​HCI-SAS-M7T= Overview: Purpose and Technical Specifications​

The ​​HCI-SAS-M7T=​​ is a ​​SAS (Serial Attached SCSI) storage expansion module​​ designed for Cisco’s hyper-converged infrastructure (HCI) platforms, such as HyperFlex. This hardware component enables ​​high-density storage scaling​​ by connecting additional drives or JBOD (Just a Bunch of Disks) enclosures to Cisco UCS servers. Key specifications include:

  • ​12Gb/s SAS interface​​: Supports bandwidth-intensive workloads like databases and video analytics.
  • ​Dual-port architecture​​: Ensures redundancy and failover capabilities for mission-critical applications.
  • ​Compatibility​​: Validated for Cisco UCS C240 M5/M6 and similar rack servers.

​Why the HCI-SAS-M7T= Is Critical for Scalable HCI Deployments​

Cisco HyperFlex relies on flexible storage expansion to maintain performance as data grows. The HCI-SAS-M7T= addresses three primary challenges:

  1. ​Storage Density​​: Allows enterprises to add ​​up to 24 SAS/SATA drives per module​​, reducing reliance on external SAN/NAS.
  2. ​Latency Reduction​​: Direct-attached SAS minimizes I/O bottlenecks compared to network-based storage.
  3. ​Cost Efficiency​​: Eliminates the need for expensive Fibre Channel switches in small-to-mid-sized clusters.

​HCI-SAS-M7T= vs. Alternatives: Key Features Compared​

Feature HCI-SAS-M7T= PCIe NVMe Storage Controllers
Interface 12Gb/s SAS PCIe 4.0 (16GT/s)
Use Case Mixed HDD/SSD scaling All-flash arrays
Max Throughput 1,200MB/s per port 3,500MB/s+
Cost per TB Lower Higher
Ideal Workload Backup, cold data Real-time analytics

This table highlights the module’s role in ​​cost-sensitive, high-capacity storage tiering​​ rather than ultra-low-latency scenarios.


​Addressing Common Deployment Questions​

​Q: Can the HCI-SAS-M7T= support SSD drives?​
A: Yes. It is backward-compatible with ​​SAS/SATA HDDs and SSDs​​, but performance will align with the slowest connected drive type.

​Q: Is firmware customization required for Cisco integration?​
A: No. The module ships with ​​Cisco UCS Manager-compatible firmware​​ for plug-and-play installation.

​Q: How does redundancy work with dual ports?​
A: If one SAS controller fails, the second port automatically reroutes data via multipath I/O, ensuring ​​zero application downtime​​.


​Where to Purchase the HCI-SAS-M7T=​

For organizations prioritizing Cisco-certified hardware, “HCI-SAS-M7T=” is available through itmall.sale. The platform offers verified new and refurbished modules, complete with Cisco’s limited hardware warranty.


​Practical Insights: When to Choose SAS over NVMe​

While NVMe dominates high-performance use cases, the HCI-SAS-M7T= remains indispensable for budget-conscious HCI expansions. In hybrid environments where ​​90% of data is rarely accessed​​ (e.g., compliance archives), SAS delivers the optimal balance of capacity, reliability, and cost. For enterprises migrating from legacy SANs, this module bridges the gap between traditional storage and hyper-converged agility—without overhauling existing drive investments.

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