【存储部落】 » RAID3 http://www.sansky.net sansky的存储技术博客，内容涵盖存储解决方案、存储系统、存储硬件、存储软件、存储管理、存储安全、数据备份与恢复、数据保护、存储基础知识，为大家推荐各种存储产品、和存储技术、视频监控、广电、电信、政府、教育、医疗等行业存储系统解决方案， Sat, 31 Dec 2011 10:22:25 +0000 zh-cn hourly 1 http://wordpress.org/?v=3.3.1 RAID3工作原理图解及特点分析 http://www.sansky.net/article/2007-06-19-raid3.html http://www.sansky.net/article/2007-06-19-raid3.html#comments Tue, 19 Jun 2007 03:06:59 +0000 sansky http://www.sansky.net/html/2007-06-19-1080.html Continue reading → 3: Parallel transfer with parity

Characteristics/Advantages

1. Very high Read data transfer rate

2. Very high Write data transfer rate

3. Disk failure has an insignificant impact on throughput

4. Low ratio of ECC (Parity) disks to data disks means high efficiency

Disadvantages

1. Transaction rate equal to that of a single disk drive at best (if spindles are synchronized)

2. Controller design is fairly complex

3. Very difficult and resource intensive to do as a “software” RAID

Recommended Applications

1. Video Production and live streaming

2. Image Editing

3. Video Editing

4. Prepress Applications

5. Any application requiring high throughput

The data block is subdivided (“striped”) and written on the data disks. Stripe parity is generated on Writes, recorded on the parity disk and checked on Reads.

RAID Level 3 requires a minimum of 3 drives to implement

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