data center flexibility.

ExpressSAS HBAs are now ready for the next evolution in computing with our latest PCIe 4.0 product portfolio.

Flexible connectivity solutions

ATTO ExpressSAS HBAs are available with a wide selection of 8, 12 and 16 port options to support a dense connection to storage from rack-mounted servers and workstations in datacenter, data warehousing, video on demand and other high availability, high performance applications.

RAID Protection at No Extra Cost

ExpressSAS HBAs feature ATTO PowerCenter Pro, a game changing software technology that adds hardware RAID capabilities at the cost of a host bus adapter, and without additional drivers or complicated set-up.  PowerCenter Pro is the most effective way to improve performance while also protecting data.


Performance Engineered

ATTO ExpressSAS HBAs incorporate powerful hardware and software elements to manage latency in real-time environments.  Exclusive Advanced Data Streaming (ADS™) Technology maximizes CPU processes to deliver smooth and reliable data transfers and the highest consistent performance.


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ADS Competitor lacks quality performance.
ADS has premium levels of consistent performance.



Efficiently Share Memory

ATTO 12Gb ExpressSAS HBA drivers are architected for multi-CPU platforms.  ATTO NUMA aware hardware drivers consider the I/O patterns to ensure that driver resources are located close to the system I/O resulting in reduced latency for streaming and high IOPS workflows.

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Develop Unique, Quick to Market Solutions

OEMs and system integrators can take advantage of ATTO Target Mode Software Development Kits (SDK) or industry standard driver options to create unique branded storage and appliance solutions.  Through a more tightly integrated driver, an ATTO ExpressSAS SDK provides integrators complete control, ownership and flexibility in creating custom capabilities to address specific product designs.



Enterprise OS Support

Extensive operating system support includes major software releases for Linux®, Windows®, Windows Server®, macOS®, illumos, VMware EXSI Server®, and FreeBSD.

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ExpressSAS® GT - 12Gb/s SAS/SATA PCIe 4.0 Host Bus Adapters (HBAs)

ExpressSAS® H1208GT
Data Rate:12Gb/s
Transfer Rate:9600 MB/s
Ports:8 Internal
Bus Type:PCIe 4.0
ExpressSAS® H120FGT
Data Rate:12Gb/s
Transfer Rate:19200 MB/s
Ports:16 Internal
Bus Type:PCIe 4.0
ExpressSAS® H1244GT
Data Rate:12Gb/s
Transfer Rate:9600 MB/s
Ports:4 Int / 4 Ext
Bus Type:PCIe 4.0
ExpressSAS® H1280GT
Data Rate:12Gb/s
Transfer Rate:9600 MB/s
Ports:8 External
Bus Type:PCIe 4.0
ExpressSAS® H12F0GT
Data Rate:12Gb/s
Transfer Rate:19200 MB/s
Ports:16 External
Bus Type:PCIe 4.0

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