Raid 0,1 Internal Hard Drives; Pci Subsystem; Power Supplies - Sun Microsystems Sun Fire V445 Server Administration Manual

RAID 0,1 Internal Hard Drives

Internal disk storage is provided by up to eight 2.5 inch (5.1 cm) high, hot-pluggable,
SAS disk drives. The basic system includes a SAS disk backplane that accommodates
eight disks capable of data transfer rates of up to 320 megabytes per second. See
"About the Internal Disk Drives" on page 87 and "Locating Back Panel Features" on
page 16.
External multidisk storage subsystems and redundant array of independent disks
(RAID) storage arrays can be supported by installing peripheral component
interconnect (PCI) host adapter cards along with the appropriate system software.
Software drivers supporting SCSI and other types of devices are included in the
Solaris OS. In addition, the system supports internal hardware mirroring (RAID 0,1)
using the on-board SAS controller. See "About RAID Technology" on page 120.

PCI Subsystem

System I/O is handled by two expanded Peripheral Component Interconnect (PCIe)
buses and two PCI-X buses. The system has eight PCI slots: four 8 lane PCIe slots
(two of which also support 16 lane form factor cards) and four PCI-X slots. The PCI-
X slots operate at up to 133 MHz, are 64-bit capable, and support legacy PCI devices.
All PCI-X slots comply with PCI Local Bus Specification Rev 2.2 and PCI-X Local
Bus Specification Rev 1.0. All PCIe slots comply with PCIe Base Specification r1.0a
and PCI Standard SHPC Specification, r1.1. For additional details, see "About the
PCI Cards and Buses" on page 81.

Power Supplies

The basic system includes four 550-watt power supplies, each with its own cooling
fan. The power supplies are plugged into a separate power distribution board (PDB).
This board is connected to the motherboard through 12-volt high current bus bars.
Two power supplies provide sufficient current (1100 DC watts) for maximum
configuration. The other power supplies provide 2+2 redundancy, enabling the
system to continue operating if up to two power supplies fail.
The power supplies are hot-swappable – you can remove and replace a faulty power
supply without shutting down the system. With four separate AC inlets you can
wire the server with a fully redundant AC circuit. A failed power supply does not
need to remain installed to sustain proper cooling. For more information about the
power supplies, see "About the Power Supplies" on page 89.
Chapter 1 System Overview 5