Overview and System Install
Hey! So, I have been asked to talk about Data Center Environment and what the day to day task usually involves.
I have worked in the DC environment for a long part of my Career. So, this will be based on my experience and limited to my knowledge. This is obviously not everything that happens in a DC but I will cover most of the things I know about and you can add what you know in the comment sections.
In this section of my blog (Data Center Category) I will be talking about the following things.
1. What is Data Center and what is the purpose of it
2. What kind of skills are needed to work in a DC / What you will be doing in DC
3. Work of a DC Technician (we will be going thru a process of completing a hypothetical task)
4. And more as I remember
As always everything in this is for education and reference purpose and I can not be held responsible or liable if something goes wrong while following the steps mentioned here. So, if you are troubleshooting a system and the whole DC network goes down you cannot sue/blame me for it.
Now that important thing is out of the way! Let’s get started.
What is Data Center and what is its purpose:
In simple words Data Center is a central location where most of the companies run their IT infrastructure from. So, all of a company’s IT infrastructure which includes servers, network, web-servers, databases, backups, etc.. are located in the DC.
Most DC are run by third party where your company rent spaces and are called co-location or just colo. You can have multiple companies in a single DC. The benefit of this is that, when you rent the space in a DC you can just focus on your infrastructure and work while the facilities(DC owners) will handle the basics like providing power, network connection, cooling, backup generators in-case the power goes out and many other things. Of-course these resources are not free (you still need to pay for the electricity you use) but you will be free of the hassle of managing and maintaining all these systems. So, now you can just focus on getting the server you need, rack them, connect them to the internet and start/run your business.
Most companies also have multiple co-locations for redundancy and other business purposes.
What kind of skills (roles) are needed to work in a Data Center:
You will need people with all kind of skills to operate a Data Center and expecting one person to be able to run the whole thing is not practical unless you just have few servers and networking devices.
So, these are the skills and titles of positions in most data centers (or at least that I can remember J)
1. Data center Technicians:
These are the foot soldiers and do most of the physical work of the data center which includes receiving equipment, racking & stacking, running cables, running power, basic configurations, etc.
2. Systems Engineers/Administrators:
These guys/gals are responsible for managing the servers after they are racked and stacked which includes installing OS, managing the OS and getting the system ready for the applications to run in testing or production environment. This task is less physical but very tedious and time consuming.
3. Network Engineers:
These guys/gals are responsible for maintaining the network health of the data center environment. If you anything is connected to the network but its not working Network Engineers will have to figure out why and resolve this issue. If the network is down then the systems on that network won’t be up so the System Administrators can’t get their jobs done, if the site is in production then the company will lose money. So, this is also a very important role.
4. Data center Manager:
Data center Managers are responsible for the day-to-day operation of the data center. They make sure everything is running smoothly in the DC and allocate people on tasks as needed. In most cases they are also responsible for keeping track of what is where in the DC and provided space allocation when needed by the DC Architect.
5. Data center Architect:
The Data Center Architect is responsible for designing the data center (not the physical building). DC Architect will work with multiple teams like the networking team, Systems team, DC manager and collect information about what space is available what is needed for a particular project. Then he/she will design and create a blueprint for the physical layout of the devices and connections as needed. There is much more but this the basic stuff they do.
There are many other people involved in operating a DC like security engineer, HVAC tech, electrician, logistics person, etc.
So, as you can see there is no one particular skill but a set of skills that you will need in a data center environment. While is smaller companies 1 -2 people might be able to juggle most of these roles in larger organization each role will have a team of people.
Work of a DC Technician (we will be going thru a process of completing a hypothetical task)
This is a typical scenario in a DC for the DC Technician. You are assigned a ticket that says a set of servers, networking gear and storage equipment are on its way and need to be racked and stacked and handed over to the customer.
In an event like this all the physical locations for the systems are already assigned and documented either in the ticket or a separate installation document. Your task is to follow the document and install the system at those locations, cable the network connections, configure some basic configuration on the switches, systems (iLO, iDrac, BIOS, etc). The steps are as follows:
1. So, the first step even before the equipment arrives onsite is vetting the installation document. You will have to go and physically verify if the allocated locations, switch ports and enough power are available. Architects design the layout based on data from some database that tells them what rack and RU locations are available, but sometimes the databases are not up to date and the locations overlap.
If you find any discrepancies you will need to contact your manager and have this error corrected before you can proceed.
2. Receive the equipment, inspect the shipment for any damages and inventory. If you find any damages on the shipment you will need to notify your manager so he/she can escalate it. If no damages are found then you can start the inventory process (you don’t want to lose you equipment in the DC) and then tag them with asset tags or similar if needed.
3. Transport the equipment to the allocated location and rack it. Usually in DC you are not allowed to bring in cardboard, wooden pallets and similar stuff to the floor where the equipment are running.
4. Once all of the equipment are racked and stacked connect all the network connections from the system to the switches as allocated. Usually in a well-designed DC you will have a TOR (top of rack) switch or patch panel that goes to a switch. So, you will just need to connect the systems in that rack to the TOR switch and then connect that switch to the core of your network (core switch).
Note: The connections from the TOR switch to the systems in the rack are referred as ‘Southbound Connections’ and the connection to the core switches are referred as ‘Northbound Connections’
5. Once the connections are made you will need to do some kind of configuration for the systems to be accessible in the network for the System Administration team to access it and install required OS/applications.
At the lease you will have to configure all the systems out-of-band (iLO, iDrac, IMM) IP addresses and configure the newly installed switches for the network team to access so they can run their scripts and configure the switch fully.
6. After all of this is done the technician closes his part of the ticket and any other team responsible for the next step takes over.
The above mentioned is pretty much one of the many task handled by DC technicians. DC technicians are also responsible for day to day system troubleshooting and fixing. Like replacing bad DIMM, hard drives, failed components of a system, etc.
This is obviously not everything about the data center but kind of a summary. In the next blog we will look into how to configure a Cisco switch with basic settings for the customer to access it, configure HP iLO, DELL iDrac and Lenovo IMM with customer requested settings.
As always please let me know what you think and have any suggestions.
Cheers.
HelpfulAdmin
Key Insights
A data center is the foundation of modern IT operations, hosting critical servers, networks, and business systems.
Co-location facilities allow companies to focus on their infrastructure while outsourcing power, cooling, and physical security.
Effective data center operations depend on collaboration among technicians, system administrators, network engineers, managers, and architects.
Data center technicians play a vital role by handling equipment installation, cabling, and initial system configuration.
Accurate documentation and pre-installation verification help prevent space, power, and connectivity conflicts.
Proper equipment handling, inventory tracking, and inspection reduce the risk of deployment issues.
Structured workflows and standardized processes improve efficiency, reliability, and uptime.
Attention to detail and strong coordination are essential for maintaining stable and scalable data center environments.