Data Center Engineering & Infrastructure Leader
Mark
Donnelly
I design, build, and run data center infrastructure, from site selection and power to the automation on top, and I lead the engineers who do it with me.
At a glance
My work spans data center architecture, power infrastructure, capacity planning, network connectivity, large-scale migrations, UNIX/Linux systems, automation, and observability.
What I do
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Buildouts & site designWholesale and retail, from site selection to live racks
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Power & capacityFeeders, busways, PDUs, and the plan behind them
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MigrationsServers, storage, and whole sites
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ConnectivityStructured Cabling, Dark Fiber, and cross-connects
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Automation & observabilityPython, Ansible, Prometheus, DCIM
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Standards & teamsConsistency, and engineers who stay
What I know
- FacilitiesPower, Cooling, Conveyance
- Physical PlantContainment, Racks, PDUs
- Compute & StorageHashiCorp, GPUs, Ceph, Proxmox
- ConnectivityStructured Cabling, Dark Fiber, cross-connects
- Operating SystemsDebian, Ubuntu, RHEL
- AutomationPython, Ansible, PXE/iPXE
- ObservabilityPrometheus, Grafana, Alertmanager, DCIM, BMS
- HardwareSupermicro, Dell, HP, Servertech, Opengear, ZPE, Starline, Corning, LeGrand
The Homelab
Connecting…
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Staging
Nomad cluster
- Nodes
- –
- CPU
- –GHz
- Memory
- –GB
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Internal prod
Nomad cluster
- Nodes
- –
- CPU
- –GHz
- Memory
- –GB
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External prod
Nomad cluster
- Nodes
- –
- CPU
- –GHz
- Memory
- –GB
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Game servers
- Servers running
- –
Power
Metered circuits only
- Total draw
- –kW
Local AI
Workstation
- CPU
- EPYC 7282
- GPU
- 40GB VRAM
- Memory
- 256GB
- Storage
- 24TB NVMe
2× RTX A4500, open models on vLLM
- Model
- –
- Tokens today
- –
Contact
Hiring, or have an interesting problem? File it here, and I can send a full resume if you need one.