...Unit 2 Assignment 1: Disk Redundancy Research December 14, 2013 1) What does RAID stand for? RAID stands for? RAID stands for Redundant Array of Independent Disks. 2) When would we use RAID? RAID can be used by either individual users or large network users to store data across multiple locations to increase fault tolerance. 3) Define the following types of RAID: a) RAID 0 b) RAID 1 c) RAID 5 d) RAID 6 RAID 0 | Strips data without redundancy. Provides faster performance, but it lacks fault tolerance. | RAID 1 | Known as disk mirroring. This method doesn’t strip data, it saves all data intact across at least two disks to provide fault tolerance. | RAID 5 | Uses rotating parity to store data. There is do data duplication, but the parity data can be used to reconstruct data. Mostly used by large organizations for data that is not performance sensitive. | RAID 6 | Same as RAID 5, but adds another parity scheme to increase fault tolerance. | 4) Why is RAID 0 of any use if it offers no redundancy? RAID 0 allows data to be broken up in order to allow faster access to data. 5) Why do you think that RAID 1 can be the most expensive? Why would people utilize it if it’s so costly? RAID 1 can be the most expensive because it requires an entire drive to make a duplicate of any data and the more copies you want, the more drives you need. People still use is because it makes complete copies of data, not partial ones. The complete copies allow users...
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...UNIT 2. ASSIGNMENT 2. DISK REDUNDANCY RESEARCH Assignment Requirements: Using the Internet and the ITT Tech Virtual Library, research the following questions, and provide your thoughts on each one. Submit your answers in a Word Document and ensure that you cite any resources you utilized with the proper APA format. 1. What does RAID stand for? A. Redundant Array of Independent Disks 2. When would we use RAID? A. When you need a performance increase in software or software redundancy. Running a large Info server were a lot of people will be getting info at the same time. 3. Define the following types of RAID: A. RAID 0 this configuration has striping but no redundancy of data. It offers the best performance but no fault-tolerance. B. RAID 1 Also known as disk mirroring, this configuration consists of at least two drives that duplicate the storage of data. There is no striping. Read performance is improved since either disk can be read at the same time. Write performance is the same as for single disk storage. C. RAID 5 this level is based on block-level striping with parity. The parity information is striped across each drive, allowing the array to function even if one drive were to fail. The array’s architecture allows read and write operations to span multiple drives. This results in performance that is usually better than that of a single drive, but not as high as that of a RAID 0 array. RAID 5 requires at least three disks, but it is often recommended to use at...
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...Unit 2. Assignment 1. Disk Redundancy Research 1. What does RAID stand for? Raid stands for Redundant Array of Independent Disks 2. When would we use RAID? You would use RAID to combine multiple hard drives. 3. Define the following types of RAID: a. RAID 0 RAID 0 increases performance and splits data evenly between 2 drives b. RAID 1 RAID 1 mirrors both drives. c. RAID 5 RAID 5 uses 3 drives and uses striping to divide across all drives with additional parity data divided across all disks. d. RAID 6 RAID 6 is similar to RAID 5 but adds an additional parity block to each drive writing 2 parity blocks for each bit of data striped across the disks. 4. Why is RAID 0 of any use if it offers no redundancy? Because it splits the data evenly among the 2 hard drives 5. Why do you think that RAID 1 can be the most expensive? Why would people utilize it if it’s so costly? Because you will run out of space faster but you will always have a copy of your data if 1 of the drives ever fails. 6. If you, as a home computer user, were to purchase a form of RAID, which would you choose and why? I think I would try RAID 10 since it has the ability to use the advantages of RAID 1 and 0 I will have the mirroring on my secondary disks and no redundancy. 7. What is the difference between software RAID and hardware RAID? Hardware has a specially built controller to that handles the drives and costs more and the software has no specialized hardware is...
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...Unit 2 Assignment 1 Disk Redundancy Research 1. What Does RAID stand for? Redundant Array of Independent Disks 2. When would we use RAID? It’s a balanced way to improve overall storage performance. 3. Define the following types of RAID a. RAID 0: Provides data striping but it lacks both fault tolerance and redundancy to improve performance as a result if one drive fails then all data in the array is lost. b. RAID 1: Provides disk mirroring and duplexing so level one provides twice the read transaction rate of single disks and the same write transaction rate as a single disk. c. RAID 5: Uses block-level striping with parity data distributed across all member disks. Also RAID 5 has achieved popularity because of its low cost of redundancy. d. RAID 6: Extends RAID 5 by adding an additional parity block thus it uses block-level striping with two parity blocks distributed across all member disks. RAID 6 does not have a performance penalty for read operations but it does have a performance penalty on write operations because of the overhead associated with parity calculations and it’s also no less space efficient then RAID 5. 4. Why is RAID 0 of any use if it offers no redundancy? Because it provides data striping even though it lacks both fault tolerance and redundancy. 5. Why do you think that RAID 1 can be the most expensive? You get two copies of everything after you have a hard drive fail on you with all of the data completely lost you’ll understand that spending...
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...NT1230 Unit 2. Assignment 1 Disk Redundancy Research 1. What does RAID stand for? Redundant Array of Inexpensive Disk 2. When would we use RAID? When you have a vast amount of data to need to be backup or to improve speed of the system. 3. Define the following types of RAID: a. RAID 0: Splits data evenly across two or more disks (striped) without parity information for speed. RAID 0 was not one of the original RAID levels and provides no data redundancy. RAID 0 is normally used to increase performance, although it can also be used as a way to create a large logical disk out of two or more physical ones. b. RAID 1: An exact copy (or mirror) of a set of data on two disks. This is useful when read performance or reliability is more important than data storage capacity. Such an array can only be as big as the smallest member disk. c. RAID 5: Comprises block-level striping with distributed parity. Unlike in RAID 4, parity information is distributed among the drives. It requires that all drives but one be present to operate. Upon failure of a single drive, subsequent reads can be calculated from the distributed parity such that no data is lost. RAID 5 requires at least three disks. d. RAID 6: Extends RAID 5 by adding an additional parity block; thus it uses block-level striping with two parity blocks distributed across all member disks. 4. Why is RAID 0 of any use if it offers no redundancy? It splits data evenly across two or more disks (striped) without parity information...
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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...
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...Chad Van Buren Jr Unit 2 Assignment 1: Disk Redundancy Research 1. RAID stands for redundant array of independent discs 2. We would use RAID depending on the need of the individual or entity. RAID differs depending on the type you install. In question 3, I will discuss the difference between RAID types. From there you can decide which one suits your needs best. 3a. RAID 0- Is taking any number of disks and striping data across all of them. This will greatly increase speeds, as you're reading and writing from multiple disks at a time. An individual file can then use the speed and capacity of all the drives of the array. The downside to RAID 0 is that it is not redundant; the loss of any individual disk will cause complete data loss. b. RAID 1- Requires at least 2 hard drives. These disks mirror each other, meaning that all the data saved on one will then be mirrored or copied onto the other. The advantage to this RAID is that if one of your hard drives fails, you can then manually plug in your other hard drive to make it the primary and continue on with your business without delay or loss of data. If your second disk is then not replaced and the secondary hard drive fails all your data will be lost. c. RAID 5- This RAID requires the use of at least 3 hard drives. It’s similar to RAID 0 in the sense that data is stripped through all the hard drives to increase performance. What makes this RAID unique is the use of what’s known as parity bit. What this does is create...
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...NT1230 Unit 2. Assignment 1. Disk Redundancy Research 1. What does RAID stand for? Redundant Array of Independent Disk 2. When would we use Raid? To divide and replicate data into physical drives. 3. Define the following types of RAID: a. RAID 0-is simply data striped over several disks. This gives a performance advantage, as it is possible to read parts of a file in parallel. However not only is there no data protection, it is actually less reliable than a single disk, as all the data is lost if a single disk in the array stripe fails. b. RAID 1-is data mirroring. Two copies of the data are held on two physical disks, and the data is always identical. RAID1 has a performance advantage, as reads can come from either disk, and is simple to implement. However, it is expensive, as twice as many disks are needed to store the data. c. RAID 5-data is written in blocks onto data disks, and parity is generated and rotated around the data disks. Good general performance, and reasonably cheap to implement. Used extensively for general data. d. RAID 6-is growing in popularity as it is seen as the best way to guarantee data integrity as it uses double parity. It was originally used in SUN V2X devices, where there are a lot of disks in a RAID array, and so a higher chance of multiple failures. RAID6 as implemented by SUN does not have a write overhead, as the data is always written out to a different block. 4. Why is RAID 0 of any use if it offers no redundancy? Fast performs and...
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...NT1230 1/1/16 Unit 2 Assignment 1 Disk Redundancy Research RAID stands for redundant array of independent disks and is a data storage virtualization technology that combines multiple physical drives into a single logical unit for the purpose of backing up vital data, improving system performance, or both. It’s most useful for businesses because they usually network terminals that all pull from a central server with everything stored on it. RAID is used to allow for a seamless replacement of defective drives or swapping full drives for empty ones without hassle of having to reboot. There are four types of raid that are going to be discussed and there is also a difference between hardware RAID and software RAID. Software RAID is just software that runs on your operating system, hardware RAID uses a modified chip as a controller and assists the software for operating systems that software RAID is incompatible with. RAID 0 consists of striping, without mirroring or parity. The capacity of a RAID 0 volume is the sum of the capacities of the disks in the set, the same as with a spanned volume. There is no added redundancy for handling disk failures, just as with a spanned volume. Thus, failure of one disk causes the loss of the entire volume, with reduced possibilities of data recovery when compared to a broken spanned volume. Striping distributes the contents of files roughly equally among all disks in the set, which makes concurrent read or write operations on the multiple disks...
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...Date: 09-22-2015 Course: NT 1230 (Clients – Server Networking-1) Unit 2. Assignment 1. Disk Redundancy Research 1. RAID is Redundant Array of Inexpensive Drives is a method for creating a faster or safer single logical hard disk drive from two or more physical drives. RAID arrays have been common for years on servers using SCSI-interface drives. However, a number of recent systems feature ATA RAID or SATA RAID host adapters on the motherboard. 2. When would we use RAID? RAID is best used when to increase the performance and or reliability of data storage 3. Types of RAID definitions? a. RAID Level 0 (RAID 0)—Two drives are treated as a single drive, with both drives used to simultaneously store different portions of the same file. This method of data storage is called striping. Striping boosts performance, but if either drive fails, all data is lost. Don’t use striping for data drives. b. RAID Level 1 (RAID 1)—Two drives are treated as mirrors of each other; changes to the contents of one drive are immediately reflected on the other drive. This method of data storage is called mirroring. Mirroring provides a built-in backup method and provides faster read performance than a single drive. Suitable for use with program and data drives. c. RAID Level 0+1 (RAID 10)—Four drives combine striping plus mirroring for extra speed plus better reliability. Suitable for use with program and data drives. d. RAID Level 5 (RAID 5)—Three or more drives are treated...
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...Problem Solving Theory Computer Structure and Logic Strategies for the Technical Professional 2nd QTR NT1210 Introduction to Networking NT1230 Client-Server Networking I MA1210 College Mathematics I 3rd QTR NT1310 NT1330 MA1310 4th QTR PT1420 NT1430 EN1320 5th QTR PT2520 NT2580 EN1420 6th QTR NT2640 NT2670 CO2520 7th QTR NT2799 SP2750 Physical Networking Client-Server Networking II College Mathematics II Introduction to Programming Linux Networking Composition I Database Concepts Introduction to Information Security Composition II IP Networking Email and Web Services Communications Network Systems Administration Capstone Project Group Theory The follow diagram indicates how this course relates to other courses in the NSA program: 1 Date: 8/31/2012 Client-Server Networking I Syllabus NT2799 NSA Capstone Project NT2580 Introduction to Information Security NT2670 Email and Web Services NT2640 IP Networking PT2520 Database Concepts NT1330 Client-Server Networking II NT1230 Client-Server Networking I NT1430 Linux Networking PT1420...
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...STUDENT COPY The following sections contain student copies of the assignments that must be distributed to students at least two weeks prior to the due dates for those assignments. Online students will have access to those documents in PDF format available for downloading at any time during the course. ------------------------------------------------- Graded Assignment Requirements Assignment Requirements documents provided below must be printed and distributed to students as the guidance for completing the assignments and submitting them for grading. Instructors must remind students to retain all handouts and assignment documents issued in every unit, as well as student-prepared documentation and graded deliverables. Some or all these documents will be used repeatedly across different units. Unit 1. Lab 1. Preparing a Virtual Workstation Image Windows 7 Virtual Machine “Keyless” Installation and Re-arm Process Purpose: This section describes the reason for and the procedure to use the “keyless” installation for Windows 7 Professional applicable to our lab environment for IT109/NT1230, and to use the “Re-arm” procedure to extend the trial period to meet our curriculum needs. Background: In installing Windows 7 Professional into a virtual machine in the VMware Player for the labs in our lab environment, if the Product Key for Windows 7 Professional is applied and activated during or at the end of the installation, the installed virtual machine will be authorized...
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...DESIGN AND IMPLEMENTATION OF COURSE REGISTRATION AND RESULT PROCESSING SYSTEM CHAPTER ONE 1. INTRODUCTION 1.1 BACKGROUND OF THE STUDY Caritas University, Amorji Nike, Enugu, is a private University approved by the Federal Government of Nigeria on December 16 2004. It was officially opened on January 21, 2005 by the Federal Ministry for Education, Prof. Fabian Osuji. The formal opening was on January 31, 2005. The pioneer students of 250 matriculated on May 28, 2005 in beautiful ceremony that attracted dignitaries both church and state. It is the second Catholic University in Nigeria founded by Rev. Fr. Prof. Emmanuel Paul Mathew Edeh Cssp, OFR. Although he founded the school, the proprietor of the University is the Congregation of Sisters the Saviour, a religious Congregation of Nuns founded by him. The vision of Caritas University is to rescue some of our wandering and teaming youths from further slide into academic and moral decay, and development and transformation of our society through sound and adulterated education. Its mission is to discover, sanctify and apply the knowledge of science, environmental and engineering for human well-being and sound development of man for better society. Caritas University’s goal is to give efficacy to the University’s motto and to its philosophy of education. We embrace not only sound education for professional skills and competency in various fields; but also maintain...
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...ITT TECHNICAL INSTITUTE NT1310 Physical Networking GRADED ASSIGNMENTS ------------------------------------------------- Student Professional Experience Project NSA SPE Project 1 (to be completed by the end of NT1310): Install, Configure, Test, Maintain and/or Document the Worksite Local Area Network and Its Components Purpose The purpose of the Student Professional Experience (SPE) project is to provide you an opportunity for work experience in your field or in a related field to add to your résumé. You may have an opportunity to serve your community or work for a local employer for a project that will take between 20 and 30 hours. Project Logistics Career Services will identify an employer with needs in the following areas: Network related tasks (mostly confined to the LAN and Microsoft Windows Server 2008 environments) Students are expected to practice various skills discussed in all the technical courses in Quarters 1 through 3 of the NSA program at an employer’s site on network related tasks (more confined to the LAN and Microsoft Windows Networking with Server 2008 environments) that would involve installation, configuration, testing, maintenance and documentation of the worksite network and its components, and to properly document the technical information in all involved activities. Such documentation will be used as the source material for Items 2 and 3 defined in the Deliverables section of this document. Possible example projects could...
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...Contingency Plan Template Appendix I-3 CONTINGENCY PLAN Version Submitted to: Submitted By: Table of Contents 1 Executive Summary 1 2 Introduction 1 2.1 Purpose 3 2.2 Scope 3 2.3 Plan Information 3 3 Contingency Plan Overview 4 3.1 Applicable Provisions and Directives 4 3.2 Objectives 4 3.3 Organization 5 3.4 Contingency Phases 8 3.4.1 Response Phase 8 3.4.2 Resumption Phase 8 3.4.3 Recovery Phase 8 3.4.4 Restoration Phase 9 3.5 Assumptions 9 3.6 Critical Success Factors and Issues 9 3.7 Mission Critical Systems/Applications/Services 10 3.8 Threats 10 3.8.1 Probable Threats 11 4 System Description 12 4.1 Physical Environment 12 4.2 Technical Environment 12 5 Plan 12 5.1 Plan Management 12 5.1.1 Contingency Planning Workgroups 12 5.1.2 Contingency Plan Coordinator 12 5.1.3 System Contingency Coordinators 13 5.1.4 Incident Notification 13 5.1.5 Internal Personnel Notification 13 5.1.6 External Contact Notification 13 5.1.7 Media Releases 14 5.1.8 Alternate Site (s) 14 5.2 Teams 14 5.2.1 Damage Assessment Team 14 5.2.2 Operations Team 15 5.2.3 Communications Team 15 5.2.4 Data Entry and Control Team 15 5.2.5 Off-Site Storage Team 15 5.2.6 Administrative Management Team 15 5.2.7 Procurement Team 15 5.2.8 Configuration Management Team 16 5.2...
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