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如果你的工作是提高服务器的可用性、改进服务器性能或者实时备份数据,则RAID应在你的计划中占一席之地。RAID的优势在于其灵活性。你可以先确定要实现的目标的优先等级,如连续工作时间、数据保护、I/O速度和成本等,然后对系统进行配置以满足你的需求。数字意味什么? 购买RAID系统时,最重要的是要看它所支持的RAID级别。“级别”一词在此容易产生误解,使人感觉好象在表示一个分层结构,然而第2级并不一定比第1级好。 RAID 0不提供任何冗余,因此不能提供真正的数据保护,所以也不是真正的RAID。在RAID 0中,数据被分为许多块,并被写入不同磁盘。写操作所用时间与将数据写入单一磁盘所需时间相同。但是当用户请
If your job is to improve server availability, improve server performance, or back up your data in real time, RAID should be a part of your plan. The strength of RAID is its flexibility. You can prioritize the goals to be achieved, such as continuous working hours, data protection, I / O speed and cost, and then configure the system to meet your needs. What does it mean? The most important thing about buying a RAID system is the RAID level it supports. The word “level” is easily misunderstood here, and it feels as if it is representing a hierarchical structure. However, level 2 is not necessarily better than level 1. RAID 0 does not provide any redundancy, and therefore can not provide true data protection, so it is not true RAID. In RAID 0, data is divided into blocks and written to different disks. The time it takes to write is the same as the time required to write data to a single disk. But when the user please