Server hard disk number sequential display method and device

The invention discloses a server hard disk number sequential display device, comprising three 12-port direct connection backplanes: BP1, BP2 and BP3, an Expander card and an SAS/Raid card. The BP1, BP2 and BP3 are sequentially connected with a downlink Mini SAS HD interface of the Expander card, and the uplink Mini SAS HD interface of the Expander card is connected with the SAS/Raid card, which isconnected with a CPU located on a main board. The direct-connected backplane with the Expander card is designed to replace the current Expander backplane to solve the problem of hard disk number discontinuity in the system, and avoid a condition that the hard disk failure in the maintenance process can not be accurately located. The problem of hard disk number discontinuity in a 4U server systemis solved, the accuracy and efficiency of post-maintenance is ensured, and the cost performance of products is improved. 本发明公开了种服务器硬盘编号按顺序显示装置，包括三块12口直连背板：BP1、BP2和BP3，Expander卡和SAS/Raid卡；所述BP1、BP2和BP3依次与Expander卡的下行Mini SAS HD