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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 |
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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
4.0 ★★★★★
Based on 29 reviews
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Product Reviews
★★★★★ 5
Great pee pad holder
Pattern Name: Detachable high wall
This pee pad holder has made me and my pup’s life so much easier! It’s light, easy to clean, and works well with my pup! It’s a lifesaver when it’s really cold and rainy outside for my pup to have a dry place to go potty. Would recommend to all dog owners, especially those in apartments with small spaces.
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Reviewed in the United States on November 25, 2025
★★★★★ 4
Great
Pattern Name: Detachable high wall
Great quality, easy to clean, fit well the standard pee pad (24x24). Hopefully I can get my dog well trained to not have any accidents.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 2, 2026
★★★★★ 5
A Game Changer for Puppy Training!
Pattern Name: Detachable high wall
I recently purchased the PAWISE Dog Pee Pad Holder Tray with Splash Guard, and I have to say, it has made a significant difference in our puppy training routine!
First off, the size is perfect for my small to medium-sized dog. The 23.6-inch tray provides ample space for the puppy pads, and I've found that it holds them securely in place — no more slipping or sliding around, which is a major plus! The detachable high wall is a great feature, as it helps contain any messes or spills, keeping my floors clean. The splash guard really works; we had some initial worries about our puppy being a bit of a scatterer during pee time, but this tray has nearly eliminated those issues.
Cleaning it is a breeze. The tray is easy to wipe down, and since it’s designed to keep everything contained, I don’t have to spend a long time cleaning up after accidents. I also appreciate the durable material—it's clear that it's built to last.
One thing I didn't expect was how much my puppy took to it. He seemed to understand what it was for right away, which made the whole potty training process less stressful for both of us. The high-wall design gives him a sense of enclosure that I think he finds comforting.
Overall, I would highly recommend the PAWISE Dog Pee Pad Holder Tray for anyone who's in the midst of puppy training. It’s functional, easy to clean, and has made our indoor potty routine much more manageable. This product is definitely worth the investment!
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Reviewed in the United States on January 2, 2026
★★★★★ 5
Fur Family Necessity
Pattern Name: Detachable high wall
How have I gone so long without this in my life? I've struggled for a bit with my older dog and the messes he makes. He loves this potty pad and now I don't have to clean up as many messes as I once did. The holder cleans up easily and as long as he's not chewing on this, it should last a good long while.
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Reviewed in the United States on February 7, 2026
★★★★★ 2
Useless
Pattern Name: Detachable high wall
Our dog wouldn’t use it and decided to start chewing it 🤦🏽♂️
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Reviewed in the United States on November 13, 2025