Model : IW-RS216-07 Slim Hybrid Backplane User Manual
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host controllers through sideband bus of Oculink or SlimSAS cables. Whenever the NVMe
host controller support VPP over I2C, the RED LEDs behave Locate, Fail and Rebuild
signals following VPP signals on the I2C bus. The Green LEDs (for Activity) behave
according to the signal from P11 (Activity) of the disk connectors.
Examples of NVMe connections to Broadcom RAID/HBA controller. Each pair of VPP over
I2C signal supports 2 pieces of NVMe disks LED management. The I2C bus is leaded to
odd-number NVMe connector (Oculink or SlimSAS) to manage its corresponding and the
following NVMe disks. For example, NVMe1 and NVMe2 LED management signal is form
NVMe1 connector’s sideband I2C bus, NVMe3 and NVMe4 LED management signal is
from NVMe3 connector’s sideband I2C bus and …etc.
System Alarm LED
There is a FAIL LED design on the Backplane to indicate Over-Temperature for indicating
system fault.
Overheat:
When the system temperature at the backplane area is going beyond 45
°C
the Temp Fail
triggered and Fail LED blinks in 2Hz rate. Goes off when temperature is going under 45
°C.
