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关于Unassigned Devices挂载硬盘和添加校验盘的问题

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使用环境:目前是1t+12t+4t+200g(ssd)放在阵列内,其中1t+12t拿来做pt下载保存电影;4t负责保存自己的出去拍的视频,200g负责保存虚拟机的硬盘和docker的镜像等(感觉这些东西放在ssd启动更快)

 

需求: 基于unraid对校验盘的说明,我必须使用一块12t的硬盘才能添加为校验盘,但是我不想保护那两块下载盘(数据不重要),想添加一块4t保护那两块存资料的硬盘,目前找到的方案分为两种:

1.就是把下载盘做为一个缓存池,添加共享,设置仅缓存,然后选择这个缓存池;

2.将硬盘移出阵列,使用Unassigned Devices挂载硬盘,这样就有两个问题,1.挂载的硬盘会不会有速度损耗或者增加cpu负担。2.添加缓存后数据会不会走缓存

 

还有两个问题:3.看见论坛有说下载盘不建议添加到阵列,推荐新建缓存池使用,说是这样可以减轻硬件负担,不知道是不是真的。4.看见反馈说添加校验盘后读取速度会大幅下降(据说只有60-70),目前没有校验盘千兆内网是能跑满的,这个速度衰减通过ssd缓存是不是能得到改善?

问题较多,麻烦各位解答!

Edited by harrison.guo

1、不保护的硬盘可以放到缓存池或通过Unassigned Devices挂载;

2、阵列加入校验盘保护后,因为存在实时校验,写入会受影响,但不影响读取速度。

3、因缓存池不受阵列校验影响,设立ssd缓存或高性能机械硬盘缓存(没有ssd快,但容量大),不损失速度存入unraid服务器,缓存盘起到中介存储作用,然后通过定时的mover计划任务,把这些数据后台写入到目标盘和目录。

 

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