Customer ticket
“Our host in rack A05 stopped responding around 02:20. We can’t SSH in and it’s not answering pings. Nothing changed on our side. Please check the hardware, this is production.”
Northwind Systems · SLA response 30 min · Opened 02:31
Live now13 missions · start free, no account
Interactive
Datacenter
Training
Interactive training for beginners and interview prep for Amazon, Microsoft, and Google: the decisions and troubleshooting a junior data center technician faces every day.
Preparing candidates for careers in
- Digital Realty
Datacenter Training is an independent training platform. We are not affiliated with, endorsed by, or partnered with any of the companies listed above. Their names appear only to describe the kind of roles this training prepares you for.
Your shift
You work inside a running facility.
You are on shift in Hall H1: a queue with a ticket in it, a rack in front of you, and a mentor who reviews the order you did things in. This is the mission console, as it looks mid-shift.
- Missions at launch
- 13
- Skill topics tracked
- 14
- Minute interview sprint
- 120
- Videos to sit through
- 0
H1 · DR-1 · Rack A05
02:47
Current ticket
P1INC-4417 · Opened 02:31
“One of our servers dropped off the network about twenty minutes ago. Can someone take a look? It’s the one in rack A05.”
Physical layerNo SSHCustomer waiting
Learning path
7 / 13missions
Next: M8 · Documentation and DCIM
≈ 3 h to complete58%
Rack A05 · live
U22 faultFeedback · Tom
Before you touch anything: which TOR-A port serves the dead server?
Your call
Port 12: link LED dark
Port 07: link LED green
Right, dark link and no front-panel power. It is power, not network. Check the B feed first.
Mission progress
Scene 3 / 5 · 12 of 16 pts
Gap diagnosis
- Power distributionsolid
- Fibre opticsshaky
- Documentationgap
Weakest topic feeds your next recommended mission.
Mission console · product preview
How it works
You find the fault yourself. Nothing is announced.
The same four beats as a real shift: a ticket, a decision, a review, a record. Not lessons to watch. Missions to solve.
- 01TICKET OPENED
Receive a realistic ticket
A customer request lands in your queue with a severity, a site, a cage and a deadline. Everything else you have to find out yourself.
- 02HANDS ON
Find the fault yourself
Read the LEDs, check the feeds, trace the circuit, decide what to touch next. Every choice is scored on the spot, including what you do first.
- 03REVIEW
Get your method reviewed
Every call you make gets a comment, not just the outcome. Safety first, then method, then the note you leave for the next shift.
- 04READY
Become interview ready
Your gap diagnosis turns into talking points you can defend in a hiring loop, backed by missions you have actually finished.
The first mission needs no account.
Enter the trainingMission preview
This is a mission. Work it.
A P1 from a real-shaped customer, on a real rack, with built-in feedback on the order you choose. Tick the steps to see how the console responds.
P1 · INC-4417H1 · DR-1 · Rack A05 · U22
0/6 steps
Checklist
Rack A05
U22 faultU = rack unit, counted from the bottom · TOR = top-of-rack switch · PDU A/B = two independent power feeds
Feedback · Tom
Safety first. Tell me what you do before you open the cabinet.
The ticket closes clean when every step is done, and the order you tick them in counts.
A taste of the flow. The real missions grade every decision across twenty interaction types, from rack clicks to a simulated terminal.
What you get
The skills you leave with,
and the method that builds them.
Every capability exists because a technician needs it in week one, not because it looked good on a feature list.
Interactive missions
13 missions at launchEvery lesson opens as a job in the queue, not a chapter. You read the ticket, decide what to touch, and live with the consequences of the order you chose.
Evidence-based learning
Competency-first designDesigned around active practice, realistic decisions, explanatory feedback, retrieval and transfer, not passive reading or repetitive quiz questions. Every mission starts from the competency it has to build and works backward to the task that proves it.
Guided feedback
On every decisionEvery decision gets an immediate, built-in review: what was right, what was risky, and what the strong answer sounds like, never handed to you before you have tried.
Realistic tickets
Vague, urgent, incompleteWritten the way customers actually write them: vague, urgent, and missing the one detail you need. Learn to ask for it.
Rack & stack
42U elevationsMeasure U-height, plan the elevation, mount rails, manage weight and airflow, and label everything before you close the ticket.
Cross connects
MMR to cageTrace a circuit from cage to meet-me room. Single mode versus multimode, LC and MPO, patch panel positions, and the paperwork.
Power systems
A/B redundancyA/B feeds, PDU load balancing, breaker sizing, and what to do the second a redundant path drops during maintenance.
Hardware break-fix
Mission 13A server goes dark: triage power, link and hardware in order, swap the failed drive hot, and write the RMA notes that keep asset records true.
Simulated terminal
Missions 9, 10 & 13Type real commands (df -h, ip a, traceroute) into a simulated shell. Every line is graded, with the reasoning behind each verdict.
Interview preparation
Open from day oneOpen from day one: safety judgement, troubleshooting order, and a strong-answer comparison, plus a flashcard deck built from your runs.
Progress tracking
Gap diagnosisA traffic light per topic (solid, shaky, gap) instead of a completion percentage. See exactly which competency needs another run.
Interview flashcards
Built from your workPassing a mission (or logging the mistake it warns about) unlocks the matching interview flashcard. Due cards resurface on a spaced-repetition schedule: after 1, 3, 7 and 16 days.
Field notes
Learn the job before you have it.
Practical guides to the work itself, written the way we would explain it to someone starting Monday.
- Career9 min read
How to become a Data Center Technician
What the job actually involves, what employers screen for, and a realistic path into your first technician role with no prior data center experience.
- Interviews11 min read
The Data Center Technician interview guide
The structure of a technician hiring loop, the scenario questions that decide it, and how to answer them without sounding rehearsed.
- Fundamentals8 min read
Rack and stack explained
Rack units, rails, elevations, weight distribution, airflow and labelling; the full sequence of a clean hardware installation.
FAQ
Questions people actually ask.
Something we have not covered? Contact the team. Replies come from the people building it, usually within a day.
Contact
Talk to the team.
A question, a partnership, something broken? Write us. Replies come from the people building the product.
Newsletter · New specializations
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Ready to walk the floor?
Thirteen missions, a simulated hall and a mentor who reviews your method. Start free in your browser. The first mission needs no account.