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Description
ATTO Technology ExpressSAS R644 4 Port-External/4-Port Internal 6 Gbps SAS/SATA RAID AdapterLong Standing RAID Experience Flexible Connectivity Solutions Transfer Rates of Up to 1200 MBps Port Performance Engineered Advanced Management Tools Advanced Data Streaming DriveAssure Technology CacheAssure Technology Data Recovery Mode x8 PCIe 2. 0 Bus Characteristics The ExpressSAS R644 4 Port External 4 Port Internal 6 Gbps SAS SATA RAID Adapter from ATTO Technology offers the fastest available connectivity to SAS or SATA storage with integrated
- Long-Standing RAID Experience
- Flexible Connectivity Solutions
- Transfer Rates of Up to 1200 MBps/Port
- Performance Engineered
- Advanced Management Tools
- Advanced Data Streaming
- DriveAssure Technology
- CacheAssure Technology
- Data Recovery Mode
- x8 PCIe 2.0 Bus Characteristics
The ExpressSAS R644 4 Port-External/4-Port Internal 6 Gbps SAS/SATA RAID Adapter from ATTO Technology offers the fastest available connectivity to SAS or SATA storage with integrated RAID protection. The adapter provides 6 Gbps SAS/SATA connectivity to Direct Attached Storage via 4 external/4 internal ports. With transfer rates of up to 1200MBps per port, the 6Gbps SAS/SATA RAID Adapter is well suited for high-bandwidth workflows, such as digital content creation, streaming video and audio, transactional databases and email and Web servers.
The 6 Gbps SAS/SATA RAID Adapter combines advanced engineering and innovative features to ensure smooth data transfers and consistent performance. Leveraging ATTO's market-tested RAID stack and exclusive latency management features, this adapter helps customers create, share and protect data and digital assets more effectively.
- Long-Standing RAID Experience
- The ExpressSAS 6 Gbps SAS/SATA RAID adapter features the time-proven ATTO RAID Stack, DVRAID and CacheAssure, proprietary technologies developed to provide the most robust RAID based connectivity solution in the industry.
- Flexible Connectivity Solutions
- The ExpressSAS 6 Gbps SAS/SATA RAID adapter is ideal for a wide variety of IT and digital media environments that require high-performance and parity RAID protected data. This adapter offers driver support for Windows, Linux and Mac OS X that provides a single connectivity solution for customers with heterogeneous operating system environments.
- Performance Engineered
- The ExpressSAS 6 Gbps SAS/SATA RAID adapter allows you to instantly protect their critical data while enhancing performance. It is designed to maintain full performance in degraded mode and to minimize downtime with 50% faster rebuilds, limiting exposure to a second drive failure. Its latency management features like Advanced Data Streaming (ADS) Technology and DriveAssure minimize data transfer interruptions to ensure the highest level of consistent performance.
- Advanced Management Tools
- The Configuration Tool features an intuitive GUI that simplifies RAID group configuration, management and monitoring. The ExpressSAS 6 Gbps SAS/SATA RAID adapter offers the most advanced performance tuning capabilities and troubleshooting utilities, providing users with sophisticated diagnostics and the flexibility to control settings for specific applications.
- Applications
- The ExpressSAS RAID adapter adds high-performance RAID data protection to direct-attached SAS and SATA JBOD storage. It is an ideal connectivity solution for high-performance media and entertainment and general IT environments. The adapter delivers affordable host-level RAID for high-bandwidth workflows such as digital content creation, streaming video, transactional databases and email and Web servers.
- Advanced Data Streaming (ADS)
- The Latency-management technology that controls the acceleration of data transfers to move large amounts of data faster and more efficiently.
- DriveAssure Technology
- Drive assessment and latency management technology that minimizes the likelihood of RAID groups becoming degraded or taken offline due to slow drives, ensuring uninterrupted access to data.
- CacheAssure Technology
- The ExpressSAS 6 Gbps SAS/SATA RAID adapter's flash-based protection module provides a maintenance-free solution that safeguard against the loss of cached data during a power or system failure.
- Data Recovery Mode
- The adapter features mechanism that increases the probability of fully or partially recovering data that is lost due to a disk failure and offline RAID group.
- User Benefits
-
- High performance host-based RAID for direct attached storage
- Four port configurations for flexible connectivity
- Full performance in degraded or rebuild mode
- Flash-based cache protection protects against lost data during power or system failure
- More options for retrieving data from a failed drive with Data Recovery mode
- 50% faster rebuilds
- Efficient scalability with host-level RAID
- Maintain high priority workflows with tunable rebuilds
- RAID group partitioning for better management
UPC: 603175007272
In the Box
ATTO Technology ExpressSAS R644 4 Port-External/4-Port Internal 6 Gbps SAS/SATA RAID Adapter
- Full-Height Bracket
- 3 Year Warranty
| Ports | 4 external/4 internal |
| Bus Interface | x8 PCIe 2.0 |
| Form Factor | Low profile |
| Connectors | 1 Mini SAS (x4) SFF 8088 external, 1 Mini SAS (x4) SFF 8087 internal |
| Management Tools |
|
| External Connectivity | x4 Mini SAS connectors |
| RAID Features and Functionality |
|
| Operating System Support |
|
| Agency Approval |
|
| Compliance |
|
| Hardware |
|
| Storage |
|
| Operating Voltage | 9.6 W (typical) |
| Airflow | 150 lf/m minimum recommended |
| Dimensions (L x H) | 6.600 x 2.713" (16.764 x 6.891 cm) |
| Weight | Not specified by the manufacturer |
| Packaging Info | |
|---|---|
| Package Weight | 1.0 lb |
| Box Dimensions (LxWxH) | 9.8 x 7.2 x 2.1" |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.2 ★★★★★
Based on 13 reviews
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Product Reviews
★★★★★ 5
Amazon very professional and reliable
Style: 14x30x1
I was very pleased with the Filterbuy 14 30 1 and it fit great and very pleased with Amazon .They are very professional
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 13, 2026
★★★★★ 5
Great buy
Style: 20x25x2
Great fit, quality, construction, and less expensive than buying them at a regular store.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 20, 2026
★★★★★ 5
Fantastic Filters!!
Style: 20x25x1
Great filters for my 5 ton unit- well made and designed for airflow and hold up! Very well! MUCH BETTER than Lowes or HD FILTERS
Whistling stopped when I changed to the filters!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 9, 2026
★★★★★ 5
A lot of quality filters for little cost.
Style: 16x20x1, Style: 16x20x1
Been using these for months, great quality. No issues what so ever. I compared price to the 2 main big box stores and this is the best for your bucks. You get a lot more and they are of the same quality. I used to get mine from a big box store with military discount of 10% and this is still a better deal. They fit exactly like the filter I took out, so size is the same. I live FL and run my AC constantly. These last about 2-3 months each. They do no lose their rigidity. They are built with very high quality material. They catch a lot of dust, you can see how dirty they are when replaced.
PROS
- great quality and last 2-3 months in my AC running constantly
- you get a lot for your money when compared to the big box stores
- catch a lot of dirt, filters are really dirty after use
- very rigid which makes it easy to installation
- reinforced wire mesh
CONS
- None
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 31, 2026
★★★★★ 5
Top quality filters at a good price.
Style: 20x30x1
These filters are good quality. They are reinforced and hold their shape. They fit perfectly in my filter holder.
The thing I like is that the filters were bundled together and shipped in a sturdy box. Other filters I have ordered showed up in a flimsy box and were damaged.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 22, 2026
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