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Hardware

Information on Secondary Storage Devices

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Hardware

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  1. Hardware PSK TECHNOLOGIESPVT.LTD IT COMPANY Nagpur Secondary Storage www.pskitservices.com Contact us :09422123343

  2. SECONDARY STORAGE DEVICES • History of Hard disk • Types of Hard disk • SATA Hard disk • USB / External Hard disk • SSD (solid State Drive) SSD • SCSI (Scuzzy) • What is Partitioning? • Formatting www.pskitservices.com Add a footer

  3. Secondary Storage storage provides permanent or nonvolatile storage. Using secondary storage devices such as a hard disk, data and programs can be retained after the computer has been shut off. www.pskitservices.com

  4. Hard Disk HDD is Non-volatile permanent storage device, Uses magnetic media for storing data, and Hard disks save files by altering the magnetic charges of the disk’s surface to represent 1s and 0s. Hard disks retrieve data and programs by reading these charges from the magnetic disk. Hard disks use rigid metallic platters that are stacked one on top of another. Hard disk store and organize files using tracks, sectors and cylinders. . www.pskitservices.com Add a footer

  5. History of Hard disk The first hard disk drives were small in capacity, physically large, and expensive when compared to the cost of drives today. They were about 4 inches tall, 5.25 inches wide, and 8 inches long, and they weighed almost 10 pounds. In 1981, IBM introduced the XT computer with a 10 MB hard drive. (Winchester Drive) www.pskitservices.com Add a footer

  6. Types of Hard disk PATA / IDE (Parallel Advanced Technology Attachment) Having 40 Pins • PATA is capable of data transfers speeds of 66/100/133 MBs/3 GBs second • Molex Connector Use for Power RPM 5400/ 6400/ 7200 www.pskitservices.com Add a footer

  7. Power PATA / IDE Hard Disk SATA Hard disk • 1) SATA (Serial Advanced Technology Attachment) It is Pinless hard disk SATA Molex Connector Use for Power RPM 7200 SATA is capable of data transfers speeds of 150/300/600 MBs/ to 6 GBs second, Molex PSK TECHNOL www.pskitservices.com

  8. USB / External Hard disk A USB hard drive is an external hard drive that connects via USB. It uses the same design as an internal hard drive, except comes in an external casing that protects the drive. The case also includes a USB interface, which allows you to connect the drive to your USB port using a USB cable. www.pskitservices.com

  9. SSD (solid State Drive) Unlike hard disks , which rotate and have read/write heads that move in and out, Solid state storage devices have no moving parts. Data and information are stored and retrieved electronically directly from these devices. It is new hard disk than other , more costly and high speed hdd It is pinless Hard disk like sata Satamolex use for power Satadata cable use Access speed 6 Gbps plus www.pskitservices.com

  10. SCSI (Scuzzy) SCSI (Scuzzy) Small Computer System Interface It is hot swap hard disk ,use in server It is available in 50 & 70 pins / pinless also Access speed 6gps plus RPM 10k, 15k plus www.pskitservices.com

  11. What is Partitioning? Disk partitioning is the process of logically dividing the storage space of a hard disk into separate areas commonly called as partition or drives There are three types of partitions 1. Primary 2. Extended 3. Logical Formatting • A file system tells how the files and folders to be created are stored and retrieved. • FAT 16 Use in Windows 98 • FAT 32 Use in Windows 98, XP, Vista ,Win 7 • NTFS Use in Windows XP, Vista win8, win10, Server OS. www.pskitservices.com

  12. THANKYOU PSK Technologies Pvt . Ltd IT Company 9975288300 t@pskitservices.comservices.com prashant@pskitservices.com Follow us on www.pskitservices.com

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