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Utility software ((Encryption software (Encryption software scrambles…
Utility software
Encryption software
Encryption software scrambles (encrypts) data to stop third-parties from accesing it. Encrypted data can be decrypted using a special 'key'.
compression software
Compression software reduces the size of files so they take up less disk space. It's used loads on the internet to make files quicker to download. Standard file formats include '.zip' and '.rar'. Compressed files need to be extracted before they can be used.
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Defragmentation
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As files are moved, deleted and change size, lots of small gaps begin to appear on the disk.
Over time, the disk becomes more and more fragmented. This makes reading and writing files slower as the read/write head has to move back and forth across the disk
Defragmentation software reorganises data on the hard drive to put fragmented files back together. It also moves files to collect all the free space together. This helps toe prevent further fragmentation
As SSDs use flash storage with no moving parts, fragmentation doesn't cause them any problems- they can access data just as quickly however it's arranged. In fact, as SSDs have a limited number of read/writes, defragmenting them can actually shorten their lifespan
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