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Technical Profile and Design Intent The HCI-PSUV2...
Decoding the HCI-SD76TKA1X-EV= Storage Component
The HCI-SD76TKA1X-EV= is a 7.6TB enterprise-grade SATA SSD engineered for Cisco HyperFlex HX-Series hyperconverged infrastructure systems. Designed for high-density workloads, this drive prioritizes storage efficiency over raw speed, making it ideal for archival, backup, and large-scale virtual desktop infrastructure (VDI) deployments. Unlike NVMe-based HyperFlex drives, it operates on SATA III interfaces, balancing cost and capacity for data-heavy environments.
Technical Specifications and Target Workloads
Capacity and Endurance
- 7.68TB usable storage (8TB raw) with 3D TLC NAND technology
- 1 DWPD (Drive Writes Per Day) endurance over 5 years
Performance Profile
- Sequential Read/Write: 550MB/s (read), 520MB/s (write)
- Random 4K IOPS: 95K (read), 24K (write)
Optimal Use Cases
- Secondary storage for HyperFlex clusters (e.g., VMware vSAN datastores)
- Long-term retention of logs, compliance data, or medical imaging archives
- Disaster recovery repositories with infrequent access
Compatibility and HyperFlex Node Support
The HCI-SD76TKA1X-EV= is validated for specific Cisco HyperFlex configurations:
- Supported Nodes: HX220c M5, HX240c M5, and HXAF4C-M5 All-Flash systems
- Unsupported Scenarios:
- HyperFlex Edge clusters (M.2-only bays)
- First-generation HX220c M4 nodes (SAS controller limitations)
- Maximum Drives per Chassis: 12 drives in 2U HX240c nodes
Why Choose SATA SSDs over NVMe in HyperFlex?
Cost per Terabyte Advantage
At ~$0.30/GB, the HCI-SD76TKA1X-EV= is 60% cheaper than Cisco’s NVMe alternatives (e.g., HCI-NVMEG4-M1536=), making it economical for bulk storage.
Power Efficiency
SATA SSDs consume 25% less power per drive compared to NVMe counterparts—critical for multi-petabyte deployments.
Deployment Strategies for Maximum ROI
Tiered Storage Policies
Pair NVMe drives (for active workloads) with HCI-SD76TKA1X-EV= drives (cold data) using HyperFlex’s adaptive tiering.
RAID Recommendations
- RAID 6: For archival data requiring dual parity protection
- Avoid mixing SATA and NVMe drives in the same storage pool
Purchasing and Warranty Considerations
Cisco sells the HCI-SD76TKA1X-EV= as a standalone upgrade, but ensure:
- HyperFlex software is updated to HXDP 4.0+ for SATA III optimization
- Sufficient drive bays are available (requires 2.5-inch hot-swap trays)
For guaranteed compatibility and Cisco-certified units, refer to the [“HCI-SD76TKA1X-EV=” link to (https://itmall.sale/product-category/cisco/).
Performance vs. Capacity: Trade-Off Analysis
| Metric | HCI-SD76TKA1X-EV= (SATA) | HCI-NVMEG4-M1536= (NVMe) |
|---|---|---|
| Cost per TB | $2,300 | $4,100 |
| Random Read IOPS | 95K | 1.2M |
| Sequential Throughput | 550MB/s | 7,000MB/s |
| Use Case Fit | Cold Data | Real-Time Analytics |
The SATA drive’s 7.68TB capacity allows 30% fewer drives per petabyte compared to 1.5TB NVMe modules, reducing rack space and management overhead.
Addressing Key User Concerns
Q: Can this drive handle SQL Server databases?
Only for read-heavy secondary databases (e.g., reporting). Avoid write-intensive OLTP workloads.
Q: Is hardware encryption supported?
Yes—it features FIPS 140-2 Level 1 encryption via Cisco’s SED (Self-Encrypting Drive) capability.
Q: What’s the mean time between failures (MTBF)?
2.5M hours, with SMART alerts for predictive replacement.
Final Assessment
While NVMe dominates performance discussions, the HCI-SD76TKA1X-EV= fills a strategic niche for enterprises needing affordable, high-density storage without sacrificing HyperFlex’s scalability. Its value shines in hybrid architectures where 80% of data is rarely accessed. However, verify workload patterns before deployment—underestimating I/O demands can lead to bottlenecks that negate cost savings.