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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
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- 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 |
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| External Connectivity | x4 Mini SAS connectors |
| RAID Features and Functionality |
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| Operating System Support |
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| Agency Approval |
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| Compliance |
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| Hardware |
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| Storage |
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| 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
4.9 ★★★★★
Based on 5 reviews
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Product Reviews
★★★★★ 5
Works well, measurement markings holding up
Color: 01_ Silver 1pc
This is a nice espresso shot cup. It's wide enough to catch both espresso streams coming down from the portafilter. I really like the measurement markings on the inside. I was concerned when I bought it that the markings might come off over time. I've had it for several months, and so far the marking are holding up well even when run through the dishwasher.
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Reviewed in the United States on January 6, 2026
★★★★★ 5
Efficient
Color: 01_ Silver 1pc
This cup holds two shots and then some. It fits perfectly under to catch the espresso. The material is durable and it’s easy to clean. I recommend this!
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Reviewed in the United States on May 13, 2026
★★★★★ 5
Does what it's supposed to do
Color: 01_ Silver 1pc
Works well for a double espresso. Small but large enough to fit under two spouts.
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Reviewed in the United States on March 17, 2026
★★★★★ 5
Works
Color: 01_ Silver 1pc
Handy for measuring espresso and beans.
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Reviewed in the United States on May 18, 2026
★★★★★ 4
Good quality for small amounts of espresso
Color: 02_ Black 1pc
So truth be told I dont even use it because I actually needed something that held a lot more than what this holds but it is really nice.
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Reviewed in the United States on April 17, 2026