eSATA is an example of an extension to current serial ATA standards. The main function of eSATA is to make it possible for SATA drives to be attached externally, creating a wider network of functionality by combining the power of each of the drives. Relatively new, eSATA means that it is possible to engage in data transfer and processing much more quickly than with traditional methods of connectivity.
How Does eSATA Work?
The basic idea behind eSATA is make it possible to connect multiple drives without having to employ cables or wired connections of some sort. Traditional methods of connecting the external hard drives relied upon the use of such devices as FireWire or USB cables. eSATA does away with all that and makes it possible to connected several external drives in a very short period of time, without all the work of figuring out which cable will do the job. ESATA is based on established standards and will work every time.
What Are Some of the Advantages of eSATA?
One of the immediate advantages of using eSATA is that the eSATA cables are usually longer and easier to distinguish from the jumble of wiring that is used to connect various devices. Anyone who operates even a home system knows how easy it is for wires and cables to become snared as they run across one another and make it virtually impossible to tell what runs where. eSATA cables are generally at least six feet long and tend to be somewhat different in appearance than USB cables and FireWire. One glance at the cable and you know what it is and where it goes.
Another advantage is the ease of connecting and disconnecting the external drive. ESATA drives are designed with what are known as hot plugs. This means the cables can be connected and disconnected with ease, and without the need to power down the system in order to add or remove a drive.
Along with the esthetics, eSATA also helps to provide excellent rates of data transfer that are sometimes better than can be achieved with a USB connection. There are currently versions of eSATA on the market that will provide data transfer speeds of between 150MBps to 300 MBps. That is a great deal of power when it comes to using an external drive, and is generally much better than can be achieved using a USB cable.
Espresso is a coffee beverage prepared by extracting flavor from the coffee beans. Very hot water (but not boiling) is forced at high pressure through the finely ground coffee which is packed tightly. The resulting brew is just like coffee but is different from it. Espresso is a suspended solution of coffee particles with rich creamy foam on the top. This creamy foam is called crema.
The espresso drink was developed in Italy. Espresso in Italian language means a lot of pressure. There are many factors to be considered while preparing espresso such as the temperature of water, the pressure with which it is forced, the grind size of the coffee and how tightly the coffee is packed. Preparing espresso is considered to be an art. The makers are called barista.
While preparing, if the water is too hot, the espresso will become bitter. Too cold water can change the taste to sour. When hot water is passed through the coffee, the oils, sugars and proteins in the coffee are extracted and dissolved in the water. The espresso thus got is a highly concentrated solution of all these dissolved solids. When a shot of espresso is pulled from the machine, the resulting drink has a rich layer of creamy foam, called crema, which is effervescent in nature. The drink itself is highly volatile, meaning; the flavor is lost in no time when the drink comes in contact with the air. Some times it is served in pre heated cups to maintain the effervescent cream and the concentration of the drink to savor. It is drunk as soon as it is prepared.
Quality of espresso depends on four factors as given below.
- The blend Espresso is at its best if a number of coffee beans with different flavors are used. The extract can be very stimulating. - The machine The factors such as heat and pressure are critical to maintain the quality of espresso. If right pressure is not applied, the coffee may not be extracted fully. Over heating may give burnt taste to the drink. The selection of machine is important. - The Grind Size The right grind size of the coffee is usually given to be that of powdered sugar. The coffee has to be extracted to its fullest. - The packing of coffee A loosely packed coffee may come with the water at high pressure making it a coffee rather than an espresso.
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