SCSI

in full Small Computer System Interface

Once common standard for connecting peripheral devices (disks, modems, printers, etc.) to small and medium-sized computers. SCSI has given way to faster standards, such as Firewire and USB.

SCSI

(Small Computer System Interface) Pronounced "scuzzy." SCSI is a hardware interface for up to 15 peripheral devices attached to a single PCI board called a "SCSI host adapter" that plugs into the motherboard. SCSI devices were popular in the mid-1980s and 1990s for two reasons. SCSI disks were known to be very robust and were used in servers and storage arrays. SCSI was also a way to add several peripheral devices to personal computers. Subsequently, IDE drives (ATA) became highly reliable, and USB allows 128 devices to plug in.

SCSI Is a Mini-LAN
SCSI uses a bus structure and functions like a mini-LAN connecting 16 devices, but the host adapter counts as one device. SCSI allows any two devices to communicate at one time (host to peripheral, peripheral to peripheral).

Host adapters are also available with two controllers that support up to 30 peripherals. Introduced in 1986 and originally developed by Shugart Associates (see SASI), SCSI is widely used in servers, mainframes and storage area networks (SANs).

The Daisy Chain
SCSI peripherals are daisy chained together. Each device has a second port used to connect the next device in line. An earlier advantage of using SCSI in a desktop PC was that a scanner and several drives (CD-Rs, Zip, hard disks, etc.) could be added to one SCSI cable chain. However, this became less important since the advent of the USB interface. For more details, see SCSI signaling.

RAID Was Originally SCSI
Until the late 1990s, SCSI hard disks were the only ones used in RAID configurations for improved performance or fault tolerance. Since the advent of IDE RAID controllers, SCSI and IDE have become more equalized, although SCSI continues to be the drive interface of choice in the server market. See SCSI signaling, SCSI connectors, RAID, SAS and SCSI switch.

A SCSI Chain

The advantage of SCSI is that several peripherals can be daisy chained to one host adapter, using only one slot in the bus. For more details about SCSI specifications, signaling and connectors, see SCSI signaling and SCSI connectors.

SCSI [′skəz·ē]

(computer science)

small computer system interface

SCSI - Small Computer System Interface

Mentioned in	?		References in periodicals archive	?		Encyclopedia browser	?		Full browser	?
No references found	At the micro-level, he dissects disk drives, and subsystem and Small Computer Systems Interface (SCSI) architecture. Storage Networking Fundamentals; An Introduction to Storage Devices, ... by SciTech Book News After several months of testing and solidifying the standards, the IETF IP Storage Working Group announced the approval of Fibre Channel over TCP/IP (FCIP), and the Internet Fibre Channel Protocol (iFCP) in late January, and most recently announced the Internet Small Computer Systems Interface (iSCSI) in early February 2003. The SNIA Supports IETF's Approval of IP Storage Standards; IP Storage ... by Business Wire Honeywell's SSMMUs will interface with the International Space Station's host computer via a Small Computer Systems Interface (SCSI) with all transmitted data being stored in Honeywell's state-of-the-art flash memory components. Honeywell Receives $9.4 Million Award To Upgrade Memory Hardware For ... by Business Wire	Sluzhilye Liudi Sly, Christopher Slye, Maud slype Sm SMA SMA connector smack smail Smaland Småland Smale, John Smale, Stephen SMALGOL Smalian's formula Smalininkai small small arm Small Arms small bindweed Small Business Edition Small Business Server small calorie small circle small computer system interface Small Computer Systems Interface Small Deeds Theory Small Digital Computers small diurnal range Small Earless Owls Small Group small hail Small Holding small ice floe Small Intestine small ion Small Magellanic Cloud small nucleolar ribonucleic acid small of the stock Small Outline DIMM small outline gull-wing small perturbation small polaron small print Small Public Schools Small Sample small scale small talk small tropic range Small, Albion W. Small, Albion Woodbury	Small Commercial Vessel Small Communities Development Block Grant Small Communities Environmental Infrastructure Group Small Community Air Service Development Small Community Air Service Development Program Small Community Network Small Company Sharewatch Small Component Test Installation Small Compression Ignition Engine Emissions/Fuel Small Computer and Office Systems Small Computer Engineering Center Small Computer Network Company Small Computer Peripheral Interface Small Computer Program Small Computer Requirements Contract Small Computer Requirements Contract Follow-On Small Computer Serial Interface Small Computer Standard Interface Small Computer Support Bulletin Small Computer Support Center Small Computer System small computer system interface small computer system interface small computer system interface Small Computer System Interface 2 Small Computer System Interface Trade Association Small Computer Systems Interface Small Computer Systems Interface Filing System Small Computer Technical Center Small Computer/Office Automation Services Small Computers Small Congenital Melanocytic Naevus Small Congregations Resource Fund Small Conversion Data Small Conversion Device Small Core Memory Small Coronary Artery Small Corporate Offering Registration Small Corporate Offering Registration Small Corporate Offering Registrations Small Countries Small Countries Small Countries Financial Management Centre Small County Road Assistance Program Small craft Small craft advisory Small Craft Advisory for Hazardous Seas Small Craft Advisory for Rough Bar Small Craft Advisory for Winds Small Craft Assets, Training, and Turnover of Resources Small Craft Harbour and Real Property Small Craft Harbours Branch Small Craft Harbours Revitalization Program

Mentioned in

References in periodicals archive

Encyclopedia browser

Full browser

No references found

At the micro-level, he dissects disk drives, and subsystem and Small Computer Systems Interface (SCSI) architecture.

Storage Networking Fundamentals; An Introduction to Storage Devices, ... by SciTech Book News

After several months of testing and solidifying the standards, the IETF IP Storage Working Group announced the approval of Fibre Channel over TCP/IP (FCIP), and the Internet Fibre Channel Protocol (iFCP) in late January, and most recently announced the Internet Small Computer Systems Interface (iSCSI) in early February 2003.

The SNIA Supports IETF's Approval of IP Storage Standards; IP Storage ... by Business Wire

Honeywell's SSMMUs will interface with the International Space Station's host computer via a Small Computer Systems Interface (SCSI) with all transmitted data being stored in Honeywell's state-of-the-art flash memory components.

Honeywell Receives $9.4 Million Award To Upgrade Memory Hardware For ... by Business Wire

Small Commercial Vessel
Small Communities Development Block Grant
Small Communities Environmental Infrastructure Group
Small Community Air Service Development
Small Community Air Service Development Program
Small Community Network
Small Company Sharewatch
Small Component Test Installation
Small Compression Ignition Engine Emissions/Fuel
Small Computer and Office Systems
Small Computer Engineering Center
Small Computer Network Company
Small Computer Peripheral Interface
Small Computer Program
Small Computer Requirements Contract
Small Computer Requirements Contract Follow-On
Small Computer Serial Interface
Small Computer Standard Interface
Small Computer Support Bulletin
Small Computer Support Center
Small Computer System
small computer system interface
small computer system interface
small computer system interface
Small Computer System Interface 2
Small Computer System Interface Trade Association

Small Computer Systems Interface

Small Computer Systems Interface Filing System
Small Computer Technical Center
Small Computer/Office Automation Services
Small Computers
Small Congenital Melanocytic Naevus
Small Congregations Resource Fund
Small Conversion Data
Small Conversion Device
Small Core Memory
Small Coronary Artery
Small Corporate Offering Registration
Small Corporate Offering Registration
Small Corporate Offering Registrations
Small Countries
Small Countries
Small Countries Financial Management Centre
Small County Road Assistance Program
Small craft
Small craft advisory
Small Craft Advisory for Hazardous Seas
Small Craft Advisory for Rough Bar
Small Craft Advisory for Winds
Small Craft Assets, Training, and Turnover of Resources
Small Craft Harbour and Real Property
Small Craft Harbours Branch
Small Craft Harbours Revitalization Program

SCSI (redirected from Small Computer Systems Interface)

SCSI

SCSI
(redirected from Small Computer Systems Interface)