Hard disk backboard lamp control device and method
A technology for hard disk backplane and lamp control, which is applied in the server field to achieve the effects of simple structure, wide application prospects and improved competitiveness
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Embodiment 1
[0033] This embodiment provides a hard disk back panel light control device, such as figure 1 As shown, includes the following structure:
[0034] The VPP signal of the CPU is connected to the MUX chip (multiplexing chip) and divided into two channels. The select control pin of the MUX depends on the shape of the connected NVME hard disk. If it is a x4 NVME hard disk, the select pin is switched to A1, and then connected to On the A0 pin of the CPLD on the backplane, the traditional backplane solution is used to analyze the VPP for lighting.
[0035] If the hard disk backplane is connected to x2 NVME hard disk, then after the backplane CPLD detects the status of the hard disk, it controls the select pin of the MUX to switch the VPP signal to A2. Then through the I2C switch, switch to two routes to the A1 and A2 pins of the backplane CPLD.
[0036] The 4x16port of the CPU can support a maximum of 32 x2 NVME hard disks. VPP0 can support 0-15 NVME hard disks, and VPP1 can suppor...
Embodiment 2
[0039] This embodiment provides a hard disk backplane light control method, including the following steps:
[0040] S1. The BMC recognizes the PCIE port number to which the CPU is currently connected through the plug connector.
[0041] S2. The BMC sends the port number to the control chip through I2C.
[0042] S3. The control chip analyzes the port number, and selects the hard disk light control signal access link according to the port number:
[0043] If the port number corresponds to a x4 NVME hard disk, then control the multiplexing chip to switch to the first pin;
[0044]If the port number corresponds to the x2 NVME hard disk, then control the multiplexing chip to switch to the second pin.
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