RAID相关知识简介

最新推荐文章于 2024-04-12 08:53:05 发布

delphiwcdj

最新推荐文章于 2024-04-12 08:53:05 发布

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分类专栏：服务器硬件

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RAID（冗余磁盘阵列）技术通过组合多个物理磁盘，实现数据冗余、性能提升或两者兼备。常见的RAID类型包括RAID 0、RAID 1、RAID 5和RAID 10。RAID 0提供最快的数据传输速度，但无数据冗余；RAID 1采用数据镜像，确保数据安全但空间利用率低；RAID 5使用分布式奇偶校验，提供冗余并适合小数据块读写；RAID 10结合了RAID 0的速度和RAID 1的安全性，但成本较高。

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RAID是什么

RAID (originally redundant array of inexpensive disks, now commonly redundant array of independent disks) is a data storage virtualization technology that combines multiple physical disk drive components into a single logical unit for the purposes of data redundancy, performance improvement, or both.

RAID翻译为中文名为，“独立磁盘冗余阵列”，之前老的叫法是，“廉价磁盘冗余阵列”。

RAID的作用

Data is distributed across the drives in one of several ways, referred to as RAID levels, depending on the required level of redundancy and performance. The different schemas, or data distribution layouts, are named by the word RAID followed by a number, for example RAID 0 or RAID 1. Each schema, or a RAID level, provides a different balance among the key goals: reliability, availability, performance, a