机柜：
      机柜一般是冷轧钢板或合金制作的用来存放计算机和相关控制设备的物件，可以提供对存放设备的保护，屏蔽电磁干扰，有序、整齐地排列设备，方便以后维护设备。机柜一般分为服务器机柜、网络机柜、控制台机柜等。

分辨机柜的好坏可以从以下几个方面解析
1、铁皮的厚度,铁皮越厚,机柜的承重就越大
2、做工,外表美观,表面的喷涂均匀
3、看材料，看配件
4、通风性能，承受重量，其次就是他内部空间和能不能从容的观察机器保护，设备运行状态
5、价格总是要重点考虑的，但是不能因为它而牺牲重要特性。
总而言之，需选择性价比**的机柜。服务器及外设更换很快，但好的机柜要用很长时间。比较机柜的优劣，关键是比较几个公认的性能指标。

部分型号：

PL140606C510S
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PL140806C510S
PL140806C500S
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