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Topic: Secondary storage

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Computer storage

Primary storage

Computer memory

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	Computer storage - Wikipedia, the free encyclopedia
		Secondary storage requires the computer to use its input/output channels to access the information, and is used for long-term storage of persistent information.
		The relevant unit of measurement is typically nanosecond for primary storage, millisecond for secondary storage, and second for tertiary storage.
		In early computers, magnetic storage was also used for primary storage in a form of magnetic drum, or core memory, core rope memory, thin film memory, twistor memory or bubble memory.
	en.wikipedia.org /wiki/Computer_storage (2577 words)

	Secondary storage - Wikipedia, the free encyclopedia
		In computer storage, secondary storage, or external memory, is computer memory that is not directly accessible to the central processing unit of a computer, requiring the use of computer's input/output channels.
		Secondary storage is used to store data that is not in active use.
		Secondary storage is usually slower than primary storage, or internal memory, but also almost always has higher storage capacity and is non-volatile, which makes it perfect for the preservation of stored information in an event of power loss.
	en.wikipedia.org /wiki/Secondary_storage (114 words)

	Secondary Storage
		It is important to know the difference between secondary storage and a computer's main memory.
		Secondary storage is also called auxiliary storage and is used to store data and programs when they are not being processed.
		Secondary storage is more permanent than main memory, as data and programs are retained when the power is turned off.
	tdi.uregina.ca /~complit/storaged.html (751 words)

	How Computers Work: Disks And Secondary Storage
		Storage capacity is unquestionably one of the most valuable assets of the computer.
		Secondary storage, sometimes called auxiliary storage, is storage separate from the computer itself, where you can store software and data on a semi permanent basis.
		Secondary storage is necessary because memory, or primary storage, can be used only temporarily.
	homepage.cs.uri.edu /book/disks_storage/disks_storage.htm (3426 words)

	Secondary Storage - Lecture 3 (Site not responding. Last check: 2007-10-22)
		Compared to main memory, secondary memory is slower, bigger, and cheaper (per unit storage.) Any method for secondary storage must involve two physical parts: a peripheral device (the component of the computer which 'reads' in or 'writes' out the information to/from the system unit,) and an input/output medium, on which the information is actually stored.
		In most methods of secondary storage, this transfer is realized by passing the medium by a read/write head, which is capable of sensing/writing information from/to that type of medium.
		Secondary storage media may be removable (easily separable from the computer) like your diskettes, or fixed, like hard disks, which, for example, can be found in relatively expensive PCís.
	www.cmpe.boun.edu.tr /~say/c150/intro/lit3.html (890 words)

	Secondary Storage (Site not responding. Last check: 2007-10-22)
		Secondary Storage is external from the CPU, it is a more permanent way of storage.
		Secondary storage devices can be used for both input and output of data.
		There are four main types of secondary storage medium and two methods of storing and retreiving information from them.
	oz.plymouth.edu /~budhp/Spr98/2ndstorg.html (454 words)

	Secondary Containment Options Tanks - Divisions of STI/SPFA (Site not responding. Last check: 2007-10-22)
		Secondary containment tanks first appeared in the United States in the early 1980's, when several local and state jurisdictions were just beginning to investigate tank leakage and promulgate rules for hazardous wastes and chemical storage.
		Secondary containment was one of the solutions to the problem of storage tank leaks.
		Whether or not secondary containment is mandated for their specific application, owners would be well advised to consider the investment as an economically, and environmentally, sound tank installation.
	www.steeltank.com /library/pubs/secondary.aspx (1654 words)

	Smart Computing Article - secondary storage device to Sega (Site not responding. Last check: 2007-10-22)
		A secondary storage device is a type of storage other than a computer's primary storage area, which is usually the hard drive.
		Secondary storage devices are designed as a backup to the main storage, and they store data on a long-term basis.
		Secondary storage is the nearest thing to permanent storage, but it will eventually wear out or be discarded due to outdated technology.
	www.smartcomputing.com /editorial/article.asp?article=articles/archive/r0604/05r04/05r04.asp (3493 words)

	SECONDARY STORAGE DEVICES
		SECONDARY STORAGE DEVICES are used for the long term storage of data.
		Secondary storage media is useless until it is FORMATTED.
		The internet is also being used as a secondary storage device for many businesses.
	www.angelfire.com /sc/cpt101/secstorage.html (532 words)

	Secondary storage catches up on growth - Express Computer
		One cannot write off the value of secondary storage (tapes and discs) as enterprises explore new ways to use both tape drives and discs for storing their data.
		As far as the disc storage market is concerned, it is expected that PC growth, which drove hard disc drives in 2005, will continue to do so in the current year.
		While secondary storage is showing tremendous growth momentum in the Indian market, it is expected that new technological innovations like advanced capacities at lower price points will continue to hit the market.
	www.expresscomputeronline.com /20060327/secondarystorage01.shtml (2786 words)

	Chapter 4: Secondary Storage (Site not responding. Last check: 2007-10-22)
		Summarize the secondary storage alternatives for a PC, including which secondary storage systems should be included in all PCs and when the other systems would be appropriate.
		All secondary storage devices and their adapters are peripheral devices, i.e., they are not part of the CPU/Memory.
		Secondary Storage media are nonvolatile: When power to the device is shut off, the data stored on the medium remain.
	www.deltacollege.edu /emp/acofod/fundamentals/Chapter04SecondaryStorage.html (1319 words)

	Using SATA Arrays for ILM Secondary Storage (Site not responding. Last check: 2007-10-22)
		Storage requirements in enterprise data centers are increasing exponentially.
		Although this secondary storage need not perform as well as production systems, it must be reliable and provide robust functionality.
		Secondary storage holds business important information, data that needs to be online, but is only accessed occasionally and can tolerate lower performance.
	www.ilmletter.com /English/Newsletters/2005/Articles/200503_Article_SATASecondary.html (477 words)

	☞ storage - computer secondary storage - computer secondary storage online guide (Site not responding. Last check: 2007-10-22)
		The secondary storage usually has a higher capacity than the primary storage, but is in turn...
		In computer storage, secondary storage, or external memory, is computer memory that is not directly accessible to the central processing unit of a computer, requiring the use of computer's input/output...
		Secondary storage, also known as peripheral storage, is where the computer...
	www.all-storage.info /computerstorage/computer-secondary-storage.html (527 words)

	Secondary storage facility empolying serial communications between drive and controller - Patent 4837675
		A secondary storage facility having a drive and a controller employing multiple error recovery techniques; the controller signals the drive to try such techniques in sequence, according to descending a priori probability of success.
		Therefore, it is an object of this invention to provide a secondary storage facility and, more particularly, an interconnection between controllers and drives in such a facility, wherein the complexity and costs of interconnecting a drive with its controller are reduced over prior secondary storage facilities.
		Yet another object of this invention is to provide a secondary storage facility in which the cabling between the controller and drive may be physically small, utilize a minimum number of conductors and be up to at least one hundred feet in length.
	www.freepatentsonline.com /4837675.html (12990 words)

	SECONDARY STORAGE (Site not responding. Last check: 2007-10-22)
		First, let me explain what secondary storage is. Secondary storage devices are used for long-term reservoirs for data, and include such magnetic tape, magnetic disks, and optical disks, and their respective drives.
		The best part of secondary storage devices is that they have the ability to record information so that the user can look at it again both on the same computer as well as others.
		With technology this method of secondary storage has changed dramatically, so that now a great deal of it is digitized, and the tape cartridges have become much smaller, but still they have been phased out greatly.
	home.sandiego.edu /~sgrueser/handson_5.html (856 words)

	Secondary storage
		The storage capacity of a floppy disk was once sufficient for most purposes—when very few programs were longer than about 400 Kbytes and data files were relatively small.
		The FDC is responsible for moving the read/write head in the disk drive to the appropriate track, and for translating the format of the data between that used by the microprocessor for storage in memory and that required by the disk drive for recording on the disk.
		The term secondary store was once synonymous with disk drives and tape transports, although magnetic bubble memories challenged the disk drive as a secondary storage device for a time and optical memory is replacing disk and tape drives in many applications.
	www.alanclements.co.uk /BCSweb/secondary_storage.htm (7842 words)

	Secondary Storage Applications
		Free up valuable primary storage space - add Nexsan's SATABeast SATA RAID array to your network as secondary storage and move data you want to save but don't frequently access.
		This IP SAN and secondary storage solution is especially ideal for businesses looking for a more cost effective and easier to manage storage system that incorporates RAID functionality - especially those in which archiving (e-mail, video surveillance, medical records, etc.) is critical.
		Storage management resides in the switch, enabling you to manage all storage from one convenient location including volume management, data backup and redundancy and more
	www.rad-direct.com /Application-secondary-storage.htm (600 words)

	CSci 1000 - Secondary Storage Ch. - Bateman
		Secondary storage is any place other than RAM or ROM where programs or data are stored.
		Thin plastic tapes coated with iron oxides are used for secondary storage.
		Solid State - this is RAM used for secondary storage.
	www.apsu.edu /~batemanj/STORAGE.HTML (1129 words)

	InfraStor TechNote: Hierarchical Storage Management
		Often, high-performance storage is being used to store data that is for reference only, or for data that is older and thus now infrequently used.
		By implementing an automated system and policies for migration of such data to less expensive disk storage, or to tape, the useful life of existing storage capacity resources can be indefinitely extended.
		The secondary server can be a NAS device, SAN-attached storage, or a second CaminoSoft IP-connected device that manages a connection to a tape library.
	www.infrastor.com /technotes/hierarchicalstoragemanagement.htm (930 words)

	Storage Networking World Online - Best of Coumputerworld Storage Knowledge Center - Disk arrays gain in use for ...
		Relatively inexpensive secondary disk storage is gaining a significant foothold in corporate data centers, according to a survey of more than 1,000 IT managers that's due to be released next month.
		But secondary disk storage typically involves less than one-fifth of a company's total data, said Farid Neema, president and CEO of Santa Barbara, Calif.-based Peripheral Concepts.
		Over the past 12 months, vendors such as EMC Corp., Network Appliance Inc. and Storage Technology Corp. have released ATA-based disk arrays for storage of near-line data, snapshot copies and information that will eventually be archived on tape devices.
	www.snwonline.com /storage_knowledge_center/disk_arrays_05-05-03.asp?article_id=240 (478 words)

	DSstar: Online Data Protection Solution Redefines Secondary Storage
		Axion uses hard-disk storage to deliver online accessibility for all protected data, while its highly efficient software reduces the amount of data stored and moved over networks by up to 99% compared to conventional solutions.
		"Secondary storage accounts for 80% of the data in a typical enterprise, but the limitations of tape storage have restricted the ability to access that data.
		The storage address for any data element stored in the Axion system is generated by an analysis of the data itself, in a process that ensures the authenticity of the data.
	www.taborcommunications.com /dsstar/02/1022/104949.html (773 words)

	SECONDARY STORAGE (Site not responding. Last check: 2007-10-22)
		In internal hard disks and external hard disk drives, the storage capacity is fixed, but in the hard disk cartridge, the capacity limitation of storage does not exist.
		The capacity of the storage is considerably greater than their magnetic disk counterparts, and optical disk storage may eventually replace all magnetic tape and disk storage.
		This is a sequential storage device that is usually used for a backup purpose.
	home.olemiss.edu /~misbook/hdsestm.htm (2329 words)

	SECONDARY STORAGE (Site not responding. Last check: 2007-10-22)
		Instead, secondary (auxiliary) storage is needed to permanently save data and programs until they are needed, at which time the computer will load them from secondary storage into primary memory.
		The general term for the secondary storage containers of data and programs is "files"; however, the term is so general that it has many, often confusing, uses.
		Storage capacity is a function of the number of tracks per inch (TPI), the number of disk in a disk pack, and the bit density (bits per inch, bpi) of the disks.
	faculty.frostburg.edu /cosc/htracy/cosc100/PERIPHERALS/SecStore.htm (3877 words)

	SECONDARY STORAGE (Site not responding. Last check: 2007-10-22)
		VARIOUS MEDIA There are two main catagories for secondary storage media Magnetic and Optical.
		Diskettes range from a common Personal computers floppy disk (1.44MB of storage) to larger capacity disks such as those used with ZIP Drives (100MB of storage).
		The cd-rom is a little different from the other types of storage media we have talked about so far.
	oz.plymouth.edu /~budhp/BU324/storage.html (279 words)

	Jim Forrester - Secondary Storage Options
		The demand for secondary storage, that which is used for backup or archiving purposes, continues to grow for a number of reasons.
		Again, secondary storage must be available to backup these large files, as well as offer a convenient means of portability between individual computers.
		Tape storage is consequently, very suitable for reading or writing large blocks of information at one time, such as backing up an entire hard drive.
	home.rochester.rr.com /jforrester/0602410.htm (2221 words)

	IKEA \| Home \| Secondary storage
		IKEA has storage solutions for difficult spaces, such as the cellar, garage, attic and store room.
		It's good storage, both for the things you use every day and the things you need to store for longer periods.
		With the help of a wide variety of accessories, you can adapt a storage system for everything from hard jobs in the garage to an attractive piece of furniture in your hall.
	www.ikea.com /webapp/wcs/stores/servlet/CategoryDisplay?storeId=3&langId=-15&catalogId=10103&cattype=top&identifier=06514_irwtree003 (140 words)

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