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战斗力 鹅
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注册时间 2002-1-3
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你搞清楚DWPD是什么概念再说,这是企业级硬盘才有的指标,而且完全等同于TBW除以保修时间,是给用户在服务器上部署服务的时候对磁盘写入量一个参考,避免在保修期内提前用完硬盘寿命
普通用户写硬盘的强度完全不可预测,看TBW就完事了,没有任何证据证明短时间内大量写入会严重影响到颗粒寿命
The TBW value assigned to a solid-state device is the total bytes of written data (based on the number of P/E cycles) that a drive can be guaranteed to complete (% of remaining P/E cycles = % of remaining TBW). Reaching this limit does not cause the drive to immediately fail. It simply denotes the maximum number of writes that can be guaranteed. A solid-state device will not fail upon reaching the specified TBW. At some point based on manufacturing variance margin, after surpassing the TBW value, the drive will reach the end-of-life point, at which the drive will go into a read-only mode.
Because of such behavior by Entry solid-state drives, careful planning must be done to use them only in read-intensive or mixed up to 70% read/30% write environments to ensure that the TBW of the drive will not be exceeded before the required life expectancy.
For example, the PM983 Entry 3.84 TB drive has an endurance of 5466 TB of total bytes written (TBW). This means that for full operation over five years, write workload must be limited to no more than 2995 GB of writes per day, which is equivalent to 0.8 full drive writes per day (DWPD). For the device to last three years, the drive write workload must be limited to no more than 4992 GB of writes per day, which is equivalent to 1.3 full drive writes per day.
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