Milan Jezdik

Based on a business decision to close one of the main DC sites in the UK, I had to power off and relocate 40+ racks and all related services to a new site.

My role was to prepare a high-level and detailed relocation plan for all services (100+). I was also responsible for actioning the plan with my team of four engineers. I was in charge of designing, purchasing, and delivering the new infrastructure, relocating the services, working closely with service owners, and changing the team. I had to manage my team to split the project work and the BAU work in order to keep on track with the tight schedule.

I am proud I managed to vacate the old DC site in less than nine months. The project delivered a new, completely virtualized, resilient, secure, scalable, and power-efficient infrastructure providing high availability and resiliency to all relocated services.

The new site uses a hyper-converged infrastructure (Nutanix and VMware) running on a 10Gbps network (Cisco, Dell, Juniper, Citrix).

I was tasked with building a new DR site in a distant location that would support Claranet Group Business Continuity Plans.

I was in charge of designing, purchasing, and delivering the new geographically dislocated DR site in one of Claranet's data centers in Germany. I managed to prepare the whole site remotely with only a little help from the local DC team (patching and configuring the remote access cards on the blades).

The DR site is fully virtualized, including the networking (Cisco CSR, Juniper Firefly, and Cintrix NetScaler VPX). The project delivered DR plans and HA solutions (in an active-active mode where possible) for business-critical applications such as Exchange, Lync, internal CRM, and customer portals.

Based on the cost analysis, a decision was made to virtualize the whole Boltblue Ltd. infrastructure into the AWS cloud. I was tasked with the preparation of the new AWS environment and moving the physical infrastructure into the cloud. One of the most challenging tasks on this project was to migrate an Oracle 10i 32-bit instance into the 64-bit virtual environment. This project utilizes AWS services such as EC2 and S3 and CentOS-based images running Java/Apache/Tomcat application stack.

The conversion of the PHP source code and underlying operating system into supported (LTS) versions of PHP and OS.

The migration required testing and cooperation with the development team. While working on the transition, I also automated the server build process and deployment (CI/CD).