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NT1230 cLIENT-sERVER NETWORKING 1 | UNIT 2 ASSIGNMENT 1 | DISK REDUNDANCY RESEARCH | | Joseph Balcazar (13383477) | 6/27/2015 |

Using the internet and the ITT-Tech Library, research the following questions and provide your thoughts on each one . Submit your answers in a Word Document and cite any resources in A.P.A format |

1.What does R.A.I.D stand for? R.A.I.D stands for Redundant Array of Inexpensive Disks
2.When would we use RAID?
We would use RAID in file server and data storage where access speed with a minimal lost of data and reliability is crucial for example a web store
3.Define the following types of RAID:
a. RAID0 Disk Striping offering no redundancy and is written across multiple drives increasing drive performance
b. RAID1 duplicates entire contents of drive1 on a second drive so if the primary drive fails there’s a backup of the primary on a secondary disk minimizing downtime of drive
c. RAID5 Spreads data across multiple drives evenly giving server or website higher drive data reliability and higher drive storage capacity
d.RAID6 RAID 6, also known as double-parity RAID, uses two parity stripes on each disk. It allows for two disk failures within the RAID set before any data is lost.
4.Why is RAID0 of any use if it doesn’t offer any redundancy ?
RAID0 is usedwhere drive performance is more important that security of data for example a gaming computer.
5 Why do u think RAID1 can be the most expensive? Why would people utilize it if so costly?
RAID1 is the most expensive because it is complete mirroring of data without any parity. This is

expensive in terms of write times because data must be written identically to two or more drives, and is

determined by the write time of the slowest drive. It is the most expensive financially because the cost is

NX, where X is the number of drives that should be mirrored and N is the cost of the mirroring drives.

6.If You, as a home computer user, were to purchase a form of RAID Which on would you choose and why ?
I would use RAID1 because of the simple fact that I have a lot of pictures ,music and, personal videos stored on my computer so if one drive failed I would have a backup of my files that I can access without loss.
7. What is the difference between RAID hardware and RAID software?
RAID software uses the cpu of the host server as the RAID uses the cpu of the RAID card

References http://www.cnet.com/forums/discussions/to-raid-0-or-not-to-raid-0-299126/ http://searchstorage.techtarget.com/definition/RAID-6-redundant-array-of-independent-disks http://www.answers.com/Q/Why_do_you_think_that_RAID_1_can_be_the_most_expensive_all_the_raids http://www.hetzner.co.za/helpcentre/index.php/articles/content/category/truserv_dedicated_hosting/what_is_the_difference http://www.midwestdatarecovery.com/raid-system-common-use.html

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