By following this checklist, you will be able to select a cabinet that matches your device priorities and will not exceed your budget. The consideration should be safety. Putting mission-critical devices into a locked cabinet makes it easier for network administrators, limiting the number of people who can open the cabinet.

　　列出所有装在机柜内的设备和它完整的丈量数据：高、长、宽、重量。这些设备的总高度将终决定可以把多少设备装进机柜。显然，高的机柜能装进更多的设备，而且更省地方。

　　List all devices installed in the cabinet and their complete measurement data: height, length, width, weight. The total height of these devices will ultimately determine how many devices can be packed into the cabinet. Obviously, taller cabinets can hold more equipment and save space.

　　当然尽量利用机柜的高度不是考虑，机柜的后部也有很大的地方可以利用。这就是要丈量机柜深度的原因。选择较深的机柜，可以把两套设备面对面地装进去，从而装置更多的设备。

　　Of course, the height of the cabinet is not considered, the rear of the cabinet also has a large space to use. This is why you need to measure the depth of the cabinet. If you choose a deeper cabinet, you can put two sets of devices face to face, so that more devices can be installed.

　　采用上述方式可在机柜中装入两排设备，一排从机柜的前门装卸，另一排从后门装卸。机柜应有可调节的位置。计算完了机柜空间之后，还要考虑房间的大小。不会愿意看到塞满机柜后不久就发现还要再装进一些设备。

　　Two rows of devices can be installed in the cabinet. One row is loaded through the front door of the cabinet, and the other row is loaded through the rear door. The cabinet must have adjustable positions. After calculating the cabinet space, consider the size of the room. You don't want to fill a cabinet and then have to put some more equipment in.

　　一旦你把机柜买来并安装完，这些多出的设备往往就出现了所以，作为一条基本原则，机柜高度要多出20%、30%以备系统扩充。这些空间也改善了设备的通风条件。

　　Once you buy a cabinet and install it, the extra equipment tends to be there. So, as a general rule of thumb, you need 20, 30 percent more height for system expansion. These Spaces also improve the ventilation of the facility.

　　装有支架的设备不需要考虑宽度，因为它按机柜的宽度设计的但对于不能安支架的服务器及其他外设，宽度是不能忽视的。机柜里面，设备重量决定选择的滑动架是规范的还是加重的也决定其它一些附件的选择。

　　A device with a stand does not need to worry about width because it is designed for the width of the cabinet, but for servers and other peripherals without a stand, width is not negligible. Inside the cabinet, the weight of the equipment determines whether the sliding frame selected is standard or weighted and also determines the selection of other accessories.

　　如果您对此还有什么不理解的地方的话，欢迎点击 //www.aqfitlab.com进行咨询！

　　If you still have what not understand place, please visit //www.aqfitlab.com for consultation!