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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
What are Disadvantages of primary storage device?
While there are many advantages to electronic storage devices, there also some disadvantages. The disadvantages include their ability to get a virus, and the technical issues that they can often experience. These issues can be difficult for many users to fix.
What is the access method of magnetic tape?
It's sequential (or serial) access. The records are written one after the other (as if in a line or queue) and in order to find one the tape must be fast-forwarded or rewound as appropriate until the beginning of the record is found.
Why do we need backing storage?
As the name implies: BACKUP Data to protect against Data Loss. Data Loss can be in several forms and caused by several things:
1) Virus and their ilk
2) Hardware failure (it's not uncommon for Hard Drives to fail)
3) Accidental/Intentional Data Destruction (An accidental click of the 'Delete' button...inexperienced user on a common computer (children or relatives), Disgruntled family member/employee, Software/hardware caused system crash.
4) Theft/Vandalism
5) Fire/Flood/Act of God
6) This is a long-shot, but let's just mention a loss of the Computer Administrator which causes inaccessibility to computer data (Master Computer has complicated PW and Person in charge of that PW/Data dies). Hey, unlikely, but possible.
Methods of Backup:
1) OS-based Backup Software (typically backs-up to the Primary Hard Drive)
2) Hardware-Based Backup
a) RAID or similar (prevents from single or multiple disk failures
b) Network Backup device (saves data to a location (either HD or otherwise) which is not located on the same computer as the data itself)
3) Burn-to-Disc method (perform regular scheduled backups to a CD or DVD and then store this disc(s) in a safe location (fireproof safe if available)).
4) Online Data Backup (Paid Service such as Cryptonite, Cloud-based storage, ISP provided storage, web-based FTP or similar, etc). This is Storage Space either Free or otherwise which is located on Servers which can be accessed via the Web/Internet/VPN/etc...they are NOT located at the same location as the Data/Computer itself.
Each of these options have their strong points and weak-points and each individual much choose the level of protection that they deem necessary as well as staying within whatever budget they have available for such an endeuvour, and all while understanding their own level of computer/technical expertise. Some of these options can be very technical and/or time consuming (usually only at the initial setup).
Many may wish for simple, free, easy Data Backup...For you, I'd recommend OS-Based.
Others may wish for simple & cheap: OS or Software-based Burn-to-Disc.
Others still may want Real-time (or close to it) and aren't so concerned with ease or cost...for you, I'd recommend HW-based options (RAID or Dedicated Backup Drives)
Some may want mobile access to their data and are less concerned about the sensitivity of their data in which case I'd recommend Online-based storage.
Why do we need secondary storage devices?
As a backup for saving files. You may lose data if it is not saved to secondary storage. When you turn off your computer, any unsaved data is lost. That is why you need to save it to something like a USB key.
Pettabyte exabyte yottabyte petabyte terabyte bit byte kilobyte megabyte gigabyte please order?
bit
byte
kilobyte (kB) = 1,024 bytes
megabyte (MB) = 1,024 kB
gigabyte (GB) = 1,024 MB
terabyte (TB) = 1,024 GB
petabyte (not pettabyte) (PB) = 1,024 TB
exabyte (EB or XB) = 1,024 PB
zettabyte (ZB) = 1,024 XB
yottabyte (YB) = 1,024 ZB
I find the mis-ordering of XB YB and ZB disconcerting, but I wasn't consulted when they were established a few years ago. If you were counting, a yottabyte is about 1.2E24 bytes. That is almost exactly twice Avogadro's Number (6.024E23), which is the number of atoms in one mole of a substance. A mole of carbon weighs 12 grams. The current world data store (Feb 2011) of data held electronically is about 0.8 ZB.
How do you run a DVD in CD-RW?
Depending on the model and features of the DVD player, some can play CD-RW and other formats. The printed materials supplied with the DVD player will state what formats the player can read/play.
What are the functions of primary storage?
As we know, ROM i.e. read only memory can't be altered and comes in in-built form with the computer system. The user can't make any changes. To overcome this problem PROM came into existence. PROM i.e. programmable read only memory allows the user to program their own. Once the chip is prepared again user can't edit it. But also now the technology have been so developed that now we can erase our data and it gave two type of PROM i.e. EEPROM and UVPROM which are erased through high electric pluse and with the help of UV rays respectively. Remember, there is still not the concept of editing the data.
What is data organisation and formatin of magnetic disk?
- Disk recording mediums
- Disk recording methods
- Disk drive transports
- Disk drive electronics
- Disk recording specifications
I assume that when you say "TB" you're implying Terrabites. So here we go:
- 1 bit = smallest denomination
- 4 bits = 1 nibble
- 8 bits = 1 byte
- 1024 bytes = 1 kilobyte
- 1024 kilobytes = 1 megabyte
- 1024 megabytes = 1 gigabyte
- 1024 gigabytes = 1 terabyte
- 1024 terabyte = 1 pentabyte
And so on...
2 gig is well two gig - in what pounds, ounce's?
A gigabyte is 1,000,000,000 bytes. so 2 gigabytes is double that
Is the secondary storage faster than main memory?
No. The secondary storage is typically slowerthan primary storage. But the secondary storage has higher capacity than primary storage.
Transfer rate.
Is primary storage another name for memory?
Yes...Primary storage or main memory or internal memory is often referred to as memory.
Do the floppies follow direct or serial access?
serial because it takes a lot of time to retrieve information
What is the main benefit of a larger hard drive on your computer?
There will be more space for storing data. You can store more information at single "place".
A larger hard drive is handy for extra space. Of course you should still look how much space you actually need because it's useless to buy a hard drive with over 2 times the amount of space you need and that will only cost you more money. However you also shouldn't take it to small because you should be ready for the future where you might need more space again. So a larger hard drive has as a benefit that you can store more but don't spend money on the newest hard drives if you don't need all the space.
How do you delete data permenantly?
you delete it to your recycle bin and them right click on the item and press delete.
How data is organized on a magnetic tape disk?
1. When data is recorded onto magnetic tape, it is written in blocks with inter-block gaps between them. The rate at which data is written or read determines how the tape drives will have to cope with the rate at which data goes on and off the tape as well as the rate at which data is supplied to or demanded from the host.
How do you transfer files from one data storage device to another?
fire wire, map both drives cut and past Connect them both to the computer and copy the contents from one hard drive and paste it into the other. If you don't have enough USB interfaces ( connections) to connect them both then make a folder on your desktop and copy the files from the source hard drive into the folder on your desktop. Then connect the destination hard drive and move the contents from the desktop o your destination drive. From the Book on Hardware written by ME
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Which of the following is used as primary storage device?
The primary mass storage device is your hard drive. The hard drive is what everything you download is normally saved to. It also contains program files and recent activity on the computer.
What are the disadvantage of primary storage?
Well for mac you can only back up your data when you have a secondary storage hard drive, for windows it gives you more space to download and to use it, basic
What are two types of storage?
Well, the categories which storage devices are under, are PRIMARY and SECONDARY storage.
Primary storage is elctronic storage which is directly connected to the computer. Unlike the primary storage, the secondary storage is not directly connected to the CPU. But, te secondary has more advantages and one big disadvantage which was just mentioned.
memory stick, secure digital SD cards, hard disc, floppy discs, CD ROMs, zip disk,
The abbreviation is of Universal Serial Bus, which refers to the way the device corresponds with a computer in order to deliver or exchange files.
The physical link is a small 4-pole connector, but there is of course a goodly amount of controlling electronics with it.
There there are very many USB devices, of which the small portable memory "stick" is perhaps the simplest. Digital cameras also use USB connections to allow you to transfer images from them to computers.
