Data warehouse installations take lots of time and detailed planning. Once they are installed, they are not usually updated, so they are not something you want to have to worry about replacing again anytime soon. Getting it right the first time solves lots of headaches down the line.
When looking for data warehouse installations, the physical install for the data warehouse is different based on if you want to use on-premise installations or cloud-based architecture. With data warehouses on-premise installations, you have server racks, cooling hardware, and the rest of the physical pieces of hardware that go along with data storage. You will need to find an adequate power supply, backup generators, and data storage hardware like environmental control so that the data center does not overheat.
With warehouse cloud installations, you won’t have as many physical burdens, but you will have to make many important decisions about configuration, security, and data organization. The physical installation for data warehouse cloud-based systems involves installation of the cloud, configuration of security and control access, and installation of data pipelines for the cloud.
The Building Stage
The first thing left to do before starting an installation project is to put together an architect’s plan. First, try to understand the architecture of data transfer in the organization and into the data warehouse. From what sources are you pulling data and how often is it needed to update? How often do you need to perform queries and how? These types of questions are not hypothetical, they help define the needed requirements for hardware or the necessary cloud service tiers.
When businesses do not take growth into consideration when doing storage capacity planning, they run into trouble. If a Data Warehouse is used in a new way, the volume of data to be stored tends to increase rapidly. In general providing for extra capacity when starting is less costly than capacity expansion later.
The Technical Installation Stage
The technical installation consists of various layers. You are installing a Database Management System, configuring a storage architecture (direct attached, network attached, storage area networks), and setting up an efficient storage backup solution. Each layer has to be tested before you can move on to the next.
When it comes to the installation process network configuration is of the utmost importance. Your data warehouse should be able to provide seamless and robust connectivity to source systems and may need data transfer in large volumes. Some companies find that their Networ systems are unable to handle the required amount of data and may need to upgrade their systems before they can complete the installation.
Challenges of Data Migration
The most complicated challenge of the data migration process is data management from the company’s previous warehouse system. Outdated systems transition poorly to modern data warehouse systems. The challenges stem from a variety of data formats, inconsistent naming systems, and years of poor data management.
Many installations take a phased process towards data migration. This may take longer but is less risky overall. Each data migration can be validated and transformation issues can be addressed, while the systems used that run the legacy systems, while the data warehouse is constructed.
Considerations After the Warehouse Installation
There are certain things that can be handled only after the warehouse is fully operational. These include query and index optimisation, and the scheduling of maintenance. These are the tasks to fire up the monitoring systems to capture performance metrics and to catch issues.
The security configuration is still being handled at this point. The access management, encryption, and audit logging need to be tested with real users. It is important to have security, but it’s just as important to ensure that security does not block legitimate access.
Depending on the size and intricacy, the installation can take anywhere from several weeks to several months. Problems created by rushing an installation can end up costing more to fix than the issues created by taking the installation at the proper pace.