> For the complete documentation index, see [llms.txt](https://docs.console.zenlayer.com/glossary/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.console.zenlayer.com/glossary/r/raid.md). # RAID RAID stands for Redundant Array of Independent Disks. It is a technology that combines multiple hard drives into a single logical unit for the purpose of data redundancy, performance improvement, or both. RAID provides fault tolerance, meaning that if one disk fails, the data can still be accessed from other disks in the array. There are several types of RAID configurations, including RAID 0, RAID 1, RAID 5, and RAID 6, each with different levels of data redundancy and performance. 1. RAID 0 - also known as striping, it provides improved performance by dividing data across multiple disks, but has no redundancy and a higher risk of data loss if any of the disks fail. 2. RAID 1 - also known as mirroring, it provides redundancy by creating an exact copy of data on two disks, but with reduced capacity. 3. RAID 5 - it provides both performance and redundancy by distributing data and parity across multiple disks, allowing for the failure of one disk without losing data. 4. RAID 6 - it is similar to RAID 5, but with two sets of parity data to provide redundancy for two disk failures. 5. RAID 10 - it combines the benefits of RAID 0 and RAID 1 by striping data across multiple mirrored pairs of disks, providing both performance and redundancy. --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` GET https://docs.console.zenlayer.com/glossary/r/raid.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.