Sun Microsystems Fire 880, Руководство пользователя

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Chapter 1 System Overview 15
Hot-Pluggable Disk Drives and PCI Cards
Sun Fire 880 system hardware is designed to support hot-plugging of internal disk
drives and PCI cards. With the proper software support, you can install or remove
these components while the system is running. Hot-plug technology significantly
increases the system’s serviceability and availability, by providing the ability to:
■
Increase storage, and I/O capacity dynamically to handle larger work loads and
improve system performance
■
Replace disk drives and PCI cards without service disruption
You can hot-plug any standard PCI card, provided a suitable software driver exists
for the Solaris operating environment, and the driver supports PCI hot-plug
operations. In addition, the card must comply with the PCI Hot-Plug Specification
Revision 1.1, and the system must be running the Solaris 8 7/01 operating
environment or a subsequent release that supports Sun Fire 880 PCI hot-plug
operations.
PCI hot-plug procedures may involve software commands for preparing the system
prior to removing a card and for reconfiguring the operating environment after
installing a PCI card. For more information about PCI hot-plug procedures, see
“About Hot-Pluggable and Hot-Swappable Components” on page 144.
Caution –
Do not attempt to hot-plug a PCI card until you are certain that its device
drivers support PCI hot-plug operations; otherwise, you may cause a system panic.
For a list of Sun PCI cards and device drivers that support PCI hot-plug operations,
see the
Sun Fire 880 Server Product Notes .
For additional information about the system’s hot-pluggable components, see
“About Hot-Pluggable and Hot-Swappable Components” on page 144.
N+1 Power Supply Redundancy
The system can accommodate up to three power supplies. All system configurations
require a minimum of two power supplies. An optional third supply can be used to
provide N+1 redundancy, allowing the system to continue operating should one of
the power supplies fail.
For more information about power supplies, redundancy, and configuration rules,
see “About Power Supplies” on page 73.