E

 

electronically

A memory chip typically used to store configuration information. See Non-Volatile Random

erasable

Access Memory (NVRAM).

programmable

 

read-only

 

memory

 

(EEPROM)

 

external SCSI

A SCSI device installed outside the computer cabinet. External SCSI devices are connected in

device

a chain using shielded cables.

F

 

Fast SCSI

A standard for SCSI data transfers. It allows a transfer rate of up to 10 MBytes/sec over an 8-bit

 

SCSI bus, and up to 20 MBytes/sec over a 16-bit SCSI bus.

FCC

Federal Communications Commission.

firmware

Software that is permanently stored in ROM. In the case of PDC, it can be accessed during boot

 

time without the aid of an operating or file system.

H

 

hard disk

A rigid disk permanently sealed into a drive cartridge. A hard disk can store very large amounts

 

of information.

host

The computer system in which a SCSI host bus adapter is installed. It uses the SCSI host bus

 

adapter to transfer information to and from devices attached to the SCSI bus.

host bus adapter

A circuit board and/or integrated circuit device that provides a SCSI bus connection to the

 

computer system.

I

 

internal SCSI

A SCSI device installed inside the computer cabinet. These devices are connected in a chain

device

using an unshielded ribbon cable.

interrupt request

A path through which a device can get the immediate attention of the computer’s CPU. The

channel (IRQ)

PCI bus assigns an IRQ path for each SCSI host bus adapter.

K

 

KByte (kilobyte)

A measure of computer storage equal to 1024 bytes.

L

 

logical unit

A subdivision, either logical or physical, of a SCSI device. Most devices have only one logical

 

unit, but up to sixteen are allowed for a 16-bit SCSI bus and eight for an 8-bit SCSI bus.

logical unit

An encoded three-bit number for the logical unit.

number (LUN)

 

Low Voltage

A robust design methodology that improves power consumption, data integrity, cable lengths,

Differential

and support for multiple devices while providing a migration path for increased I/O

 

sperformance.

LVD

See Low Voltage Differential.

M

 

main memory

The part of a computer’s memory that is directly accessible by the CPU (usually synonymous

 

with RAM).

mainboard

A large circuit board that holds RAM, ROM, the microprocessor, custom integrated circuits,

 

and other components that make a computer work. It also has expansion slots for host bus

 

adapters and other plug-in boards.

78 Glossary

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HP Ultra320 A7173A manual Eeprom
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Ultra320 A7173A specifications

The HP Ultra320 A7173A is a high-performance Storage Area Network (SAN) component, widely recognized for its reliability and efficiency in data storage solutions. Designed to support the demands of enterprise-level applications, this SCSI (Small Computer System Interface) controller excels in providing fast and reliable data transfer, making it a preferred choice for businesses that require robust storage solutions.

One of the standout features of the A7173A is its ultra-fast data transfer rate. It is capable of achieving speeds of up to 320 MB/s, which is made possible through the Ultra320 SCSI technology. This speed enhancement is crucial for applications requiring quick access to large volumes of data, thus improving overall system performance. The controller maintains compatibility with previous SCSI standards, allowing for interoperability in diverse environments and ensuring that organizations can leverage their existing infrastructure.

The A7173A is built on advanced technologies that enhance its performance and reliability. These include intelligent data buffering and error correction mechanisms, which minimize the likelihood of data loss and improve the integrity of information during transfers. Additionally, the controller features multiple device connections, accommodating up to 15 devices on a single chain. This scalability offers flexibility in expanding storage solutions based on organizational needs.

Another significant characteristic of the HP Ultra320 A7173A is its support for a wide range of operating systems. The controller is versatile, allowing it to integrate seamlessly with numerous enterprise platforms. This broad compatibility ensures that IT departments can deploy the A7173A within their existing environments without major adjustments or additional costs.

Moreover, the A7173A comes with comprehensive management features, enabling administrators to monitor and optimize storage performance effectively. These features help in anticipating issues before they escalate, thereby minimizing downtime and facilitating smoother operations.

In essence, the HP Ultra320 A7173A is a comprehensive SAN solution that offers exceptional speed, reliability, and scalability. Its advanced technologies and versatile compatibility make it an ideal component for organizations looking to optimize their data storage infrastructure while ensuring robust performance across diverse applications. Investing in the A7173A can lead to marked improvements in data management, ultimately contributing to business efficiency and continuity.
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