SCSI Adapter

SCSI is the second most used interface in computers today. Small Computer System Interface, SCSI or (scuzzy), as it is sometimes called, is based on an older proprietary interface. SCSI was developed by Shugart Associates along with the NCR Corporation in the 1980′s. It is a controller used to power SCSI- enabled devices, as well as send and receive data to and from SCSI- enabled devices like hard drives and printers. SCSI is a parallel interface, which means that instead of sending information one byte at a time it sends several bytes at once. This makes it possible to increase the speed of devices. SCSI adapters are either for internal or external devices that change a cable connector from one type to another. This allows you to use devices and cables that have different connectors. For external connections the cables are usually male and the device you will be connecting to is typically female. This makes external SCSI cables easier to use. When you are connecting internal devices you will find that standard 50 pin SCSI cables have female connectors, where 50 pin devices will have male connectors. The standard 68 pin cables will be the opposite. It will have male connectors while 68 pin drives will have female connectors. You have to make sure you get the right SCSI adapter for your SCSI drives and peripherals for it to work correctly and obtain the maximum speed.

When a SCSI adapter is used you can increase the number of hard drives in your computer. It is possible to configure up to four SCSI adapters on one computer. With each SCSI adapter being able to support up to seven hard drives. If your hard drives have up to 2 terabytes each, then this will allow up to 56 terabytes of storage per computer.

There are probably at least a hundred different kinds of SCSI adapters on the market. Some of the most frequently used SCSI adapters are the mechanical connector adapter, the wide/narrow adapter, the external/internal and the signaling adapter. The mechanical connector adapter allows you to connect different types of devices, even though they may not have the same type of connecters on the same cable. The wide /narrow adapter allows you to connect a wide cable onto a narrow SCSI device and the other way around. This method is not the simplest one to do, so make sure you know how to do this to avoid any problems. The external /internal adapter allows you to use an internal cable on the outside of the computer. The signaling adapter allows to you use differential drives on one SCSI single-ended chain. These adapters are electrically active and can be quiet expensive. With the interface adapters you can use SCSI devices on other types of interfaces. One of the most frequently used is SCSI drives on a computer’s parallel port. This type of adapter connection may prevent you from obtaining the maximum speed however.

When it comes to using adapters it is important to remember you may be dealing with some reliability issues. Even though you may be able to connect two separate devices together does not mean they will function properly in the configuration. Another thing to consider is the cost of these adapters since they can be quiet expensive. Though you may be able to adapt one type of device to another, with the cost aspect alone it may not be in your best interest to go that route. If you are unsure if an adapter is the best solution you should consult a hardware vendor that is qualified in this area.

This SCSI Adapter Review is Written/Updated on Mar 17th, 2010 and filed under Computer Hardware. Both comments and pings are currently closed.

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