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Storage Devices. Internal / External Hard Drive Also known as hard disks Internal drive stores the...
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Transcript of Storage Devices. Internal / External Hard Drive Also known as hard disks Internal drive stores the...
Storage & Connectivity
Storage Devices
Storage & Connectivity
Internal / External Hard Drive
• Also known as hard disks• Internal drive stores the operating system software,
application software and the user’s documents• External drives come in various sizes and is connected via a
USB cable and has an external power source• Prices vary depending on size• Is portable
Storage & Connectivity
Solid State Drive• A high-performance plug-and-play storage device that
contains no moving parts• SSD components include either DRAM or EEPROM memory
boards, a memory bus board, a CPU, and a battery card• Because they contain their own CPUs to manage data
storage, they are a lot than conventional hard disks
Storage & Connectivity
Magnetic Tape• Use as external drive for storing large amounts of data on a
magnetized medium• Typically used by organisations for backing up vast amounts
of data• Can be set up to do this automatically
• Sturdy and durable for long term use• Slow to retrieve and search for data
Storage & Connectivity
Optical Storage Device• Read and written to by laser• CDs holds 650-800MB of data• DVDs holds up 17GB of data. Comes in different forms:
• DVD-ROM: Read only• DVD-R: Record• DVD-RW: Re-writable
• Blue-ray disks holds up to 25GB of data (single layer) or 50GB (dual layer)• Used mainly for large and high quality content
Storage & Connectivity
Memory Sticks and Cards• Used for storing and transferring files• Connected via USB• Small, lightweight to carry around and cheap• Large storage capacity for their size• Easy to lose / damage• Now can get encrypted so more secure
Storage & Connectivity
Cloud Storage• Storage capacity accessed through the internet or a wide area
network (WAN) connection• Purchased on an as-needed basis
• Users can expand capacity almost without limit