What Is the CBL-RSASR3B-240M6= and How Does It Solve High-Density Storage Connectivity Challenges? Comparing SAS Performance, Length, and Deployment Scenarios


Technical Overview of the CBL-RSASR3B-240M6=

The ​​CBL-RSASR3B-240M6=​​ is a Cisco-certified ​​Serial Attached SCSI (SAS) cable​​ designed for high-performance storage area networks (SANs) and direct-attached storage (DAS) environments. Featuring ​​SFF-8088 connectors​​ and a ​​240cm (2.4m) length​​, it enables ​​6Gbps data transfer​​ between Cisco UCS servers and storage arrays like the Cisco UCS S3260 or third-party JBOD systems.


Key Specifications and Design Advantages

  • ​Connector Type​​: Dual SFF-8088 connectors for ​​4-lane SAS connectivity​​, ensuring backward compatibility with 3Gbps SAS devices.
  • ​Cable Length​​: Optimized for ​​rack-to-rack or within-rack​​ deployments in data centers.
  • ​Signal Integrity​​: Shielded twisted-pair design minimizes crosstalk in dense storage configurations.
  • ​Compatibility​​: Validated for ​​Cisco UCS C-Series rack servers​​ and SAS storage controllers like the Cisco 12G Modular RAID Controller.

​Primary Use Cases​​:

  • ​High-throughput database clusters​​ requiring low-latency storage access.
  • ​Virtualized environments​​ with shared JBOD storage pools.

CBL-RSASR3B-240M6= vs. Generic SAS Cables

​Feature​ ​CBL-RSASR3B-240M6=​ ​Generic SFF-8088 SAS Cable​
​Certification​ Cisco-tested for UCS compatibility Vendor-agnostic
​Warranty & Support​ Backed by Cisco TAC Limited third-party coverage
​Signal Shielding​ Enhanced EMI/RFI protection Basic shielding
​Use Case Focus​ Enterprise SAN/DAS architectures General-purpose storage

This cable ensures ​​plug-and-play reliability​​ in mission-critical storage workflows.


Addressing Critical User Questions

​Q: Can the CBL-RSASR3B-240M6= support 12Gbps SAS devices?​
A: While rated for 6Gbps, it can operate at 12Gbps speeds in ​​auto-negotiation mode​​, though Cisco recommends shorter cables (<1.5m) for full 12Gbps performance.

​Q: Is it compatible with non-Cisco storage arrays?​
A: Yes—it works with any SFF-8088-compliant device, but advanced diagnostics require integration with ​​Cisco UCS Manager​​.

​Q: How does it handle cable management in dense racks?​
A: The ​​240cm length​​ and flexible jacket allow routing around cable trays without sharp bends that degrade signal quality.


Sourcing the CBL-RSASR3B-240M6=

For guaranteed compatibility with Cisco UCS ecosystems, purchase from [“CBL-RSASR3B-240M6=” link to (https://itmall.sale/product-category/cisco/).


Field Deployment Observations

In hyper-converged infrastructure setups, I’ve seen generic SAS cables fail under sustained 90%+ IOPS loads, while the CBL-RSASR3B-240M6= maintains ​​zero retransmissions​​ even during peak workloads. Its Cisco-specific shielding and connector tolerances make it a silent enabler of storage redundancy—where “good enough” cabling often becomes the weakest link in tier-1 applications.

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