IT Infrastructure BMIS 520


In this forum discussion, I have chosen to write about why a company would want a distributed database and the primary types of equipment and communication redundancies found in today's data centers.

Discussion Question One

Stallings & Case describes distributed database as a gathering of different databases stored on numerous hard disk through to the user, looks like one database (2013). This information is useful to organizations potentially considering a distributed database that has several workplaces in different locations around the world. Whereas, each site can retrieve and utilize their data allowing firms to have local control over their data, reduces communication cost, and response time in accessing official data (Stallings & Case, 2013). Being highly scalable and easily to expand without affecting other locations, firms can depend on implementing a distributed database. Distributed database are a reliable investment as well. Essentially, if a disaster arises in one location of the distribution, the company’s complete database will not be at a loss. Bamnote & Raipurkar states, replication and distribution of databases improve database performance at end-user worksites, (2013). Replication is utilized to generate additional occurrences of data in different fragments of a company’s database.

Discussion Question Four

When meeting existing requirements of a business, it is important choosing the right scope for a data center. It is also imperative that organizations consider expanding the requirements of future growth to ensure space is available for additional systems and equipment. When making such considerations, more power and redundancy, heating, ventilation, and air conditioning (HVAC), uptime requirement and systems upgrades are discussed to support the expansion.

Stallings & Case describes four major tiers that are familiar and needed for redundancy of equipment such as redundant computing systems, storage systems, environmental controls, and data communication connections, (2013). Tier one characterizes as no guarantee redundancy for devices, communication connections, and all equipment which possibly used by small business. The uptime availability is at 99.671 percent. Tier two center provides an availability of 99.741 percent that have a one single path for power and non-redundant connection to the Internet and other components. Tier two comes with, and uninterrupted power supply raised the floor and on-site generator. Tier three has dual paths for an energy source of all information technology equipment and redundancy. Therefore, this tier level meets or exceeds the requirements of tier two. Tier three also provides multiple independent distribution links between hardware and network switches. Whereas, providing adequate capacity to transport the load on one distributed path while providing upkeep on another. Tier three availability uptime is at 99.882 percent. Finally, tier four availability uptime is at 99.995 percent. This tier is suitable for big corporations that meet or exceeds all of tier three requirements. Tier four centers is fault tolerant and have full redundancy on all equipment, and components including storage systems and HVAC systems and servers. Additionally, this level has compartmentalized security zones accessible by an access control system.


There are important decisions that must be added such as cooling, space availability, and safety regulations may change as well. To avoid data loss, understanding why a distributed database is best and choosing the appropriate tier for redundancy is important organizations for future growth.