striping the data across 2 drives you can keep all of the capacity and double the read and write performance. However, RAID 0 provides no reliability, if one of your drives fail you will all of your data. RAID 1 in the other hand provides maximum reliability, but no performance increase. When both performance and reliability are needed, there is the option for a RAID 10 configuration. To configure a RAID 10 array, you need four drives, stripe the data on all four drives and mirror two against two
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technology. 3- Topics presented are: * New hard drive installation * Hard drives 137 GB limit * 300 GB hard drive Scenario * Hard Drive interfaces PATA,SATA,SCSI,USB and FireWire. * PATA or parallel ATA * ATA 100 and ATA 133 * SATA or serial ATA * Floppy drives : 3 1/2” disk and 5 ¼”disk * Floppy Drives Formatting * Power Supply connections * Connections types: Molex and berg * Floppy Drive cables and connectors * CDs * Pits and Lands
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Source Manufacturer W Capacity Price of Cost per y Drive megabyte 1956 Note 0 IBM 5 megabytes U$50,000 U$10,000 1980 January Morrow Designs 26 megabytes U$5000 U$193 1980 July Note 34 North Star 18 megabytes U$4199 U$233 1981 September Apple 5 megabytes U$3500 U$700 1981 November Seagate 5 megabytes U$1700 U$340 1981 December Note 31 VR Data Corp. 6.3 megabytes U$2895 U$460 Note 32 Morrow Designs 10 megabytes U$2999 U$300 Note
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Week 2 – Cast Study 1 Robert Dickens Dr. Romy Lu 0001VA016-1138-001 – Advanced Computer Architecture 20 October 2013 Digipos is a company that provides infrastructure solutions specifically tailored to retail oriented companies. Digipos provides a wide range of hardware platforms that include displays, mobile ecommerce solutions, systems, software, and even third party integration solutions. Digipos traditionally recommend that
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passwords have not been changed from their default status. Second, all data is kept on the network. I am assuming that there is no centralized server or storage for this data. If the data were kept all over the place on workstations or some external drive then this will invite hackers to gain access to all of the data. There was also no mention of this data being secured by passwords or permissions. Third, the users can access the network from home. This is a huge risk. There is no mention of VPN
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11. C: Changing the disk’s surface so that later the light will reflect differently for 0 or 1 12. B: Used for long-term memory D: Connects to the CPU over a bus using a cable 13. A: Actuator arm C: Platters 14. A: RAM D:USB flash drive 15. D: The binary equivalent of decimal 123456789 16. D: By closing an electrical circuit connected to the key when the key is pressed 17. B: Two dimensions: movement as two numbers: one in the direction of the X axis of an X,Y graph and
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Ergonomic 6. Encoder 7. Interface 8. Electronic Health Record (EHR) Chapter Review Short Answers 1. Describe the difference between computer hardware and software? The hardware refers to the hard disk drive, the CPU, the monitor, and the keyboard. Software refers to the programs containing instructions to the computer that enable it to perform tasks. 2. Give two examples of hardware and two examples of software.
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Notebook | Hard Disk Capacity | RAM | Processor Speed | Price | Dell GX-620 Desktop | 80 GB hard drive | 2048MB RAM | 3.4GHz processor | $199.99 | Dell · Inspiron · Tower | 1 TB HDD | 8 GB RAM | 3.4 GHz | $458.99 | Lenovo ThinkPad T-Series | 180 GB SSD | 8 GB RAM | 2.70GHz | 1449.99 | Asus | 320 GB | 2GB RAM | 1GHz | $369.99 | Graphic Designer – * Out of these four computers I think a graphic designer would need Dell Inspiron Tower. The Dell Inspiron Tower has a 1 Terabyte hard drive which
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Austin Powell PT2520 Week 5 Essay 07/16/14 Security Plan Authentication- Will designate using SQL Server, which includes a two-step log-in process that drastically improves security. The initial log-in will grant the user access to the server, there will be an additional log-in required to access the database. Due to the nature of each user having different permissions granted, SQL Server is a better choice over Windows and will require each user to enter a username and password.
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Attached Storage Network Attached Storage (NAS) is a dedicated hard drive which is set up with its own network address and provides file-level data storage services to other devices on the network. It allows both programming and files to be served faster because they are not competing for processor resources. NAS usually configured with a web browser and do not require a keyboard, mouse or monitor. Unlike other external hard drives, NAS has a processor. Some NAS devices will run using standard operating
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