In November 2017, Dell EMC brought its PowerEdge 14th-generation server platform to two hyper-converged infrastructure (HCI) families: VxRail, built around VMware vSAN, and XC Series, which paired PowerEdge hardware with Nutanix software. The update shared a newer hardware foundation, but the two appliance lines retained different software ecosystems and deployment paths. Dell announced performance gains at launch; those figures were vendor claims, not independent test results or present-day buying guidance.
What the 2017 update changed
Dell EMC announced on November 30, 2017 that VxRail and XC Series appliances would use PowerEdge 14th-generation servers. The server refresh brought higher core counts, faster clock speeds, more memory channels and faster memory, according to Dell. Dell said the upgraded HCI appliances offered up to 1.7 times more processing power and up to 62% higher internal bandwidth than their predecessors. Those are launch claims; Dell’s announcement does not establish that every model or configuration achieved those ceilings.
The update was more than a generic server refresh: Dell offered the 14G hardware as part of two appliance families with different software stacks. The practical distinction was which ecosystem and deployment model an organization wanted, rather than a simple ranking of one appliance as faster than the other.
VxRail and XC Series: two different appliance paths
| Area | VxRail | XC Series |
|---|---|---|
| Software foundation | VMware vSAN; described by Dell as jointly engineered with VMware. | Nutanix software on PowerEdge hardware; presented by Dell as hypervisor agnostic. |
| Launch positioning | VMware environments, configuration flexibility and demanding workloads. | Compute-intensive and storage-dense workloads, with some virtual desktop infrastructure (VDI) use cases. |
| Published launch performance claims | Up to 2x more IOPS, more than 2x faster response times, and nine times more predictable response times sustained below one millisecond. | Up to 50% more cores per appliance and up to 93% more compute capability for storage-density-focused workloads. |
All performance figures in the table are Dell EMC’s 2017 claims and depend on the launch comparisons and configurations; they are not independent measurements. The announcement does not specify enough test detail to treat the figures as a direct, like-for-like comparison between VxRail and XC Series.
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What Dell’s performance claims mean—and do not mean
Dell attributed the gains to the 14G platform’s processor and memory improvements. It also made product-specific claims: VxRail was said to deliver up to twice the IOPS and more than twice the response-speed improvement, plus nine times more predictable response times sustained below one millisecond. For XC Series, Dell claimed up to 50% more cores per appliance and up to 93% more compute capability in storage-density-focused workloads.
Read each figure as a ceiling or comparison reported by Dell, not a guarantee for every appliance. The announcement does not provide a complete independent benchmark methodology or enough configuration detail to predict results for a particular workload. Actual performance depends on the selected node, storage media, networking, software and workload; validate those specifics against the environment being planned.
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Which 14G hardware was involved?
Dell’s PowerEdge 14G server portfolio included the R640, R740, R740xd, R940 and C6420. Later Dell documentation identifies the VxRail E560, P570 and V570 as 14G-era node models. These names matter because an HCI appliance is a validated combination of hardware and software, not simply a generic server with an HCI label.
A PowerEdge R740 listing, for example, identifies a server model, not a turnkey VxRail or XC appliance. Confirm the exact appliance or node model, storage and media, networking, any accelerators, firmware and software compatibility, and validated configuration before treating hardware as suitable for an HCI deployment.
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Historical availability is not current buying guidance
At the November 30, 2017 announcement, Dell said the XC640, XC740xd and XC740 were generally available. VxRail systems were orderable then and scheduled for general availability on December 12, 2017. These statements describe the launch period only; they do not establish current inventory, support status or orderability.
Dell’s later technical material discusses VxRail systems based on 16th-generation PowerEdge servers and compares them with 14G-era models. That places the 14G announcement in a historical generation transition, not as a description of Dell’s current server generation. For a deployment or replacement decision, check current Dell support and configuration information, software compatibility, availability in your region and total cost for the specific environment.
Quick Recap
Sources
- Dell EMC: 14th-generation PowerEdge servers for VxRail and XC Series, November 30, 2017
- Dell EMC: PowerEdge 14th-generation server portfolio
- Dell EMC technical blog: later VxRail generation context
- Nutanix: hyperconverged infrastructure overview
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