Operating Systems

feastcanadianSoftware and s/w Development

Dec 14, 2013 (3 years and 7 months ago)

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Running head:
OPERATING SYSTEMS







1








Operating Systems

Team A

POS/355

October
27
, 2013

Liane Monaco
-
Christensen, MBA
-
TM

OPERATING SYSTEMS


2


Operating Systems

Linux

A strong point of Linux and probably one of the most known feature is its cost. Linux is
completely free.
Linux was developed from Unix and
the GNU project. T
he announcement
for
the GNU project was announced on September 27
th

1983 as stated by Free Software Foundation,
Inc (October 3
rd

2013) by a man named Richard Stallman. In
1991
Linus Torvalds

began the
development for what is known as Linu
x. Today Linux is a free and open source Operating
System used all over the world as servers or personal computers on desktops and laptops.

Linux is known to be stronger than windows in the security aspect. Being free and open
source, there is a huge colla
boration of people around the world that contributes to the
development
of a secure OS. Linux has a user space kernel space which operates on the
hardware. The Kernel is a liaison between the hardware and the user space or interface which all
users operate

on. Memory management and Process management reside in an elevated space
which is not available to the users until called upon. Components that make up the kernel to
handle memory management and process management are called interrupt handlers and
schedul
ers to share process

usage
(Love, 2005).

The Kernel separates the user applications from
the hardware which is what makes Linux more stable and secure compared to Windows.


Return on investment is simple to see with Linux. The Operating System is free and
can be
used to host
a number of services including email, storage, print, and web. When the Operating
System is free and enterprise services are being provided, the return on investment is immediate.
Leveraging the free license and services available to Li
nux through repositories the scalability is
OPERATING SYSTEMS


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endless as long as there is enough hardware resource. Linux distributions have also evolved to
support 64 bit Operating Systems resulting more compatibility across hardware and software.

Making a recommendation f
or Palomar is simple; a combination of all the Operating
Systems working as one. How this is achieved is through virtualization, which operates on
an

operating system as well
; t
he VMware VMkernel, or more commonly known as ESXi.
VMware
and the Operating Sy
stem ESXi operates on a proprietary
code
very similar to
UNIX

and Linux.
The resemblance is s
o similar in fact that almost every believes it is based off a Linux or
UNIX

build.
The reason why the VMware hypervisor is similar to Linux and
UNIX

is because VM
ware
uses so many opens source software components. VMware is designed as an Embedded
Operating working directly at the bare metal level; the VMware Kernel is called the VMkernel,
completely proprietary to VMware

(Peetz, 2013).

How will Palomar benefit fro
m an
other

operating system when it already has several OS
running? The answer is virtualization. Virtualization can be used to take advantage of every OS
on the market today and only use the advantages of each. By running a virtualized environment
with VMw
are ESXi 5.5 as a hypervisor
,

Linux,
UNIX
, Microsoft Windows, and Apple OSX can
be installed on top of the hypervisor to provide services for
Palomar Medical Center
.
By
implementing virtualization Palomar can turn its current servers into virtual servers. Virtual
servers means less hardware, centrally managed, and high uptime. Virtual desktops can also be
implemented using VMware Horizon View
as virtualized desktops
an
d the concept of bring your
own device BYOD.

Virtualization can benefit
Palomar Medical Center

by using Windows for simplicity and
user friendliness through the similarity of Window’s graphical user interface, the security and
OPERATING SYSTEMS


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stability of all the free Li
nux distributions available at our finger tips, and even Apple OSX as
view devices for virtual desktop. Linux can be used as

free

virtual servers to provide services for
Windows Operating Systems as Virtual Desktops, and Apple OSX for view devices if custo
mers
desire.
Cost associated to the implementation of virtualization is frightening at first but over a
short period of time, the performance and return on investment is immediate. Desktop hardware
updates each year is eliminated completely with the use of

virtual desktop and employees have
the luxury to use their personal devices as view clients for virtual desktops. Licenses for
Microsoft Operating systems do not change and can be used in the virtual desktop environment.

The physical security posture of
servers is removed and the uptime of services being
provided to patients and employees are 100% if engineered and implemented properly.
The costs
of maintaining a mail or web servers will yield immediate when changing servers to open source
servers from Li
nux. Power is drastically reduced from hundreds of servers to
eight

to
ten

high
efficient servers for virtualization, and t
housands of desktops reduced to almost none.
Virtualization is an easy recommendation to make to
Palomar Medical Center

or any other
company not only to save costs but try to be more ecofriendly to our earth as well.




OPERATING SYSTEMS


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References

Free Software Foundation, Inc (October 3
rd

2013).
“Initial Announcement”
.
Retrieved from

http://www.gnu.org/gnu/initial
-
announcement.html

Love, Robert (Janua
ry 12th 2005).
Linux Kernel Development.

Retrived from

http://se.tju.edu.cn/~liym/embeded_system/resource/Linux%20Kernel%20Development,
%202nd%20Edtion.pdf

Peetz, Andreas (August 22
nd

2013).
“A myth busted and an FAQ: ESXi is *not* based on Linux!

But
what is it?”
.
Retrieved from
http://www.v
-
front.de/2013/08/a
-
myth
-
busted
-
and
-
faq
-
esxi
-
is
-
not
-
based.html