Data Center Virtualization

DATA CENTER
VIRTUALIZATION

Table of Contents
Scenario 1........................................................................................................................................3
Technical aspects of virtualisation...............................................................................................4
Hypervisor...................................................................................................................................5
Virtual Design..............................................................................................................................5
Scalability....................................................................................................................................5
Physical limitations and external considerations for virtualised implementations and
architectures.................................................................................................................................6
SAN (Storage Area Network)......................................................................................................7
Security........................................................................................................................................8
Secure Energy supply and Sustainability....................................................................................8
Scenario 2........................................................................................................................................9
Importance of security policy and its influence on organizational design at ABC ltd................9
Importance of SAN infrastructure in protecting the company data from the corruption..........10
Disaster recovery system for virtualised data centre.................................................................12
REFERENCES................................................................................................................................1

Scenario 1
University has two options either to start own virtual centre in premises or outsource the work to
Amazon Web Services. Each option has their own benefits and drawbacks. If University
exercises the option of having own virtual centre then it will have to manage everything on own,
the systems, hardware required, cooling systems and space management will have to be done by
the university. The university IT cell will have to look after the management of the server room
maintaining the systems and correction of errors. The management will have to check for the
room temperatures and install security devices in the data centre. The expenses will have to be
borne by the university although the server functioning can be properly monitored by the IT
management and it will have an accountability of the purchases going on in the department and
of what is required next.
If the university exercises the option of outsourcing the work, then it will have an
expertise of the Amazon web services look after it. The team of Amazon will be doing the work
in the server room and will accordingly ask the university to purchase the required equipment
and will provide them the list. The employees of the service will be looking after database
management and other functions too of systems and space management in the area provided by
the university. The university will not have to worry about the problems of handling the data
centre. However, the university will have to fulfil the demands made by the firm to get whatever
is required. University will be paying the company for the services being provided (Bolodurina
and Parfenov, 2018).
The option of university running the system centre will bring in some challenges initially
but will prove beneficial in the long run for the institution. Expenses will be borne by the
university and there will remain accountability of the things being required and purchased. It
may happen if outsourced that technical equipments may not come handy if the Amazon firm do
not find it useful later on and thus money can go waste. University keeping stock of the materials
themselves would be investing better. Also, the IT cell of the university will be more attached
and answerable to the university if any problem occurs which in other case may not be so.
Accountability will be more in case of own IT cell working as there may go small errors
unnoticed by the outsourced firm. University can set own storage area network system which it
can operate as per wish. The University shall be more concerned about security installations in
system and updation of software in the system. University’s own maintenance department will

remain more concerned about the technical glitches than the other firm. Also, the costs of
employing other firm’s employees will be saved which can be utilised elsewhere in other
operations of the university.
Technical aspects of virtualisation
The adoption of virtualised data centre is a sense making decision, if one is looking to
performance optimisation and reduction in costs of hardware. The virtualisation offers many
benefits, particularly if one hopes to increase the resource availability and make a catalogue of
necessary information which can help the business. Incorporation of cloud capacity for storing
applications like big data can be done with virtualisation. There are benefits and challenges in
virtualisation. Talking of benefits, the hardware components of data centre are abstracted and a
common layer of software for managing the virtual machines. Different types of virtualisation
for servers, storage and networks are present (Pousa and Rufino, 2017). Virtualisation means
configuration in servers like virtual machines in which applications have own applications which
run in individual frames. The data centre will offer many benefits:
A) Few servers: The virtualisation allows to use few machines in data centre which can
reduce costs of operating and problems like heat with rise in temperatures.
B) Quick deployment: It is made easier to deploy applications which are new without
configuring of hardware.
C) Servers which are dedicated: Through virtualisation, it is easy to segregate the services
which run on same server, like separation of e-mail, the web service and database server
using virtual machines.
D) Easy cloud migration: The virtual machines can be deployed from data centre which
makes easy for migration to a cloud-based infrastructure as per need.
Hypervisor
The hypervisor is a software piece which can make virtualization possible. They abstract the
guest machine and operating system they use, from the hardware actually used.
They emulate the resources available so that guest machines are able to use them. The hypervisor
are of two types:
a) Type 1 Hypervisor