Exam DES-1D12 topic 1 question 59 discussion

One of the differences with the 80 platform is a separate bus, called bus 99 that is specific to the DPE.

Reference: https://www.delltechnologies.com/resources/en-us/asset/white-papers/products/storage/h17782-dell-emc-unity-xt-introduction-to-the-platform.pdf The DPE on 480/F, 680/F, and 880/F systems is internally connected to Bus 99 which is the separate bus than the first SAS expansion port is connected to which is Bus 0. Therefore, the DPE is recognized by the system as “Bus 99 Enclosure 0” while the first DAE connected to the first SAS expansion port would be “Bus 0 Enclosure 0”. This is different than X00/F, X50F, and 380/F systems. Furthermore, this means that the twenty-five drives in front of the DPE for 480/F, 680/F, and 880/F systems are internally recognized as “Bus 99 Enclosure 0 Drive 0” – “Bus 99 Enclosure 0 Drive 24”. Although in Unisphere, the drives are seen “DPE Drive 0” – “DPE Drive 24”.

D Bus 99 for DPE on Unity XT Bus 99 Enclosure 0 PS Slot 0 Info: Associated SP : SP_A(0) State : OK SubState : NO FAULT

D is Correct The DPE on 480/F, 680/F, and 880/F systems is internally connected to Bus 99 which is a separate bus than the first SAS expansion port that is connected to Bus 0. Therefore, the DPE is recognized by the system as Bus 99 Enclosure 0 while the first DAE connected to the first SAS expansion port would be Bus 0 Enclosure 0. This is different than X00/F, X50F, and 380/F systems. Furthermore, this means that the twenty-five drives in front of the DPE for 480/F, 680/F, and 880/F systems are internally recognized as Bus 99 Enclosure 0 Drive 0 – Bus 99 Enclosure 0 Drive 24. In Unisphere, the drives are seen DPE Drive 0 –DPE Drive 24

99 is true

One of the differences with the 80 platform is a separate bus, called bus 99 that is specific to the DPE. D is the correct!

d is correct