Data Storage Devices

Tape remains a viable alternative to disk in some situations due to its lower cost per bit. This is a large advantage when dealing with large amounts of data. Though the areal density of tape is lower than for disk drives, the available surface area on a tape is far greater. The highest capacity tape media are generally on the same order as the largest available disk drives (about 5 TB in 2011). Tape has historically offered enough advantage in cost over disk storage to make it a viable product, particularly for backup, where media removability is necessary.

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in general, a HDD or a tape casette. HDD tend to be used for normal computers and for servers, tape casettes tend to be used for the backup of servers (they're the things that you see spinning on computers in old fashioned movies

The brain.

Assuming that you have the three most common ones, they would be: Floppy Disk Drive (Usually A: drive) Hard Drive (Usually C: drive) CD-Rom Drive (varies by manufacturer) However, it could be any number of other drives, depending on your computer.

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A DVD holds around six times as much as a CD. Also, some USB drives and almost all hard drives hold WAY more than a CD.

Theres a number of different speeds

Older drives spin at 5400RPM
The average drive spins at 7200RPM
Newer, 1TB SATA drives spin at 10,000RPM
Hight performance drives (File Servers, Web Hosting ec) spin at 15,000RPM

CD & DVD work in practically the same manner. Both store data as a series of reflective marks on the surface of the disc. The thin plastic or metal foil layer of the disc gets hit by the laser beam of the writing drive. The laser energy thus produced creates tiny bumps in a spiral pattern similar to that of a long-playing album.

A few years ago, before there were CDs and USB flashdrives, data to be stored on removable media was stored on "floppies" the most recent of these was square three and a half inches on an edge (hence the 3.5 name) about one tenth of an inch thick stiff plastic case surrounding a flimsy (hence the name "floppy") magnetically covered mylar disc. These were most commonly formatted to hold 1.44Mb (there are a huge number of formats, sizes etc. for removable media look it up on Wikipedia)

Formerly they had, but nowadays when compared to pendrives they have a small storage capacity, do not surpassing 700 MB. The tendency of storing devices is directed to pendrives due to their inumerous advantages.

RAM

To removed write protected mode from your usb pen drive you must first reboot your device when your device comes back on press f8 frantically. This will prompt your device to advance settings, let your files load and than rename your pen drive and hit enter after that hit enter again when asked about the formatting of your new drive, press yes when the prompt appears, allow your system to reboot, this may take some time but after rebooting your pen drive will be removed.

There really isn't a standard size. It's all a matter of opinion and depends on what you will be using the computer for. Generally, they range between 100 GB and 500 GB, but can exceed into the 10 TB range (TB stands for terabyte).

Yes, a DVD burner or a DVD burning software is needed to create a DVD. for example, you have a movie or you download some video files( YouTube video and so on), and you want to watch them on DVD player, so you need to convert and burn them to DVD.

For you to write to a disk, the write-protect notch must be closed.

Solid state backing storage, or backup storage, is a way of storing information that has no moving parts. The small, plug-in modules often called USB drives or thumb drives are a common example of this type of storage.

I'm not an engineer, but while lasers are used to read both CD's and DVD's, the required laser is different. I suppose it is due to the frequency that the laser is reading. Anyway, DVD's are about 3 times tighter packed than CD's, so the CD's laser can't focus in on the data. This is why if you tried to store a movie on CD (using the CD-i format, for example), you would end up with 3 or 4 CD's compared to one DVD.

Typically random access memory (RAM) is the primary storage device and the slower rotating magnetic media (disc drive) is the secondary storage device. Other devices like USB thumb drives and other removable media are considered tertiary (3rd level) storage devices

RAM - standing for Random Access Memory. The contents of RAM are lost when the computer is turned off.

Memory is a loose term when it comes to computers. Memory can mean one of two things that are both primary and absolutely necessary to run a computer. One is RAM, which is the smaller memory that helps with computer performance. Without it, the computer will not start up at all because the RAM is used for essential backround tasks. The other memory is HDD memory (hard drives). This memory is used to store information that does not need to be accessed instantaneously. HDD memory is used to store the operating system of a computer, as well as other information such as programs and documents. There is no "primary" memory, in a computer, as it can mean two different things that are both invaluable.

One can store their computer data online via cloud storage services. There are a number of cloud companies one can use including 'Amazon Cloud Drive', 'Apple iCloud', 'Google Drive' and 'Microsoft SkyDrive'.

1 bit = a 1 or 0 (b)

4 bits = 1 nybble (?)

8 bits = 1 byte (B)

1024 bytes = 1 Kilobyte (KB)

1024 Kilobytes = 1 Megabyte (MB)

1024 Megabytes = 1 Gigabyte (GB)

1024 Gigabytes = 1 Terabyte (TB)

Yes. In fact, it can only access data sequentially. Because tape is very inexpensive and will hold data fairly well for a long time, it's still in use even today, but memory access in sequence, not random, is much much slower. It's like having one-hundred 3x5 cards that you have information written on. Sequential memory is like having the hundred cards all stacked together and you can only access them by flipping through one at a time in order until you get to the card you want. Random memory is like having all the cards spread out on a big table so you can just go straight to the ones you want.