LSI Ultra320 SCSI Host, (IR), Device, Device, Peripheral, PCI Express, Host Adapter, Internal SCSI, PCI and PCI-X, Integrated RAID, Integrated Striping (IS)

Host	The computer system in which a SCSI host adapter is installed. It uses
	the SCSI host adapter to transfer information to and from devices
	attached to the SCSI bus.
Host Adapter	A circuit board or integrated circuit that provides a device connection to
	the host.
Integrated RAID	The LSI Logic Integrated RAID solution provides either the
(IR)	Integrated Mirroring (IM) solution, which provides features of RAID 1 and
	RAID 1E, or the Integrated Striping (IS) solution, which provides features
	of RAID 0.

Integrated Mirroring (IM)

The LSI Logic Integrated Mirroring (IM) solution provides features of RAID 1 and RAID 1E. The IM feature provides data protection for the system boot volume to safeguard critical information such as the operating system on servers and high performance workstations. The IM feature gives customers a robust, high-performance, fault-tolerant solution that is less expensive than a dedicated RAID controller.

Integrated Striping (IS)

The LSI Logic Integrated Striping (IS) solution provides features of RAID

0.The IS feature is a low-cost solution with many of the features of a more expensive RAID striping solution. A single IS logical drive may be conﬁgured as the boot disk or as a data disk.

Internal SCSI	A SCSI device installed inside the computer cabinet. These devices are
Device	connected to one another with an unshielded ribbon cable.
PCI and PCI-X	Peripheral Component Interconnect. A high performance local bus
	speciﬁcation that allows connection of devices directly to computer
	memory. The PCI Local Bus allows transparent upgrades from a 32-bit
	data path at 33 MHz to a 64-bit data path at 33 MHz; from a 32-bit data
	path at 66 MHz to a 64-bit data path at 66 MHz; and from a 32-bit data
	path at 133 MHz to a 64-bit data path at 133 MHz (1064 Mbytes/s peak).
PCI Express	PCI Express is the third generation high performance I/O bus that
	interconnects peripheral devices. PCI Express replaces parallel PCI bus
	with a highly scalable, fully serial interface. PCI Express takes advantage
	of recent advances in point-to-point interconnects, switchbased technology,
	and packetized protocol to deliver new levels of performance and features.
Peripheral	A piece of hardware (such as a disk drive, printer, or CD-ROM) used with
Device	a computer and under the computer’s control. SCSI peripheral devices
	are controlled through a SCSI host adapter.

A-2	Glossary of Terms

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