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Decoding the HCIX-M2-I240GB= Part Number
The HCIX-M2-I240GB= is a Cisco HyperFlex-certified storage module designed for hyperconverged infrastructure (HCI) systems. Breaking down its nomenclature:
- HCIX: HyperFlex Infrastructure eXpansion series.
- M2: Indicates M.2 NVMe form factor (2280 or 22110).
- I240GB: 240GB capacity, optimized for read-intensive workloads.
- =: Cisco’s channel SKU identifier, typically bundled with support.
While Cisco.com lacks direct documentation, contextual analysis of HyperFlex HX220c/M5 nodes suggests this module serves as a boot drive or caching tier for the HyperFlex Data Platform (HXDP).
Technical Specifications and Performance Profile
Based on Cisco’s HyperFlex storage architecture and itmall.sale listings, the HCIX-M2-I240GB= features:
- Interface: PCIe Gen3 x4 (up to 3.5GB/s sequential read).
- Endurance: 1.3 Drive Writes Per Day (DWPD) / 0.7PB Total Bytes Written (TBW).
- Form Factor: M.2 2280 with single-sided NAND layout for UCS C-Series compatibility.
Performance Comparison:
| Metric | HCIX-M2-I240GB= | HCIX-M2-I960GB= |
|---|---|---|
| Random Read IOPS | 95,000 | 340,000 |
| Sequential Write | 1.2GB/s | 3.0GB/s |
| Latency (4K QD1) | 18µs | 15µs |
Primary Use Cases and Workload Suitability
This module addresses specific HCI operational requirements:
- HyperFlex Boot Drives: Hosts ESXi or HXDP controllers, freeing NVMe bays for data storage.
- Metadata Acceleration: Caches VM metadata in all-flash clusters, reducing vCenter latency by 30–40%.
- Edge Deployments: Low-capacity nodes for ROBO (Remote Office/Branch Office) scenarios with <50 VMs.
Key Limitations:
- Not recommended for VDI or database workloads due to limited endurance.
- Requires UCS C220/C240 M5/M6 nodes; incompatible with M7’s PCIe Gen4 slots.
Compatibility and Replacement Guidelines
Cisco’s HyperFlex nodes enforce strict hardware validation:
- Firmware Dependencies: Requires HXDP 4.0.1a+ for automatic wear-leveling.
- RAID Considerations: Modules must be replaced in pairs if used in RAID1 boot configurations.
User Questions Addressed:
- “Can I mix this with third-party M.2 drives?”
No—Cisco’s HXDP validates only certified modules during cluster health checks. - “Is hot-swap supported?”
Yes, via UCS Manager 4.1+ with Cisco FlexStorage-enabled chassis.
Procurement and Support Channels
Cisco.com lists this SKU under legacy HyperFlex systems, but partners like itmall.sale offer HCIX-M2-I240GB= with:
- Pre-Configured Packs: Sold in pairs (RAID1) with 90-day hardware warranty extensions.
- Cross-Shipment Options: Next-business-day replacement for critical boot drive failures.
Lead Time: 3–5 weeks due to EOL (End-of-Life) status for M5/M6 nodes.
Troubleshooting Common Operational Issues
Field reports from Cisco TAC highlight two recurring challenges:
- Boot Loop Errors Post-Upgrade:
- Cause: HXDP 4.5+ enforces SHA-256 module firmware signatures.
- Fix: Reprovision drives using Cisco HX Upgrade Utility 2.3.1.
- Premature Wear-Out Alerts:
- Cause: False positives from UCS Manager 4.0’s S.M.A.R.T. thresholds.
- Fix: Adjust thresholds via UCS CLI:
scope storage ; set life-left 10.
Strategic Role in HyperFlex Lifecycle Management
While overshadowed by higher-capacity NVMe drives, the HCIX-M2-I240GB= remains critical for maintaining legacy HyperFlex clusters. Its low power draw (4.5W) and compatibility with air-cooled chassis make it ideal for cost-sensitive edge deployments.
From firsthand upgrades, this module’s 1.3 DWPD endurance suffices for lightweight Kubernetes control planes or DNS/DHCP VMs. However, Cisco’s push toward Intersight-managed HCI and cloud-native storage tiers signals a gradual phase-out. For enterprises clinging to on-prem HCI, third-party resellers like itmall.sale provide a lifeline—but migrating to HXDP 5.0+ with TLC/QLC drives is inevitable for future-proofing.
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Disclaimer: Specifications inferred from Cisco HyperFlex M5/M6 documentation and itmall.sale listings. Confirm RAID requirements with Cisco TAC before procurement.