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4-2 SPARC Enterprise M3000 Server Service Manual • November 2009
4.2 FRU Replacement and Installation
Methods
This section explains how to replace and install FRUs.
4.2.1 FRU Replacement
There are three methods of replacing FRUs, as follows:
■ Active replacement
A target FRU is operated while the Solaris OS of the domain to which the FRU
belongs is operating.
The target FRU is operated by using Solaris OS commands or XSCF commands.
Because the power supply unit (PSU) and fan unit (FAN) do not belong to any
domain, they are operated by using XSCF commands regardless of the operating
state of the Solaris OS.
Note – The hard disk drive has a redundant configuration only when disk mirroring
software is used.
Note – If a hard disk drive is an unmirrored boot device, it must be replaced by
using the cold replacement procedure. However, if a boot device can be
disconnected by means of a Solaris OS function or disk mirroring software function,
active replacement can also be performed. The procedure for disconnecting a hard
disk drive varies depending on the software being used. For details, see the manuals
for the relevant software.
■ 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:
■ Power supply unit/Fan unit: operated with XSCF commands.
■ Hard disk drive: operated directly, not by using XSCF commands.