In order to combine multiple mini NAS of Benbo into one and reduce maintenance costs, we purchased a Vulcan D1581 motherboard, matched with an eight bay Mini NAS chassis, and assembled an eight bay machine.
Note 1: Selection of motherboard
In order to imitate Mugujun's All IN ONE machine, this blog also plans to build a multi-core PVE machine with a raid5 disk array.
It happened to be learned from MJJ Slag Group that D1581, a 16 core 32 thread CPU, is very cheap to integrate with its motherboard, and can also use REG ECC memory, so the cost can be reduced sufficiently.
There is no choice for D1581 motherboard. Vulcan (600 – 1000 pieces) or a manufacturer's full function motherboard (with IPMI, 2000+) must choose the former in order to reduce costs.
Vulcan has two products, including the expensive model with two 8087 interfaces, which can directly transfer out eight SATA interfaces. The two 8087 interfaces eliminate the adapter card and reduce the cable interleaving, so the more expensive Vulcan is selected.
Note 2: Radiator selection
Zhiqiang D1581 is FBGA packaged, and the CPU is directly planted and welded to the motherboard.
The FBGA CPU has no base, which also brings a problem: because the height of the base is less Most of the 115x heat sinks with screws cannot contact the CPU surface 。
Since it is difficult to find the heat dissipation by screwing the screws, can we replace it with the general 115x snap in heat dissipation? The answer is yes, but not absolutely. Due to the design problem of Vulcan D1581, there are several highly conflicting components near the 115x radiator mounting holes, as shown below:
Vulcan gave each motherboard a snap tower for heat dissipation as standard configuration, which is the reason. After all, heat dissipation is hard to find.
Since this blog is equipped with a Mini 8-bay chassis, the snap tower cooling is directly excluded because of the height conflict.
After many searches, we finally chose the ID-COOLING is50x radiator. This is a radiator that meets the needs of ITX, and its full height is only 50mm.
Of course, after getting the radiator, Direct installation is not possible. Because of the height problem, even if the screw is screwed to the bottom, the bottom of the radiator cannot reach the CPU 。
Note 3: Installing the radiator
As mentioned above, the is50x cannot reach the CPU. There are two solutions:
Method 1: Adjust the fastener installation position
Adjust the fastener installation position from the bottom of the radiator to the top, as shown in the following figure:
If there are countersunk screws+nuts, they can be fixed through the holes. This blog demonstration uses the method of binding.
This installation method can offset the height of a CPU base, which can be installed using the original screws.
Method 2: Install fasteners reversely and remove the east to supplement the west
It is accidentally found that the fixing screw of is50x original fan is Full thread screw And can just be screwed into the fastener.
It is not difficult to find that the radiator can be fixed successfully by screwing in the original fan screws when the fasteners are installed reversely, as shown in the following figure:
Since the original fan is not intended to be used, the screws can be borrowed to fix the radiator, and the east wall can be replaced by the west wall.
Note 4: Chassis selection
The Toplon 8-bay Nas chassis is used in this blog's installation machine, and this blog received one at Xianyu at the price of 599 with 350w power supply.
The reason for choosing this chassis is very simple, because there is no choice.
Note 5: Soft Routing
After the PVE is installed, a 2C2G virtual machine is allocated and the x86 OpenWrt image is loaded. Unlike other people, this blog does not engage in the side routing of Aikuai+OpenWrt. Instead, it directly uses OpenWrt as the main route, which is enough.
Previous OpenWrt secondary router assigns public IPV6 address The limitations of this blog's network environment have been described, and will not be described here.
The motherboard has two network ports, one for the OpenWrt Wan port and the other for the OpenWrt Lan port. The network structure is shown in the figure below:
At present, it is enough.
Note 6: Fan
The chassis is equipped with two 9025 fans. At the lowest speed, the sound is still like an airplane taking off.
In order to avoid being noisy, two Limin 9015 fans worth dozens of yuan were replaced, and the speed was fixed at 35%.
The fan speed control temperature source in the BIOS only supports the CPU temperature, so the fan speed of the fixed chassis is actually a last resort, but it is found that the effect is good, the sound is basically inaudible, and the hard disk temperature is not high (four, positions are 0 – 3).
