92-451: A very-high-density cable interconnect ( VHDCI ) is a 68-pin connector that was introduced in the SPI-2 document of SCSI -3. The VHDCI connector is a very small connector that allows placement of four wide SCSI connectors on the back of a single PCI card slot. Physically, it looks like a miniature Centronics type connector. It uses the regular 68-contact pin assignment. The male connector (plug)
184-462: A parallel bus design. Since 2005, SPI was gradually replaced by Serial Attached SCSI (SAS), which uses a serial design but retains other aspects of the technology. Many other interfaces which do not rely on complete SCSI standards still implement the SCSI command protocol ; others drop physical implementation entirely while retaining the SCSI architectural model . iSCSI , for example, uses TCP/IP as
276-404: A speculative land boom in the late 1880s, stimulating further expansion of the city. Fairmount College, which eventually grew into Wichita State University , opened in 1886; Garfield University, which eventually became Friends University , opened in 1887. By 1890, Wichita had become the third-largest city in the state after Kansas City , and Topeka , with a population of nearly 24,000. After
368-427: A target . The initiator sends a command to the target, which then responds. SCSI commands are sent in a Command Descriptor Block ( CDB ). The CDB consists of a one byte operation code followed by five or more bytes containing command-specific parameters. At the end of the command sequence, the target returns a status code byte, such as 00h for success, 02h for an error (called a Check Condition), or 08h for busy. When
460-586: A "LUN number" or "LUN id". In modern SCSI transport protocols, there is an automated process for the "discovery" of the IDs. The SSA initiator (normally the host computer through the 'host adaptor') "walk the loop" to determine what devices are connected and then assigns each one a 7-bit "hop-count" value. Fibre Channel – Arbitrated Loop (FC-AL) initiators use the LIP (Loop Initialization Protocol) to interrogate each device port for its WWN ( World Wide Name ). For iSCSI, because of
552-403: A 21-bit LBA address. The Read(10), Read(12), Read Long, Write(10), Write(12), and Write Long commands all contain a 32-bit LBA address plus various other parameter options. The capacity of a "sequential access" (i.e. tape-type) device is not specified because it depends, amongst other things, on the length of the tape, which is not identified in a machine-readable way. Read and write operations on
644-496: A brothel there from early 1874 to the middle of 1876. The area had a reputation for violence until lawmen like Wyatt stepped up enforcement, who officially joined the Wichita marshal's office on April 21, 1875. He was hired after the election of Mike Meagher as city marshal, making $ 100 per month. By the middle of the decade, the cattle trade had moved west to Dodge City . Wichita annexed Delano in 1880. Rapid immigration resulted in
736-526: A center of the industry that the Aeronautical Chamber of Commerce dubbed it the "Air Capital of the World" in 1929. Over the following decades, aviation and aircraft manufacturing continued to drive expansion of the city. In 1934, Stearman's Wichita facilities became part of Boeing , which would become the city's largest employer. Initial construction of Wichita Municipal Airport finished southeast of
828-485: A female householder with no husband present, and 37.5% were not families. About 31.1% of all households were made up of individuals, and 9.1% had someone living alone who was 65 or older. The average household size was 2.48, and the average family size was 3.14. The median age in the city was 33.9 years; 26.6% of residents were under the age of 18; 10.1% were between 18 and 24; 26.9% were from 25 to 44; 24.9% were from 45 to 64; and 11.5% were 65 or older. The gender makeup of
920-459: A much broader range of options for RAID subsystems together with the existence of nearline SAS (NL-SAS) drives. Instead of SCSI, modern desktop computers and notebooks typically use SATA interfaces for internal hard disk drives, with NVMe over PCIe gaining popularity as SATA can bottleneck modern solid-state drives . SCSI is available in a variety of interfaces. The first was parallel SCSI (also called SCSI Parallel Interface or SPI), which uses
1012-558: A population of 647,610 in 2020. It is located in south-central Kansas on the Arkansas River . Wichita began as a trading post on the Chisholm Trail in the 1860s and was incorporated as a city in 1870. It became a destination for cattle drives traveling north from Texas to Kansas railroads, earning it the nickname "Cowtown". Wyatt Earp served as a police officer in Wichita for around one year before going to Dodge City . In
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#17330848548761104-441: A separate race. The racial makeup (including Hispanics in the racial counts) was 63.39% (251,997) white , 10.95% (43,537) black or African-American , 1.33% (5,296) Native American , 5.09% (20,225) Asian , 0.12% (482) Pacific Islander , 7.41% (29,444) from other races , and 11.71% (46,551) from two or more races. The racial and ethnic makeup (where Hispanics are excluded from the racial counts and placed in their own category)
1196-410: A sequential access device begin at the current tape position, not at a specific LBA. The block size on sequential access devices can either be fixed or variable, depending on the specific device. Tape devices such as half-inch 9-track tape , DDS (4 mm tapes physically similar to DAT ), Exabyte , etc., support variable block sizes. On a parallel SCSI bus, a device (e.g. host adapter, disk drive)
1288-506: A town company, and surveyor Darius Munger built a log structure for the company to serve as a hotel, community center, and post office. Business opportunities attracted area hunters and traders, and a new settlement began to form. That summer, Mead and others organized the Wichita Town Company, naming the settlement after the Wichita tribe. In 1870, Munger and German immigrant William "Dutch Bill" Greiffenstein filed plats laying out
1380-453: A transport mechanism, which is most often transported over Gigabit Ethernet or faster network links. SCSI interfaces have often been included on computers from various manufacturers for use under Microsoft Windows , classic Mac OS , Unix , Amiga and Linux operating systems, either implemented on the motherboard or by the means of plug-in adaptors. With the advent of SAS and SATA drives, provision for parallel SCSI on motherboards
1472-522: A unified standard. In October 1981, the two companies agreed to co-develop SASI and present their standard jointly with ANSI. Until at least February 1982, ANSI developed the specification as "SASI" and "Shugart Associates System Interface". However, the committee documenting the standard would not allow it to be named after a company. Almost a full day was devoted to agreeing to name the standard "Small Computer System Interface", which Boucher intended to be pronounced "sexy", but ENDL's Dal Allan pronounced
1564-577: A year and 100 °F (38 °C) an average of 12 days a year. The minimum temperature falls to or below 10 °F (−12 °C) on an average 7.7 days a year. The hottest temperature recorded in Wichita was 114 °F (46 °C) in 1936; the coldest temperature recorded was −22 °F (−30 °C) on February 12, 1899 . Readings as low as −17 °F (−27 °C) and as high as 111 °F (44 °C) occurred as recently as February 16, 2021, and July 29–30, 2012 , respectively. Wichita receives on average about 34.31 inches (871 mm) of precipitation
1656-469: A year, most of which falls in the warmer months, and experiences 87 days of measurable precipitation. The average relative humidity is 80% in the morning and 49% in the evening. Annual snowfall averages 12.7 inches (32 cm). Measurable snowfall occurs an average of nine days per year with at least an inch of snow falling on four of those days. Snow depth of at least an inch occurs an average of 12 days per year. The average window for freezing temperatures
1748-435: Is Eastborough . Adjacent to the city's east side is Andover . McConnell Air Force Base is in the extreme southeast corner of the city. To the south, from east to west, lie Derby and Haysville . Goddard and Maize border Wichita to the west and northwest, respectively. Wichita lies within the humid subtropical climate zone ( Köppen Cfa ), typically experiencing hot, humid summers and cold, dry winters. Located on
1840-409: Is manufacturing , which accounted for 21.6% of area employment in 2003. Aircraft manufacturing has long dominated the local economy, and plays such an important role that it has the ability to influence the economic health of the entire region; the state offers tax breaks and other incentives to aircraft manufacturers. Healthcare is Wichita's second-largest industry, employing about 28,000 people in
1932-415: Is October 25 through April 9. Wichita is consistently ranked as one of the worst major cities in the nation for seasonal allergies, due largely to tree and grass pollen (partly from surrounding open plains and pastureland), and smoke from frequent burning of fields by the region's farmers and ranchers, driven by the strong Kansas winds. The Asthma and Allergy Foundation of America , ranked Wichita—out of
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#17330848548762024-421: Is a "virtual" disk—a stripe set or mirror set constructed from portions of real disk drives. The SCSI ID, WWN, etc. in this case identifies the whole subsystem, and a second number, the logical unit number (LUN) identifies a disk device (real or virtual) within the subsystem. It is quite common, though incorrect, to refer to the logical unit itself as a "LUN". Sometimes, redundantly, the actual LUN may be called
2116-427: Is a 5-bit field reported by a SCSI Inquiry Command ; defined SCSI Peripheral Device Types include, in addition to many varieties of storage device, printer, scanner, communications device, and a catch-all "processor" type for devices not otherwise listed. In larger SCSI servers, the disk-drive devices are housed in an intelligent enclosure that supports SCSI Enclosure Services (SES) . The initiator can communicate with
2208-487: Is a protocol that specifies how to transport SCSI commands over a reliable RDMA connection. This protocol can run over any RDMA-capable physical transport, e.g. InfiniBand or Ethernet when using RoCE or iWARP . USB Attached SCSI allows SCSI devices to use the Universal Serial Bus . The Automation/Drive Interface − Transport Protocol (ADT) is used to connect removable media devices, such as tape drives, with
2300-530: Is a set of standards for physically connecting and transferring data between computers and peripheral devices , best known for its use with storage devices such as hard disk drives . SCSI was introduced in the 1980s and has seen widespread use on servers and high-end workstations, with new SCSI standards being published as recently as SAS-4 in 2017. The SCSI standards define commands , protocols, electrical, optical and logical interfaces . The SCSI standard defines command sets for specific peripheral device types;
2392-416: Is considered to be the "father" of SASI and ultimately SCSI due to his pioneering work first at Shugart Associates and then at Adaptec , which he founded in 1981. A SASI controller provided a bridge between a hard disk drive's low-level interface and a host computer, which needed to read blocks of data. SASI controller boards were typically the size of a hard disk drive and were usually physically mounted to
2484-555: Is identified by a "SCSI ID", which is a number in the range 0–7 on a narrow bus and in the range 0–15 on a wide bus. On earlier models a physical jumper or switch controls the SCSI ID of the initiator ( host adapter ). On modern host adapters (since about 1997), doing I/O to the adapter sets the SCSI ID; for example, the adapter often contains a Option ROM (SCSI BIOS) program that runs when the computer boots up and that program has menus that let
2576-670: Is not a part of the Wichita MSA or Wichita-Winfield CSA, but, were it included, it would add an additional population of 64,511 as of 2010. It is the birthplace of famous restaurants such as White Castle and Pizza Hut . A survey of well-known Kansas-based brands conducted by RSM Marketing Services and the Wichita Consumer Research Center showed many of the top-25 Kansas-based brands such as Koch , Coleman , Cessna , Pizza Hut, Beechcraft , Freddy's , and more are based in Wichita. Wichita's principal industrial sector
2668-686: Is the principal city of both the Wichita Metropolitan Statistical Area (MSA) and the Wichita-Winfield Combined Statistical Area (CSA) . The Wichita MSA encompasses Sedgwick, Butler , Harvey , and Sumner counties and, as of 2010, had a population of 623,061, making it the 84th largest MSA in the United States. The larger Wichita-Winfield CSA also includes Cowley County and, as of 2013, had an estimated population of 673,598. Nearby Reno County
2760-404: Is typically for a CD-ROM drive. Note that a SCSI target device (which can be called a "physical unit") is sometimes divided into smaller "logical units". For example, a high-end disk subsystem may be a single SCSI device but contain dozens of individual disk drives, each of which is a logical unit. Further, a RAID array may be a single SCSI device, but may contain many logical units, each of which
2852-454: Is used on the cable and the female connector ("receptacle") on the device. Apart from the standardized use with the SCSI interface, several vendors have also used VHDCI connectors for other types of interfaces: This computer hardware article is a stub . You can help Misplaced Pages by expanding it . SCSI Small Computer System Interface ( SCSI , / ˈ s k ʌ z i / SKUZ -ee )
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2944-435: Is used which is also of serial nature. SCSI is popular on high-performance workstations, servers, and storage appliances. Almost all RAID subsystems on servers have used some kind of SCSI hard disk drives for decades (initially Parallel SCSI, interim Fibre Channel, recently SAS), though a number of manufacturers offer SATA -based RAID subsystems as a cheaper option. Moreover, SAS offers compatibility with SATA devices, creating
3036-545: The American Civil War , and established a settlement on the banks of the Little Arkansas. During this period, trader Jesse Chisholm established a trading post at the site, one of several along a trail extending south to Texas which became known as the Chisholm Trail . In 1867, after the war, the Wichita returned to Indian Territory. In 1868, trader James R. Mead was among a group of investors who established
3128-671: The Andover, Kansas tornado outbreak of April 1991, and during the Oklahoma tornado outbreak of May 1999. Winters are cold and dry; since Wichita is roughly midway between Canada and the Gulf of Mexico , cold spells and warm spells are equally frequent. Warm air masses from the Gulf of Mexico can raise midwinter temperatures into the 50s and even 60s (°F), while cold-air masses from the Arctic can occasionally plunge
3220-656: The Civil War in their homeland. Thousands of immigrants from Vietnam moved to Wichita in the aftermath of the Vietnam War . The 2020 United States census counted 397,532 people, 154,683 households, and 92,969 families in Wichita. The population density was 2,454.1 per square mile (947.5/km ). There were 172,801 housing units at an average density of 1,066.7 per square mile (411.9/km ). The U.S. census accounts for race by two methodologies. "Race alone" and "Race alone less Hispanics" where Hispanics are delineated separately as if
3312-514: The Garvey Center , and the Epic Center . Old Town is also part of downtown; this 50-acre (0.20 km ) area is home to a cluster of nightclubs, bars, restaurants, a movie theater, shops, and apartments and condominiums, many of which make use of historical warehouse-type spaces. Two notable residential areas of Wichita are Riverside and College Hill . Riverside is northwest of downtown, across
3404-511: The Great Plains , far from any large moderating influences such as mountains or large bodies of water, Wichita often experiences severe weather with thunderstorms occurring frequently during the spring and summer. These occasionally bring large hail and frequent lightning. Particularly destructive ones have struck the Wichita area several times in the course of its history - in September 1965, during
3496-718: The Macintosh Quadra 630 in 1994, and added it to its high-end desktops starting with the Power Macintosh G3 in 1997. Apple dropped on-board SCSI completely in favor of IDE and FireWire with the (Blue & White) Power Mac G3 in 1999, while still offering a PCI SCSI host adapter as an option on up to the Power Macintosh G4 (AGP Graphics) models. Sun switched its lower-end range to Parallel ATA (PATA) with introduction of their Ultra 5 and 10 low end workstations using CMD640 IDE controller and continued this trend with
3588-689: The Osage in the 1750s drove the Wichita further south. Prior to European settlement of the region, the site was in the territory of the Kiowa . Claimed first by France as part of Louisiana and later acquired by the United States with the Louisiana Purchase in 1803, it became part of Kansas Territory in 1854 and then the state of Kansas in 1861. The Wichita people returned in 1863, driven from their land in Indian Territory by Confederate forces in
3680-408: The 1920s and 1930s, businessmen and aeronautical engineers established aircraft manufacturing companies in Wichita, including Beechcraft , Cessna , and Stearman Aircraft . The city became an aircraft production hub known as "The Air Capital of the World". Textron Aviation , Learjet , Airbus , and Boeing / Spirit AeroSystems continue to operate design and manufacturing facilities in Wichita, and
3772-409: The 1920s. The careers and fortunes of future oil moguls Archibald Derby, who later founded Derby Oil , and Fred C. Koch , who established what would become Koch Industries , both began in Wichita during this period. The money generated by the oil boom enabled local entrepreneurs to invest in the nascent airplane-manufacturing industry. In 1917, Clyde Cessna built his Cessna Comet in Wichita,
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3864-538: The 1970s, Wichita has continued to grow steadily into the 21st century. In the late 1990s and 2000s, the city government and local organizations began collaborating to redevelop downtown Wichita and older neighborhoods in the city. Intrust Bank Arena opened downtown in 2010. Boeing ended its operations in Wichita in 2014. However, the city remains a national center of aircraft manufacturing with other companies including Spirit AeroSystems and Airbus maintaining facilities in Wichita. Wichita Mid-Continent Airport
3956-492: The 21st century, most becoming low-income neighborhoods. In terms of population, Wichita is the largest city in Kansas and the 49th largest city in the United States, according to the 2020 census . Wichita has an extensive history of attracting immigrants. Starting in 1895, a population of Lebanese Americans moved to the city, many of whom were Orthodox Christians . A second wave of Lebanese migrants moved to Wichita to flee
4048-821: The Amiga 3000/3000T systems and it was an add-on to previous Amiga 500/2000 models. Starting with the Amiga 600/1200/4000 systems Commodore switched to the IDE interface. Atari included SCSI as standard in its Atari MEGA STE , Atari TT and Atari Falcon computer models. SCSI has never been popular in the low-priced IBM PC world, owing to the lower cost and adequate performance of ATA hard disk standard. However, SCSI drives and even SCSI RAIDs became common in PC workstations for video or audio production. Recent physical versions of SCSI— Serial Attached SCSI (SAS), SCSI-over- Fibre Channel Protocol (FCP), and USB Attached SCSI (UAS)—break from
4140-583: The Arkansas River near the western edge of the Flint Hills in the Wellington-McPherson Lowlands region of the Great Plains . The area's topography is characterized by the broad alluvial plain of the Arkansas River valley and the moderately rolling slopes that rise to the higher lands on either side. The Arkansas follows a winding course, south-southeast through Wichita, roughly bisecting
4232-423: The Arkansas River, and surrounds the 120-acre (0.49 km ) Riverside Park. College Hill is east of downtown and south of Wichita State University. It is one of the more historic neighborhoods, along with Delano on the west side and Midtown in the north-central city. Four other historic neighborhoods—developed in southeast Wichita (particularly near Boeing , Cessna and Beech aircraft plants) -- are among
4324-507: The SCSI standards also include an extensive set of command definitions. The SCSI command architecture was originally defined for parallel SCSI buses but has been carried forward with minimal change for use with iSCSI and serial SCSI. Other technologies which use the SCSI command set include the ATA Packet Interface , USB Mass Storage class and FireWire SBP-2 . In SCSI terminology, communication takes place between an initiator and
4416-472: The age of 18; 42.6% were married couples living together; 29.4% had a female householder with no spouse present. 33.2% of households consisted of individuals and 11.9% had someone living alone who was 65 years of age or older. The average household size was 2.5 and the average family size was 3.2. 24.6% of the population was under the age of 18, 9.5% from 18 to 24, 26.7% from 25 to 44, 23.2% from 45 to 64, and 14.3% who were 65 years of age or older. The median age
4508-514: The airport to establish McConnell Air Force Base . By 1954, all nonmilitary air traffic had shifted to the new Wichita Mid-Continent Airport west of the city. In 1962, Lear Jet Corporation opened with its plant adjacent to the new airport. Throughout the late 19th and 20th centuries, several other prominent businesses and brands had their origins in Wichita. A. A. Hyde founded health-care products maker Mentholatum in Wichita in 1889. Sporting goods and camping-gear retailer Coleman started in
4600-421: The boom, however, the city entered an economic recession, and many of the original settlers went bankrupt. In 1914 and 1915, deposits of oil and natural gas were discovered in nearby Butler County . This triggered another economic boom in Wichita as producers established refineries, fueling stations, and headquarters in the city. By 1917, five operating refineries were in Wichita, with another seven built in
4692-498: The city in 1935. During World War II , the site hosted Wichita Army Airfield and Boeing Airplane Company Plant No. 1. The city experienced a population explosion during the war when it became a major manufacturing center for the Boeing B-29 bomber. The wartime city quickly grew from 110,000 to 184,000 residents, drawing aircraft workers from throughout the central U.S. In 1951, the U.S. Air Force announced plans to assume control of
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#17330848548764784-485: The city in the early 1900s. A number of fast-food franchises started in Wichita, beginning with White Castle in 1921 and followed by many more in the 1950s and 1960s including Pizza Hut in 1958. In the 1970s and 1980s, the city became a regional center of health care and medical research. Wichita has been a focal point of national political controversy multiple times in its history. In 1900, famous temperance extremist Carrie Nation struck in Wichita upon learning
4876-683: The city remains a major center of the American aircraft industry . Several airports located within the city of Wichita include McConnell Air Force Base , Colonel James Jabara Airport , and Wichita Dwight D. Eisenhower National Airport , the largest airport in Kansas. As an industrial hub, Wichita is a regional center of culture, media, and trade. It hosts several universities, large museums, theaters, parks, shopping centers, and entertainment venues, most notably Intrust Bank Arena and Century II Performing Arts & Convention Center . The city's Old Cowtown Museum maintains historical artifacts and exhibits
4968-416: The city was 49.3% male and 50.7% female. The median income for a household in the city was $ 44,477, and for a family was $ 57,088. Males had a median income of $ 42,783 versus $ 32,155 for females. The per capita income for the city was $ 24,517. About 12.1% of families and 15.8% of the population were below the poverty line , including 22.5% of those under age 18 and 9.9% of those age 65 or over. Wichita
5060-418: The city was 71.9% White , 11.5% African American , 4.8% Asian , 1.2% American Indian , 0.1% Pacific Islander , 6.2% from other races, and 4.3% from two or more races. Hispanics and Latinos of any race were 15.3% of the population. Of the 151,818 households, 33.4% had children under 18 living with them, 44.1% were married couples living together, 5.2% had a male householder with no wife present, 13.1% had
5152-412: The city was not enforcing Kansas's prohibition ordinance. The Dockum Drug Store sit-in took place in the city in 1958 with protesters pushing for desegregation . In 1991, thousands of anti-abortion protesters blockaded and held sit-ins at Wichita abortion clinics, particularly the clinic of George Tiller . Tiller was later murdered in Wichita by Scott Roeder in 2009. Except for a slow period in
5244-546: The city's early history. Wichita State University is the third-largest post-secondary institution in the state. Archaeological evidence indicates human habitation near the confluence of the Arkansas and Little Arkansas Rivers , the site of present-day Wichita, as early as 3000 BC. In 1541, a Spanish expedition led by explorer Francisco Vázquez de Coronado found the area populated by the Quivira, or Wichita, people . Conflict with
5336-468: The city's first streets. Wichita formally incorporated as a city on July 21, 1870. Wichita's position on the Chisholm Trail made it a destination for cattle drives traveling north from Texas to access railroads, which led to markets in eastern U.S. cities. The Atchison, Topeka and Santa Fe Railway reached the city in 1872. As a result, Wichita became a railhead for the cattle drives, earning it
5428-551: The city. According to the United States Census Bureau , the city has a total area of 163.59 sq mi (423.70 km ), of which 4.30 sq mi (11.14 km ) are covered by water. As the core of the Wichita metropolitan area , the city is surrounded by suburbs. Bordering Wichita on the north are, from west to east, Valley Center , Park City , Kechi , and Bel Aire . Enclosed within east-central Wichita
5520-528: The city. It is joined along its course by several tributaries, all of which flow generally south. The largest is the Little Arkansas River, which enters the city from the north and joins the Arkansas immediately west of downtown. Further east lies Chisholm Creek , which joins the Arkansas in the far southern part of the city. The Chisholm's own tributaries drain much of the city's eastern half; these include
5612-526: The controllers of the libraries (automation devices) in which they are installed. The ADI standard specifies the use of RS-422 for the physical connections. The second-generation ADT-2 standard defines iADT, use of the ADT protocol over IP (Internet Protocol) connections, such as over Ethernet . The Automation/Drive Interface − Commands standards (ADC, ADC-2, and ADC-3) define SCSI commands for these installations. In addition to many different hardware implementations,
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#17330848548765704-510: The creek's West, Middle, and East Forks, as well as further south, Gypsum Creek. The Gypsum is fed by its own tributary, Dry Creek. Two more of the Arkansas's tributaries lie west of its course; from east to west, these are Big Slough Creek and Cowskin Creek. Both run south through the western part of the city. Fourmile Creek, a tributary of the Walnut River , flows south through the far eastern part of
5796-452: The drive's chassis. SASI, which was used in mini- and early microcomputers, defined the interface as using a 50-pin flat ribbon connector which was adopted as the SCSI-1 connector. SASI is a fully compliant subset of SCSI-1 so that many, if not all, of the then-existing SASI controllers were SCSI-1 compatible. In around 1980, NCR Corporation had been developing a competing interface standard by
5888-423: The enclosure using a specialized set of SCSI commands to access power, cooling, and other non-data characteristics. Wichita, Kansas Wichita ( / ˈ w ɪ tʃ ɪ t ɔː / WITCH -ih-taw ) is the most populous city in the U.S. state of Kansas and the county seat of Sedgwick County . As of the 2020 census , the population of the city was 397,532. The Wichita metro area had
5980-534: The faster serial SCSI (SAS) host adapters. The "small" reference in "small computer system interface" is historical; since the mid-1990s, SCSI has been available on even the largest of computer systems. Since its standardization in 1986, SCSI has been commonly used in the Amiga , Atari , Apple Macintosh and Sun Microsystems computer lines and PC server systems. Apple started using the less-expensive parallel ATA (PATA, also known as IDE ) for its low-end machines with
6072-561: The first aircraft built in the city. In 1920, two local oilmen invited Chicago aircraft builder Emil "Matty" Laird to manufacture his designs in Wichita, leading to the formation of the Swallow Airplane Company . Two early Swallow employees, Lloyd Stearman and Walter Beech , went on to found two prominent Wichita-based companies, Stearman Aircraft in 1926 and Beechcraft in 1932, respectively. Cessna, meanwhile, started his own company in Wichita in 1927. The city became such
6164-429: The jumpers are typically located; the switch emulates the necessary jumpers. While there is no standard that makes this work, drive designers typically set up their jumper headers in a consistent format that matches the way that these switches implement. Setting the bootable (or first) hard disk to SCSI ID 0 is an accepted IT community recommendation. SCSI ID 2 is usually set aside for the floppy disk drive while SCSI ID 3
6256-471: The later Blade 100 and 150 entry level systems and did not switch to contemporary SATA interface even with the introduction of the Blade 1500 in 2003 while the higher end Blade 2500 released at the same time used Ultra320 Parallel SCSI-3. Sun moved to SATA and SAS interfaces with their last UltraSPARC-III based workstations in 2006 with the entry level Ultra 25 and mid-range Ultra 45. Commodore included SCSI on
6348-422: The local area. Since healthcare needs remain fairly consistent regardless of the economy, this field was not subject to the same pressures that affected other industries in the early 2000s. The Kansas Spine Hospital opened in 2004, as did a critical-care tower at Wesley Medical Center . In July 2010, Via Christi Health, which is the largest provider of healthcare services in Kansas, opened a hospital that will serve
6440-638: The most commonly used being: Each device on the SCSI bus is assigned a unique SCSI identification number or ID. Devices may encompass multiple logical units, which are addressed by logical unit number (LUN). Simple devices have just one LUN, more complex devices may have multiple LUNs. A "direct access" (i.e. disk type) storage device consists of a number of logical blocks, addressed by Logical Block Address ( LBA ). A typical LBA equates to 512 bytes of storage. The usage of LBAs has evolved over time and so four different command variants are provided for reading and writing data. The Read(6) and Write(6) commands contain
6532-508: The name of BYSE. In the summer of 1981, NCR abandoned their in-house efforts in favor of pursuing SASI and improving on its design for their own computer systems. Fearing that their extension of the SASI standard would induce market confusion, however, NCR briefly cancelled their contract with Shugart. NCR's proposed improvements to the design of SCSI piqued the interest of Optimem, a subsidiary of Shugart, who requested that NCR and Shugart collaborate on
6624-403: The nation's 100 largest cities—6th worst for people with allergies in 2016, 3rd worst in 2021, 2nd worst in 2022, and worst nationwide in 2023. Wichita has several recognized areas and neighborhoods. The downtown area is generally considered to be east of the Arkansas River, west of Washington Street, north of Kellogg, and south of 13th Street. It contains landmarks such as Century II ,
6716-445: The nation's few remaining examples of U.S. government-funded temporary World War II housing developments to support war factory personnel: Beechwood (now mostly demolished), Oaklawn, Hilltop (the city's highest-density large neighborhood), and massive Planeview (where over 30 languages are spoken) -- in all, home to about a fifth of the city's population at their peak. Though designed as temporary housing, all have remained occupied into
6808-522: The new acronym as "scuzzy" and that stuck. The NCR facility in Wichita, Kansas developed the industry's first SCSI controller chip, the NCR 5385, released in 1983. According to its developers, the chip worked the first time it was tested. A number of companies, such as Adaptec and Optimem, were early supporters of SCSI. By late 1990 at least 45 manufactures offered 251 models of parallel SCSI host adapters Today, such host adapters have largely been displaced by
6900-465: The nickname "Cowtown". Across the Arkansas River, the town of Delano became an entertainment destination for cattlemen thanks to its saloons, brothels, and lack of law enforcement. James Earp ran a brothel with his wife Nellie "Bessie" Ketchum. His brother Wyatt was likely a pimp, although historian Gary L. Roberts believes that he was an enforcer or bouncer. Local arrest records show that Earp's common-law wife Sally and James' wife Nellie managed
6992-456: The northwest area of Wichita. Via Christi Hospital on St. Teresa is the system's fifth hospital to serve the Wichita community. In 2016, Wesley Healthcare opened Wesley Children's Hospital, the first and only children's hospital in the Wichita area. Thanks to the early 20th-century oil boom in neighboring Butler County, Kansas , Wichita became a major oil town, with dozens of oil-exploration companies and support enterprises. Most famous of these
7084-414: The operator choose the SCSI ID of the host adapter. Alternatively, the host adapter may come with software that must be installed on the host computer to configure the SCSI ID. The traditional SCSI ID for a host adapter is 7, as that ID has the highest priority during bus arbitration (even on a 16 bit bus). The SCSI ID of a device in a drive enclosure that has a back plane is set either by jumpers or by
7176-470: The parallel cable, and an asynchronous mode. The asynchronous mode is a classic request/acknowledge protocol, which allows systems with a slow bus or simple systems to also use SCSI devices. Faster synchronous modes are used more frequently. Internal parallel SCSI cables are usually ribbons , with two or more 50–, 68–, or 80–pin connectors attached. External cables are typically shielded (but may not be), with 50– or 68–pin connectors at each end, depending upon
7268-515: The presence of "unknown" as one of these types means that in theory it can be used as an interface to almost any device, but the standard is highly pragmatic and addressed toward commercial requirements. The initial Parallel SCSI was most commonly used for hard disk drives and tape drives , but it can connect a wide range of other devices, including scanners and CD drives , although not all controllers can handle all devices. The ancestral SCSI standard, X3.131-1986, generally referred to as SCSI-1,
7360-589: The shift to serial interfaces is the clock skew issue of high-speed parallel interfaces, which makes the faster variants of parallel SCSI susceptible to problems caused by cabling and termination. The non-physical iSCSI preserves the basic SCSI paradigm , especially the command set, almost unchanged, through embedding of SCSI-3 over TCP/IP . Therefore, iSCSI uses logical connections instead of physical links and can run on top of any network supporting IP. The actual physical links are realized on lower network layers , independently from iSCSI. Predominantly, Ethernet
7452-409: The slot in the enclosure the device is installed into, depending on the model of the enclosure. In the latter case, each slot on the enclosure's back plane delivers control signals to the drive to select a unique SCSI ID. A SCSI enclosure without a back plane often has a switch for each drive to choose the drive's SCSI ID. The enclosure is packaged with connectors that must be plugged into the drive where
7544-785: The specific SCSI bus width supported. The 80–pin Single Connector Attachment (SCA) is typically used for hot-pluggable devices Fibre Channel can be used to transport SCSI information units, as defined by the Fibre Channel Protocol for SCSI (FCP). These connections are hot-pluggable and are usually implemented with optical fiber. Serial attached SCSI (SAS) uses a modified Serial ATA data and power cable. iSCSI (Internet Small Computer System Interface) usually uses Ethernet connectors and cables as its physical transport, but can run over any physical transport capable of transporting IP . The SCSI RDMA Protocol (SRP)
7636-518: The target returns a Check Condition in response to a command, the initiator usually then issues a SCSI Request Sense command in order to obtain a key code qualifier ( KCQ ) from the target. The Check Condition and Request Sense sequence involves a special SCSI protocol called a Contingent Allegiance Condition. There are four categories of SCSI commands: N (non-data), W (writing data from initiator to target), R (reading data), and B (bidirectional). There are about 60 different SCSI commands in total, with
7728-600: The temperature below 0 °F. Wind speed in the city averages 13 mph (21 km/h). On average, January is the coldest month (and the driest), July the hottest, and May the wettest. The average temperature in the city is 57.7 °F (14.3 °C). Over the course of a year, the monthly daily average temperature ranges from 33.2 °F (0.7 °C) in January to 81.5 °F (27.5 °C) in July. The high temperature reaches or exceeds 90 °F (32 °C) an average of 65 days
7820-456: The traditional parallel SCSI bus and perform data transfer via serial communications using point-to-point links. Although much of the SCSI documentation talks about the parallel interface, all modern development efforts use serial interfaces. Serial interfaces have a number of advantages over parallel SCSI, including higher data rates, simplified cabling, longer reach, improved fault isolation and full-duplex capability. The primary reason for
7912-898: The unlimited scope of the (IP) network, the process is quite complicated. These discovery processes occur at power-on/initialization time and also if the bus topology changes later, for example if an extra device is added. SCSI has the CTL (Channel, Target or Physical Unit Number, Logical Unit Number) identification mechanism per host bus adapter , or the HCTL (HBA, Channel, PUN, LUN) identification mechanism, one host adapter may have more than one channels. While all SCSI controllers can work with read/write storage devices, i.e. disk and tape, some will not work with some other device types; older controllers are likely to be more limited, sometimes by their driver software, and more Device Types were added as SCSI evolved. Even CD-ROMs are not handled by all controllers. Device Type
8004-494: Was $ 31,875 (+/- $ 408). Approximately, 10.9% of families and 15.5% of the population were below the poverty line , including 21.4% of those under the age of 18 and 8.7% of those ages 65 or over. As of the census of 2010 , 382,368 people, 151,818 households, and 94,862 families were residing in the city. The population density was 2,304.8 inhabitants per square mile (889.9/km ). The 167,310 housing units had an average density of 1,022.1 per square mile (394.6/km ). The racial makeup of
8096-471: Was 35.3 years. For every 100 females, the population had 97.5 males. For every 100 females ages 18 and older, there were 95.7 males. The 2016-2020 5-year American Community Survey estimates show that the median household income was $ 53,466 (with a margin of error of +/- $ 1,028) and the median family income $ 69,930 (+/- $ 1,450). Males had a median income of $ 38,758 (+/- $ 1,242) versus $ 26,470 (+/- $ 608) for females. The median income for those above 16 years old
8188-400: Was 58.79% (233,703) White (non-Hispanic) , 10.62% (42,228) Black (non-Hispanic) , 0.86% (3,400) Native American (non-Hispanic) , 5.03% (19,991) Asian (non-Hispanic) , 0.11% (429) Pacific Islander (non-Hispanic) , 0.40% (1,585) from other race (non-Hispanic) , 5.89% (23,410) from two or more races, and 18.31% (72,786) Hispanic or Latino. Of the 154,683 households, 26.6% had children under
8280-546: Was discontinued. Initially, the SCSI Parallel Interface (SPI) was the only interface using the SCSI protocol. Its standardization started as a single-ended 8-bit bus in 1986, transferring up to 5 MB/s, and evolved into a low-voltage differential 16-bit bus capable of up to 320 MB/s. The last SPI-5 standard from 2003 also defined a 640 MB/s speed which failed to be realized. Parallel SCSI specifications include several synchronous transfer modes for
8372-561: Was officially renamed Wichita Dwight D. Eisenhower National Airport after the Kansas native and U.S. President in 2015. Wichita is in south-central Kansas at the junction of Interstate 35 and U.S. Route 54 . Part of the Midwestern United States , it is 157 mi (253 km) north of Oklahoma City , 181 mi (291 km) southwest of Kansas City , and 439 mi (707 km) east-southeast of Denver . The city lies on
8464-769: Was published by the X3T9 technical committee of the American National Standards Institute (ANSI) in 1986. SCSI-2 was published in August 1990 as X3.T9.2/86-109, with further revisions in 1994 and subsequent adoption of a multitude of interfaces. Further refinements have resulted in improvements in performance and support for ever-increasing data storage capacity. SCSI is derived from the Shugart Associates System Interface (SASI), developed beginning 1979 and publicly disclosed in 1981. Larry Boucher
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