Reading Quick Response Code In None
Using Barcode Control SDK for Software Control to generate, create, read, scan barcode image in Software applications.
QR Code Generation In None
Using Barcode maker for Software Control to generate, create Quick Response Code image in Software applications.
Read Denso QR Bar Code In None
Using Barcode scanner for Software Control to read, scan read, scan image in Software applications.
Making QR Code ISO/IEC18004 In C#
Using Barcode generator for .NET framework Control to generate, create Quick Response Code image in .NET framework applications.
9: Hard Drive Technologies
Paint Denso QR Bar Code In Visual Studio .NET
Using Barcode generator for ASP.NET Control to generate, create QR image in ASP.NET applications.
Generate QR Code JIS X 0510 In .NET Framework
Using Barcode maker for .NET Control to generate, create QR Code ISO/IEC18004 image in .NET framework applications.
Making QR In VB.NET
Using Barcode creation for VS .NET Control to generate, create Denso QR Bar Code image in .NET applications.
UCC.EAN - 128 Encoder In None
Using Barcode maker for Software Control to generate, create GTIN - 128 image in Software applications.
External SATA (eSATA) extends the SATA bus to external devices, as the name would imply The eSATA drives use similar connectors to internal SATA, but they re keyed differently so you can t mistake one for the other Figure 927 shows eSATA connectors on the back of a motherboard eSATA uses shielded cable lengths up to 2 meters outside the PC and is hot pluggable The beauty of eSATA is that it extends the SATA bus at full speed, so you re not limited to the meager 50 or 60 MBps of FireWire or USB
Generate European Article Number 13 In None
Using Barcode printer for Software Control to generate, create European Article Number 13 image in Software applications.
Encoding ECC200 In None
Using Barcode generator for Software Control to generate, create Data Matrix image in Software applications.
Barcode Creator In None
Using Barcode maker for Software Control to generate, create bar code image in Software applications.
Generate UPCA In None
Using Barcode creator for Software Control to generate, create UCC - 12 image in Software applications.
eSATA connectors (center; that s a FireWire port on the left)
Encoding EAN 8 In None
Using Barcode printer for Software Control to generate, create UPC - 8 image in Software applications.
Create UCC.EAN - 128 In .NET
Using Barcode drawer for ASP.NET Control to generate, create USS-128 image in ASP.NET applications.
SCSI: Still Around
Data Matrix ECC200 Drawer In Java
Using Barcode drawer for BIRT reports Control to generate, create DataMatrix image in BIRT reports applications.
Universal Product Code Version A Creator In None
Using Barcode generator for Font Control to generate, create UPC A image in Font applications.
The CompTIA A+ 220-604 exam tests you on SCSI and RAID, topics essential to server environments
Data Matrix ECC200 Maker In Java
Using Barcode drawer for Android Control to generate, create Data Matrix 2d barcode image in Android applications.
Painting Bar Code In None
Using Barcode creation for Online Control to generate, create bar code image in Online applications.
Many specialized server machines and enthusiasts systems use the small computer system interface (SCSI) technologies for various pieces of core hardware and peripherals, from hard drives to printers to high-end tape backup machines SCSI is different from ATA in that SCSI devices connect together in a string of devices called a chain Each device in the chain gets a SCSI ID to distinguish it from other devices on the chain Last, the ends of a SCSI chain must be terminated Let s dive into SCSI now, and see how SCSI chains, SCSI IDs, and termination all work SCSI is an old technology dating from the late 1970s, but it has been continually updated SCSI is faster than ATA (though the gap is closing fast), and until SATA arrived SCSI was the only good choice for anyone using RAID (see the RAID section a little later) SCSI is arguably fading away, but it still deserves some mention
Encoding Matrix 2D Barcode In VB.NET
Using Barcode drawer for .NET Control to generate, create 2D Barcode image in Visual Studio .NET applications.
Drawing Code 128 Code Set A In None
Using Barcode encoder for Office Word Control to generate, create Code 128 image in Microsoft Word applications.
SCSI manifests itself through a SCSI chain , a series of SCSI devices working together through a host adapter The host adapter provides the interface between the SCSI chain and the PC Figure 928 shows a typical PCI host adapter Many techs refer to the host adapter as the SCSI controller, so you should be comfortable with both terms
SCSI host adapter
Mike Meyers A+ Guide to Managing and Troubleshooting PCs
All SCSI devices can be divided into two groups: internal and external Internal SCSI devices are attached inside the PC and connect to the host adapter through the latter s internal connector Figure 929 shows an internal SCSI device, in this case a CD-ROM drive External devices hook to the external connector of the host adapter Figure 930 is an example of an external SCSI device Internal SCSI devices connect to the host adapter with a 68-pin ribbon cable (Figure 931) This flat, flexible cable functions precisely like a PATA cable Many external devices connect to the host adapter with a 50-pin high density (HD) connector Figure 932 shows a host adapter external port Higher end SCSI devices use a 68-pin high density (HD) connector Figure 929 Internal SCSI CD-ROM Multiple internal devices can be connected together simply by using a cable with enough connectors Figure 933, for example, shows a cable that can take up to four SCSI devices, including the host adapter Assuming the SCSI host adapter has a standard external port (some controllers don t have external connections at all), plugging in an external SCSI device is as simple as running a cable from device to controller The external SCSI connectors are D-shaped, so you can t plug them in backward As an added bonus, some external SCSI devices have two ports, one to connect to the host adapter and a second to connect to another SCSI device The process of connecting a device directly to another device is called daisy-chaining
Back of external SCSI device
Typical 68-pin ribbon cable
9: Hard Drive Technologies
You can daisy-chain up to 15 devices to one host adapter SCSI chains can be internal, external, or both (see Figure 934)
If you re going to connect a number of devices on the same SCSI chain, you must provide some way for the host adapter to tell one device from another To differentiate devices, SCSI uses a unique identifier called the SCSI ID The SCSI ID number can range from 0 to 15 SCSI IDs are similar to many other Figure 932 50-pin HD port on SCSI host adapter PC hardware settings in that a SCSI device can theoretically have any SCSI ID, as long as that ID is not already taken by another device connected to the same host adapter Some conventions should be followed when setting SCSI IDs Typically, Old SCSI equipment allowed most people set the host adapter to 7 or 15, but you can change this setting SCSI IDs from 0 to 7 only Note that there is no order for the use of SCSI IDs It does not matter which device gets which number, and you can skip numbers Restrictions on IDs apply only within a single chain Two devices can have the same ID, in other words, as long as they are on different chains (Figure 935) Every SCSI device has some method of setting its SCSI ID The trick is to figure out how as you re holding the device in your hand A SCSI device may use jumpers, dip switches, or even tiny dials; every new SCSI device is a new adventure as you try to determine how to set its SCSI ID