Disk caching saves copies of the downloaded files on the hard drive so they doesn't need to be downloaded to be redisplayed. These pages can be viewed by anyone with permission to the cache folder. Pages transmitted with SSL encryption often contain sensitive information and caching of these pages to disk may present a privacy risk. This preference controls whether to cache to disk pages that were transmitted with SSL encryption.

Redundant arrays of inexpensive disks (RAID)

RAID is a method in which information is spread across several disks, using techniques such as disk striping (RAID Level 0) and disk mirroring (RAID level 1) to achieve redundancy, lower latency and/or higher bandwidth for reading and/or writing to disks, and maximize recoverability from hard-disk crashes.

File compression and decompression

File compression can significantly reduce the size of a file (or group of files). Smaller files take up less storage space on the host and less time to transfer over the network, saving both time and money.