In 2013, I joined IBM Pakistan as an IT specialist. Where I used to work as a system manager, the guy who used to work with Power Systems, with OSAIX and IBM storage. Then, I was shifted to IBM Europe in the Czech Republic. There's a CIC center in Brno, where I've worked with IBM as well, but as a third-level support guy. Now I'm based in Qatar, and worked for government organization. I work as a system specialist for the Power Systems and the unit support as well, the operation stuff. I worked for eight years or more before this AIX and Power Systems and storage.
I worked as an operations guy for whole IT operations and as well as the implementation. Because there were so many clients from the banking sector, from the government sector, and telecom industry, they mostly have the billing systems on the Power Systems.
Now, I work as a unified system specialist.
IBM Power Systems is mostly used for specific IBM products because the system AIX is actually propriety of IBM. You cannot install it on any other platform. You can use it in different domains, like SAP HANA, do rack data and rack warehouses. Users in the telecommunication use it. They were using as an IBM Middleware product. An IBM Middleware product was being used solely on the Power Systems.
IBM has started supporting Red Hat, so people use Red Hat and some clients do put it in a cloud environment as well. The core baking system runs on that because most of the core banking like Oracle Financials are being used on this.
The use case depends on what the customer requirement is.
I started working with Power4 back in 2012, and almost Power4, Power5, 6, 7, 8, and now I am working with Power9 as well.
The banking environment was running the physical servers of like five to six stacks. The utilization of the physical space they were renting out reduced. It enables them to save space. Because when you're leasing, space counts. They were saving quite a healthy amount of money.
The maintenance of the physical hardware is more complex because there were different systems running and you need to go directly into the data center to use it. Now, when it comes to Power Systems, they were using the virtual system and were sitting on centers to verify if there was a hardware failure.
It also saves the cost of having one person at the data center solely looking at data systems. This also saves costs.
When you're using five stack or six stacks, the power utilization of those servers will be high as compared to the two stacks. If you need to add more CPU resources, compute resources to the server, adding those to a physical server is sometimes impossible because there is limited capacity. But when it comes to IBM Power, they have high compute resources. You can add it and you can utilize it. It comes with five or six years of planning. If you have planning and a good planner, then you can use the system for the next four, five years, and that can easily fulfill your requirements.