...Disk Partitions Disk Partitions An internal hard disk ( PATA, SATA, or SCSI) cannot be used until it is prepared for use. There are two steps involved in preparing a hard disk: Step 1. Creating partitions and logical drives Step 2. Formatting partitions and logical drives ( which assigns drive letters) A disk partition is a logical structure on a hard disk drive that specifies the following: ¦ Whether the drive can be bootable ¦ How many drive letters ( one, two, or more) the hard disk contains ¦ Whether any of the hard disk’s capacity is reserved for a future operating system or other use Although the name “ disk partition” suggests the drive is divided into two or more logical sections, every PATA, SATA, and SCSI hard disk must go through a parti-tioning process, even if you want to use the entire hard disk as a single drive letter. All versions of Windows support two major types of disk partitions: Primary— A primary partition can contain only a single drive letter and can be made active ( bootable). Only one primary partition can be active. Although a single physical drive can hold up to four primary partitions, you need only one primary partition on a drive that contains a single operating system. If you in-stall a new operating system in a dual- boot configuration with your current op-erating system, a new version of Windows can be installed in a different folder in the same drive, or can be installed in an additional primary partition. If you want to use a non- Windows...
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...Disk Clean Up Disk Clean up is a utility that is used when the computer is being maintained. This feature is part of the windows operating system. Its sole purpose of Disk Clean up is to free up disk space by deleting junk, temp and unused files it also is used to compress files as well. Disk Clean Up would become part of my arsenal if the PC I was working on were running sluggish and files started taking a really long time to open. I would also use it if I was running out of room on my Hard Drive. Diskpart Diskpart is actually a command line prompt the will allow you to create a partition on a hard drive without having to use the help of a third party software program such as True Image, Norton’s Ghost, and also Partition Magic. I actually used this command line prompt a couple days ago because I needed to create and format a partition on my usb flash drive so I could boot off of it from the bios. But there different way to utilize this feature and another on is to create a partition on the system drive and format it to any filing system FAT, FAT32, or NTFS and you would then be able use that section of your hard drive for storage or the installation of drives. Defragmentation In the maintenance of file systems, it is a process that reduces the amount of fragmentation. It does this by physically organizing the contents of the mass storage device used to store files into the smallest number of contiguous regions (fragments). It also attempts to create larger regions of...
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...my shoulders because I’m responsible for the quality of my work, which includes keeping the hard disk as reliable as possible and backing up the data if possible. One of the ways to achieve reliability on the hard disk is by doing occasional disk cleaning. Microsoft has a tool called Disk Cleanup which allows me to delete any unneeded files, temporary internet files, files in the Recycle Bin, Hibernation files, setup log files, temporary files, thumbnails and office Web pages. Although it may sound that this tools delete too many things at once, it actually has the capability of choosing what particular things the users wants to be deleted. It is great because it keeps the hard disk from being crowded with stuff that is completely useless and just takes up the space for the important stuff. Another way of making sure the disk is not being slowed down is by doing the defragmentation. If the hard drive is used extensively and large files are being stored the will be full of fragments very soon. Microsoft has also shown initiative with this issue and the Disk Defragmentation tool was created. This program is very easy to use but also crucial in making sure there are fewer complaints about my hard disk working slower than before. Before doing the disk defragmentation the program allows me to analyze the disk for any fragments. It will show me how badly the disk is and if the disk has been cleaned and defragmented than how much fragments are left from the recent use. After...
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...RAM AM (random access memory) is the place in a computer where the operating system, application programs, and data in current use are kept so that they can be quickly reached by the computer's processor. RAM is much faster to read from and write to than the other kinds of storage in a computer, the hard disk, floppy disk, and CD-ROM. However, the data in RAM stays there only as long as your computer is running. When you turn the computer off, RAM loses its data. Year | Company | Size Kbytes | Cost US$ | 2002 | Star Surplus | 524288 | 99 | 2003 | Crucial | 524288 | 81.99 | 2004 | New Egg | 524288 | 80 | 2005 | New Egg | 1048576 | 119 | 2006 | New Egg | 1048576 | 83.99 | 2007 | New Egg | 1048576 | 79.98 | 2008 | New Egg | 2097152 | 44.99 | 2009 | New Egg | 4194304 | 51.99 | 2010 | New Egg | 2097152 | 39.99 | 2011 | New Egg | 4194304 | 21.99 | Hard Disk A hard disk is really a set of stacked "disks," each of which, like phonograph records, has data recorded electromagnetically in concentric circles or "tracks" on the disk. Two heads, one on each side of a disk, read or write the data as the disk spins. Year | Company | Size MBytes | Cost US$ | 2002 | Star Surplus | 120000 | 199 | 2003 | Western Digital | 81900 | 107 | 2004 | Seagate | 120000 | 99 | 2005 | Western Digital | 200000 | 99.99 | 2006 | Maxtor | 250000 | 80.97 | 2007 | Western Digital | 250000 | 69.99 | 2008 | Western Digital | 500000 | 74.99 | 2009 | Hitachi...
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...Contents 1. Introduction 2. History of Hard Disk Drive (HDD) Industry 3 Definition of HDD 4. Structure of the Industry 5. Competitiveness 6. Challenges 7. Conclusion 1. Introduction In this era, people own various types of electronics which contain hard disk drives. Among these HDD (Hard Disk Drive) industries, Seagate is one of the worldwide leaders in manufacturing and marketing of hard disk drives. Seagate’s corporate office is located in Scotts Valley, California and employs nearly 52,000 people around the world. As one of employees in Seagate Company, I will explain in detail the nature of the HDD industry and its products. 2. History of HDD Industry Behind the HDD (Hard Disk Drive) industry is an interesting and challenging history. In 24 years it progressed from a monstrosity with fifty two-foot diameter disks holding five Mbytes of data to today's drives measuring 3.5 inches wide and holding 2 Tera-Bytes. The HDD market has expanded into consumer applications such as camcorders, cell phones, audio players, video players, video recorders, personal assistants and video game consoles. Before the disk drive was created, there were magnetic drums. In the 1950s, Engineering Research Associates of Minneapolis built the first commercial magnetic drum storage unit for the U.S. Navy, called ERA 110, which could store up to a million bits of data. In 1956, IBM invented the first computer disk storage, the 305 RAMAC (Random Access Method of Accounting and...
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...to get a hard disk ready for an operating system and the utility tools that the Windows OS uses. Some the language might be a little technical but I’ll do my best to explain as much as I can as easy as I can. All this information is new to me so forgive me if I miss a step or skip over something. I’ll be trying to explain the tools and utilities in the Windows 7 and Windows XP. Accessing Disk Management in the Windows 7 OS from the computer management utility is very easy. There won’t be a shortcut to Disk Management in the start menu. The Disk management isn’t a program in the same ways that most software is. Let’s start with using the Start button and finding the Control Panel. Find the System and Security Link. If you have large icons or small icons the link won’t show up in the Control Panel. So what you'll do now is click on the Administrative Tools icon. Now once you’re in the Administrative Tools window, double click on the Computer Management icon. While in the Computer Management window, click on the Disk Management window that should appear on the right side of the window. It will now give you options to partition a hard drive, which means in the windows 7 OS that you divide the hard drive into parts and make those parts more accessible to the OS. Also in this window you can format a hard drive, which means that you delete any information on the drive to setup a file system so Windows 7 can read it and write data to it. The last option in the Disk Management window...
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...CS252 Graduate Computer Architecture Motivation: Who Cares About I/O? • CPU Performance: 60% per year • I/O system performance limited by mechanical delays (disk I/O) • Amdahl's Law: system speed-up limited by the slowest part! < 10% per year (IO per sec) I/O Introduction: Storage Devices & RAID Jason Hill 10% IO & 10x CPU => 5x Performance (lose 50%) 10% IO & 100x CPU => 10x Performance (lose 90%) Diminishing fraction of time in CPU Diminishing value of faster CPUs • I/O bottleneck: 2/7/02 CS252/Culler Lec 6. 1 2/7/02 CS252/Culler Lec 6. 2 I/O Systems Big Picture: Who cares about CPUs? • Why still important to keep CPUs busy vs. IO devices ("CPU time"), as CPUs not costly? – Moore's Law leads to both large, fast CPUs but also to very small, cheap CPUs – 2001 Hypothesis: 600 MHz PC is fast enough for Office Tools? – PC slowdown since fast enough unless games, new apps? Processor interrupts Cache Memory - I/O Bus Main Memory I/O Controller Disk Disk I/O Controller Graphics I/O Controller Network • People care more about about storing information and communicating information than calculating – "Information Technology" vs. "Computer Science" – 1960s and 1980s: Computing Revolution – 1990s and 2000s: Information Age • Next 3 weeks on storage and communication 2/7/02 CS252/Culler Lec 6. 3 2/7/02 CS252/Culler Lec 6. 4 Storage Technology Drivers • Driven by the prevailing computing paradigm – 1950s: migration from batch to on-line...
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...1. What does RAID stand for? Redundant Array of Independent Disks. Source: Steadfast.com 2. When would use RAID? When experiencing disk IO issues, where applications are waiting on the disk to perform tasks. It also provides additional throughput by allowing you to read and write data from multiple drives instead a single drive. Source: Steadfast.com 3. Define the following types of RAID: RAID 0 (Striping) - 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 though is that it is NOT redundant, the loss of any individual disk will cause complete data loss. I would not recommend ever using RAID 0 in a server environment. You can use it for cache or other purposes where speed is important and reliability/data loss does not matter at all, but it should not be used for anything other than that. As an example, with the 5% annual failure rate of drives, if you have a 6 disk RAID 0 array you've increased your risk of data loss to nearly 27%. RAID 1 (Mirroring) - RAID 1 is generally used with a pair of disks, though could be done with more, and would identically mirror/copy the data equally across all the drives in the array. The point of RAID 1 is primarily for redundancy, as you can completely lose a drive, but still stay up and running off the...
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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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...(Redundant Array of Independent Disks) is a storage technology that combines multiple disk drive components into a logical unit. Data is distributed across the drives in one of several ways called "RAID levels", depending on what level of redundancy and performance (via parallel communication) is required. Marketers representing industry RAID manufacturers later attempted to reinvent the term to describe a redundant array of independent disks as a means of dissociating a low-cost expectation from RAID technology. RAID is now used as an umbrella term for computer data storage schemes that can divide and replicate data among multiple physical drives. The physical drives are said to be in a RAID array, which is accessed by the operating system as one single drive. The different schemes or architectures are named by the word RAID followed by a number (e.g., RAID 0, RAID 1). Each scheme provides a different balance between two key goals: increase data reliability and increase input/output performance. 2. When would we use RAID? RAID is extremely useful if reliability and data redundancy are important to you. Even if you take backups, you will need to take the time to restore those backups and those backups could be hours or days old, resulting in data loss. RAID allows you to survive a drive loss without data loss and in many cases without any downtime. RAID is also useful if you are having disk IO issues, where applications are waiting on the disk to perform tasks. Going with...
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...Disk Redundancy Research Disk Redundancy Research • What does RAID stand for? Redundant array of independent disks • When would we use RAID? When need of advanced storage schemes are needed. Whether it is better performance, reliability and extra redundancy. • Define the following types of RAID: • RAID 0 – Block-level striping without parity or mirroring • RAID 1 – Mirroring without parity or striping • RAID 5 – Block-level striping with distributed parity • RAID 6 – Block-level striping with double distributed parity. (Basically extended RAID 5) • Why is RAID 0 of any use if it offers no redundancy? Best if used in a High bandwidth need. video and picture editing, etc. • Why do you think that RAID 1 can be the most expensive? Why would people utilize it if it’s so costly? Because its disk overhead requires the drives to always be running. Its 100% redundancy provides a guarantee that no data will be lost. • If you, as a home computer user, were to purchase a form of RAID, which would you choose and why? It all depends on what purpose I would choose to use a RAID for. If I was implementing a type of high traffic situation I would use RAID 5, RAID 0 in any high speed situation, and RAID 1 if high availability is needed. • What is the difference between software RAID and hardware RAID? Hardware raid is where a controller built into the motherboard or an Add-in card is used to populate the raid. Software raid is where you use the program available to your operating...
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...Task 1: Examining RAM To find out the types of RAM available to upgrade your computer, follow these steps: 1. Acquire computer information: Determine the make, model, and serial number of your computer by physically examining it. On a desktop computer, these numbers are on the back of the computer. For a laptop computer, this information is on the bottom of the computer. If the model and serial number are not clearly visible, refer to the manufacturer’s website for this information; otherwise, select a laptop you would consider buying for yourself and use its model number to obtain the information. Alienware X51 R2. 5x099y1. 2. Acquire RAM Information from the OS: You can determine the amount of RAM from the OS by performing the following steps: I. For Microsoft Windows XP: Click StartControl PanelSystem. Under the General tab, you will find the type of OS, the model of your computer, the type of CPU and its speed, and the amount of RAM. II. For Microsoft Vista and Microsoft Windows 7: Click StartControl PanelSystem and SecuritySystem. Take a screenshot of the window that appears. 2. Check the computer manufacturer’s website: Go to the computer manufacturer’s website and locate the support Web page. Look for the section that tells you the type and amount of RAM installed in your computer, depending on your computer’s make, model, and serial number. Take a screenshot of the website with the information on RAM. 3. Check the commercial RAM website:...
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...Disk Redundancy Research • What does RAID stand for? Redundant array of independent disks • When would we use RAID? When need of advanced storage schemes are needed. Whether it is better performance, reliability and extra redundancy. • Define the following types of RAID: • RAID 0 – Block-level striping without parity or mirroring • RAID 1 – Mirroring without parity or striping • RAID 5 – Block-level striping with distributed parity • RAID 6 – Block-level striping with double distributed parity. (Basically extended RAID 5) • Why is RAID 0 of any use if it offers no redundancy? Best if used in a High bandwidth need. video and picture editing, etc. • Why do you think that RAID 1 can be the most expensive? Why would people utilize it if it’s so costly? Because its disk overhead requires the drives to always be running. Its 100% redundancy provides a guarantee that no data will be lost. • If you, as a home computer user, were to purchase a form of RAID, which would you choose and why? It all depends on what purpose I would choose to use a RAID for. If I was implementing a type of high traffic situation I would use RAID 5, RAID 0 in any high speed situation, and RAID 1 if high availability is needed. • What is the difference between software RAID and hardware RAID? Hardware raid is where a controller built into the motherboard or an Add-in card is used to populate the raid. Software raid is where you use the program available to your operating system or a 3rd...
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...Redundant Array of Inexpensive Disks. Currently it is more commonly known as standing for Redundant Array of Independent Disks. 2. When would you use RAID? Having data on multiple disks helps ensure against data loss in case of a drive failure. If one of the drives fails most levels of RAID allow the user to just replace that one drive while not losing any data. Having multiple drives also allows multiple read and write operations to be going on at the same time, which increases performance. 3. Define the following types of RAID: a. RAID 0 Using two or more disks, RAID 0 utilizes a striped disk array with data broken down and written part to each disk. This increases performance since multiple input / output operations can be carried out at the same time. RAID 0, unlike the other levels of RAID, does not provide any protection against data loss. If one drive goes down, all of the data will be corrupted. b. RAID 1 RAID 1 requires two or more disks to operate, it organizes data into mirrored pairs. When data is written to one of the drives in a mirrored pair, it is automatically written to both drives. That way if one of the two drives fails the user just needs to replace that one drive. It also provides an increase in performance since two read operations can be performed at the same time. Only one write can be performed at a time since the data must be written to both drives. UNIT 2 ASSIGNMENT 1 3 c. RAID 5 Three disks are needed to implement RAID...
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...Jesse Caez 8/27/15 Should state colleges be free? Should College Tuition be Free for all Students? I believe that most students today struggle to pay for college. Unless you are a 4.0 grade point average student with a complete scholarship to the university of your liking, you are in the same condition as the majority of college students that struggle to pay the tuition for a four year school or attend community college to transfer after two years. Despite the fact that I attend ITT tech and call myself “financially stable” for the moment, but even with my mother’s income and with what I make myself, I am still not able to completely finance my way through college. I consider myself to be blessed as that does not even compare to what a student at a four year university has to pay for tuition; paying for tuition becomes even more burdensome if you are attending an out of state school or private university. Although financial aid tries to help students with their tuition with no expectation of being paid back, that money is generally insufficient in covering the majority of the debt. As a result, a “financially stable,” or lower status would still mean that you undertake debt that cannot be paid back in full for years to come. With that fact in mind, should college tuition be free for all students? In order to fully answer this question, I began exploring different articles that offered different opinions as to what should be done to resolve this issue. “Free College, We...
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