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Data Storage Devices
Data storage devices are any piece of computer hardware used to record some sort of information. Questions about storage devices and the media on which they record information belong here.
1,624 Questions
Why would you use magnetic tape storage?
this is a backup method typically used in server/client enviroments. at the peak of usage, it was far more expensive to buy a new hard drive for backup purposes, and would take multiple floppy disks to backup a network (Not to mention a ton of time) Magnetic tape storage offers relatively quick back up speed.
What is the Computers main storage device?
A computer's main internal long term storage is its hard disk or solid state drive(SSD). The computer's main short term memory is its RAM. There is often confusion between these two things. Memory, when talking about computers refers to RAM, while Hard Drive refers to the hard disk/SSD.
Which forms of storage are referred to as optical media?
An optical storage medium such as a CD or DVD can store audio and video files, respectively. DVD's are also capable of storing images and other data.
How long do stores keep surveliance videos?
After extensive research on this, I'd have to say at least 30-60 days, but especially with the latest DVR systems, some companies may keep up to 2 years of footage easily.
What are the Characteristics of the secondary storage devices?
Features of secondary storage devices include the ability to quickly store information, mirror primary storage, and to be used in the event of catastrophic failure. USB flash drives are commonly used for secondary storage.
How much storage does a CD-rom have?
A CD-RM used to be able to store up to 650MB of information. CD-ROMs are now able to store up to 700 MB of data or 80mins. of Audio. and hold music like mac lethal and AC/DC
Which storage device use magnetic film or aluminum platters for storing data?
Hard Disk Drive, Floppy Drive
Why is a DVD storage device important?
The DVD is the next generation CD. The DVD store more data, audo, or video than the CD.
A DVD-ROM drive can be used to view DVD Movies, install large applications, and to access a large amount of files.
Some DVD-ROM drives are capable of writing to DVD, enabling users store and backup anything they so chose to. Some users burn DVDs with videos to be viewed by others.
What is the difference between USB and a floppy disk drive?
USB is a standardized bus for connecting exernal peripherals (printers, scanners, keyboards, mice, flash drives, hard drives, etc...) to a computer. A floppy disk drive is an outdated method of storing data. It uses a thin sheet of coated plastic, usually inside a firmer plastic shell, to store data.
32000 kB=
262,144,000 bits
32,768,000 bytes
32,000 kilobytes
31.25 megabytes
0.0305175781 gigabytes
0.0000298023 terabytes
0.0000000291 petabytes
1 Mb (megabit) is 128kB (kilobytes), so just divide 32000 by 128 = 250.
Do people use floppy disks today?
I still use floppy disks for backing up some small files, like Word Documents, Text Files, and small "WAV file sound effects when I don't have any CDs or my flash drive is full.
I still have some old DOS games on floppy that I still play sometimes, though I have them backed up on CD, but I still play the games on Floppy if I can't find the CD.
I also maintain an Emergency Boot Disk, in case my computer crashes or gets hit by a virus and I need to go into DOS to resurrect the computer.
My School has older computers in the Social Studies computer lab that has computers with floppy disks, but I've never used them, I have a Pen drive for that! But I've seen the School IT guy use them to keep these old machines going.
My current Workplace has a few older printing presses that need to be "calibrated" using 4 unmarked floppy disks, in order, or the margins will be off and that docked from your pay. Luckily they copies of copies of copies of the original disks and they are different colors, so they always go Yellow-Blue-Black-Grey, Yellow-Blue-Black-Grey, etc.
The U.S. Government has a protocol that sensitive, classified military documents, such as Nuclear Defense Information, that was written in the 1980s, when floppy disks were the only way to distribute computer information. It would cost so much to transfer all the information to a more modern format, dispose of the old disks and write new protocol that they continue to use floppy disks to distribute this information in 2010 as they did in the 1980s.
There are a lot of older technology still in daily use that requires the use of floppy disks, like industrial equipment and cash registers. I went shopping early at a thrift store (shortly after they opened) once and I had to wait for them to boot the register from 3 floppy disks to buy some clothes, this was in 2008, too!
I remember saving some songs I had composed on an electric keyboard using a integrated floppy disk and could play them as "MIDI" files either on the keyboard or on my computer! But that was back in 2003.
Older digital cameras store their pictures on a floppy disk, also. Most of those cameras are of better quality than the modern, cheap flash-based digital cameras, film-like without the film. Though many of these have been abandoned in favor of new, flsh-based cameras.
Many Developing and Third-World countries use older, obsolete computers that have no other way to transfer and store data than floppy drives, after the developed world deemed them to be "obsolete" and were considered "junk" their still serving Latin America, Africa, Asia and the Islands as daily work-horses in homes, schools, hospitals, businesses and government offices.
As you can see floppy disks are still used, just usually as a legacy system, once all these technologies clunk out, they will be obsolete.
What is the purpose of optical disk drive?
A device for reading discs on which data is stored. They use a light laser which detects bumps and dips on the surface of a disc. these bumps and dips make up binary code which is interpreted by a computer of some sort. Optical drives include CD / DVD / Blu-Ray Disc readers or writers, as well as the already obselete HD DVD players
Explain all parts of floppy drive?
efgsysu7nvkjhdekjauynw7whbdnjcnshjcudhhuh7 hbudybegwevb\hvhnuhbreh7hfuhf78ryhgrbufhgr7
nufhebnhvfbnw8hf077321675342318264162461624612444
6123461824127317428342637446347538754385389454378953
6442387mnmnvcn723477yijfhu hjskaljfduabrgufdjguvdfhgrghibdrbbgjfhrbfurhgurhfgurbfruv
nufvhmmcndefidfidfujkkkoasaosmkvifngubhrng
ndvijgfvbuhrfjbujfvudfchfhuhrfhreufhr7gv,,kmnjkncuedbvufybgfrhvbuf7hvbreuvbg
What are the similarities ROM and Hard-drives?
they are both storage devices. both have data that can be read and used during the operating of the computer.
What must happen before any data can be read or written on a hard disk?
the right place on the hard disk has to be found, then the read/write head must be placed there, then the sector (a small part of the hard disk) is read or written, if it's read, the data is moved into the memory, maybe by the DMA (Direct Memory Access) Controller. Is it's a write operation, the data must first be given to the Hard Disc Controller.
When will the internet run out of space?
The current specification for IP addresses: (255.255.255.255)
IPv4 uses 32-bit (four-byte) addresses, which limits the address space to 4294967296 (232) possible unique addresses
The new specification for IP addresses: (3ffe:1900:4545:3:200:f8ff:fe21:67cf)
IPv6 has a vastly larger address space than IPv4. This results from the use of a 128-bit address, whereas IPv4 uses only 32 bits. The new address space thus supports 2128 (about 3.4×1038) addresses.
So the internet will run out of space when our current specification limit is reached (pending switch to the new spec)
What is the Purposes of storage devices?
To back up data, transfer media, install applacations, store files with out storge devices your coumputer is useless
What is the need for safe storage and efficient retrieval of information?
Information retrieval is the activity of obtaining information resources relevant to an information need from a collection of information resources. Searches can be based on metadata or on full-text indexing.
Automated information retrieval systems are used to reduce what has been called "information overload". Many universities and public libraries use IR systems to provide access to books, journals and other documents. Web search engines are the most visible IR applications.
