dection 5Storage Devices.docx

In addition to your cache webpages you also need to

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In addition to your cache webpages, you also need to clean up your deleted files. Anytime you delete a file, those files are not actually deleted immediately from your hard disk drive. They are saved in a special, reserved part of the hard disk drive in your Recycle Bin so that you can restore them later in case you need to. That's a good thing but over time, you're going to have tons and tons of files clogging up your Recycle Bin. These files are still saved on your hard disk drive and they're taking up space. So if you're really don't need those deleted files, then get rid of them by emptying your Recycle Bin on a regular basis. You should also look at the temporary files that are saved by your operating system on the hard disk drive. These can actually consume a lot more space than cache webpages and deleted files combined. Often, you'll see the temporary files saved on your hard disk drive are measured in gigabytes, whereas deleted files and cache webpages are measured in tens or hundreds of megabytes. Temporary files are created by your operating system whenever certain activities occur on the system. For example, during a software installation, temporary files are kept just in case they might be needed at a later point. Usually they're not needed at a later point, and they just need to be gotten rid of. To remove these unneeded files, run your Disk Cleanup utility frequently. The Disk Cleanup utility in Windows will go through and automatically clean up all of your unnecessary files at once. Use Defrag 5:45-9:09 In addition to keeping your hard disk clean, you can dramatically increase the speed of your hard disk by defragmenting it. Whenever your hard disk drive needs to write data to the hard drive, it will actually scatter parts of the same file over different areas of the disk. This is called fragmentation. Essentially, it looks for any free space that it can find on the hard disk drive, and divides it up the file to be saved into different chunks, and save it in these various open spots. Fragmentation allows us to use the space on the hard disk drive more efficiently. Instead of having to save files in a contiguous set of blocks, it can look for whatever storage space is available, divide the file up into chucks, and save it wherever it can find space. So we have some files here, we have some files here, and we have some files here. And there's some free space in between. Now let's suppose that the hard disk controller needs to save a file that's this big onto the hard disk drive. One option it has is to save this file contiguously right here. And that would be fine, but if it did, it would leave these two areas of the hard disk drive unused. And unless a small file, small enough to fit in this unallocated area, were to be saved, then this space would be wasted.
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  • Spring '14
  • Serial ATA

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