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Chapter 4 FRU Replacement Preparation 4-3
■ Hot replacement
A target FRU is operated while the domain to which the FRU belongs is stopped.
Depending on the target FRU, there are two cases as follows:
■ Operated with XSCF commands.
■ Operated directly, not by using XSCF commands.
■ Cold replacement
After all the domains are stopped and then the server is powered off, a FRU is operated.
Note – To activate a hardware RAID boot volume after replacing the RAID-capable IOUA
on an M8000/M9000 server, see Section 13.5, “Reactivating a Hardware RAID Boot
Volume” on page 13-25.
Note – Do not operate a target FRU while the OpenBoot PROM is running (the ok prompt
is displayed). After stopping the relevant domain (power-off) or starting the Oracle Solaris
OS, operate the target FRU.
4.2 Active Replacement
In active replacement the Oracle Solaris OS must be configured to allow the component to be
replaced. Active replacement has four stages:
■ Section 4.2.1, “Disconnecting a FRU from a Domain” on page 4-4
■ Section 4.2.2, “Disconnecting and Replacing a FRU” on page 4-6
■ Section 4.2.3, “Configuring a FRU into a Domain” on page 4-8
■ Section 4.2.4, “Confirming the Hardware” on page 4-9
Note – If a hard disk drive is a nonmirrored boot device, it must be replaced according to
the cold replacement procedure.
Note – If a hard disk drive is in a mirrored configuration, active replacement can be
performed on the failed drive because the mirrored hard disk drive continues to be online and
functioning.