Powering Off The System For Power Centerplane Replacement - Sun Microsystems Sun Fire E25K Service Manual

15.1 Powering Off the System for Power
Centerplane Replacement
Caution – The power centerplane is NOT a hot-swappable component. This
procedure requires a complete shutdown of the domains and SCs, and disconnection
of all AC power to the system.
Since the system must be powered off, the operating system and all of the domains
must be systematically brought down and then halted.
1. As a superuser on the domains, systematically shut down all running domains
by typing:
domain_name# shutdown -y -g seconds -i 0
where seconds is the amount of time before shutdown.
2. On the main SC, power off the domain hardware by typing:
sc% poweroff
This command powers off the entire system with the exception of the power
supplies, fans, and the SCs. Refer to poweroff(1M) for more information.
3. Shut down the System Control boards by doing the following:
As a superuser on the spare SC, shut down the spare SC by typing:
I
sc_spare# shutdown -y -g seconds -i 0
where seconds is the amount of time before shutdown.
On the main SC, power off the spare SC by typing:
I
sc% poweroff SCx
where x is 0 of 1, dependent upon which SC is the spare.
15-2 Sun Fire E25K/E20K Systems Service Manual • April 2004