National Instruments NI PCIe-8360 用户手册

© National Instruments Corporation

1.

Power on all of the expansion chassis in any order you choose.

2.

Power on the host.

Typical PCI-PCI bridges are used to add PCI devices to a PCI hierarchy in 
which all the bridges and devices are contained within a single chassis. 
Because of this, BIOSes and operating systems make the assumption that 
all PCI devices in the entire hierarchy will be available as soon as code 
execution begins at power-up time. This assumption means that all of the 
expansion chassis must be turned on before the host PC for the BIOS and 
OS to correctly configure a MXI-Express system.

There are no requirements on how MXI-Express expansion chassis are powered up 

relative to each other, as long as they are all on before the computer is powered on.

Because operating systems and drivers commonly make the assumption 
that PCI devices will be present in the system from power-up to 
power-down, it is important not to power off the expansion chassis until 
after the host PC is powered off. Powering off the expansion chassis while 
the host is still on can cause crashes or hangs. The order in which expansion 
chassis are powered off, relative to each other, is not important.