Macase Technology Sharing: How do newbies quickly understand the server chassis?

  2019-08-10  Macase  

Generally speaking, everyone thinks that the server chassis is very large and very spacious. In fact, this concept is completely incorrect. The server chassis has very obvious features. As for the volume, it is very large and small.
First, the server chassis must be able to fit into the cabinet. A standard cabinet is 19 inches by 482.6 mm wide, so the width of the chassis is almost fixed, typically around 17 inches, with handles and rails mounted on both sides. The height of the chassis is also specified. U(Unit) is used as the unit. 1U is 44.5mm. The height of the chassis is divided into 1U-4U according to the specifications.
Look at a 4U chassis first
       Height 7.0" (178mm), width 17.2" (437mm), depth 25.5" (648mm), weight 58 lbs (26.3kg), 3 5 inch positions, 8 3.5-inch hot-swappable hard drive bays, 800W dual redundant power supply 5 5000-rpm temperature-controlled fans. In order to ensure stability and prevent power failure, the server chassis uses redundant power supplies, that is, 2-4 independent power supplies. Multiple power supplies work at the same time. If there is one power supply. If a fault occurs, the remaining power supplies can continue to ensure that the host works normally. The faulty power supply can also be hot swapped and replaced in the power-on state.
       The indicators on the front of the server chassis, first look at the top row, from left to right, the first and second are common power and hard disk indicators, the third and fourth are the network card working state, the server motherboard is generally equipped with dual network cards, A light can display the working status of two network cards. If it is a normal chassis, then only the back of the chassis is the hard disk working status light. Each hard disk has two independent indicators, one is the working indicator. One is that the fault indicator is hot-swapped into the hard disk frame. If there is a hard disk failure, all of them can be plugged in and replaced in the power-on state. The plastic and the memory area are separated by a plastic cover, and the heat is directly discharged. In order to reduce the temperature of other parts of the chassis, the fan is hot-swappable. In this case, even the fan can be replaced directly. No need to shut down, no screw is the introduction of the server chassis. Welcome to consult!