Summary:
This is the article, the brief on the future of computer storage and power options. Many of us use computers and systems, but we do not know many details about the preservation and storage options that exist today. For these people, you can easily know the brief introduction and an overview of storage options today - Personal and Enterprise from this article.
Hard Disk Drive:
If anyone hears of computer storage,He might suddenly think of this hard drive only. It is a common storage option, the majority of PCs. After 1990, the evolution of the hard drive more and more. So easy to take our PC games without the storage options. Compare with other storage options, this is the smartest storage for personal computers. There are two main types of hard drives used in systems today. They are
or magnetic disk drives
O solid stateDrives
Magnetic hard disks:
Magnetic hard disk is a digital data storage device that reads and writes data by altering the magnetization of a magnetic storage disk. This includes one or more of random access storage media, swivel, or disks. Today's magnetic hard disks are on the market in terabytes. Yes, a single hard drive that memory as much as a large storage server. The first commercial magnetic hard disk drive introduced by IBM in 1956 with 5 megabytes of storage. But the lastyears has introduced 1TB Hitachi hard disk magnetic. This year 2008, Seagate announced the 1.5-TB HDD for personal and business use. These HDD with data transfer rate is almost 16 to 20 Mb / s.
Solid State Disks:
The design of solid-state drive starts with a combination of each block as the flash memory, the memory controller, RAM, RAM controller, host processor, and so on, M-Systems' first drive flash-based solid-state, introduced in 1995. (SanDisk acquired M-Systems in November 2006). Since then,flash-based SSD's high standards in critical military and aerospace, and others. Today in SSD, Flash is used as permanent storage and RAM is used as temporary storage between the processor and flash for increased performance.
It is very suitable for small handheld computers and notebook computers, because it has no moving parts, requires less power, Host data transfer rate up to 3Gb / s and a silent operation. Until mid-2007 only 64GB (Samsung &SanDisk) solid-state drives are commercially available in the format that is compatible with laptops. Also this year, Samsung announced a super-fast 256 GB, 2.5-inch solid state disk. Super Talent has announced the world's thinnest 256-GB 2.5-inch SSD drive. Toshiba has also launched three families MLC flash SSD with SATA interface.
Optical Drives:
The main applications of optical storage discs are content sharing, backup and archiving, and not for primary storage. It has a capacity of 300MB to 30 GB. Before the evolution of optical storage disks, magnetic disks used for data exchange and small warehouses. Because of the very small deposit (1.44 MB) and the duration of the little floppy, optical drives, has passed. There are four main types of optical discs are available for commercial use today. They are
or Laser Disc
or compact disc (CD)
or Digital Versatile Disk (DVD)
or Blu-ray Disc (BD)
Laser Disc:
The laserdiscwas the first optical storage medium used for commercial purposes, especially for the film industry. Paul Gregg invented the laser technology in 1958, using a transparent disk. Laserdisc are famous for 80 audio tracks and even if the (Video Home System) VHS and CD / DVD format in use has exceeded the Laserdisc. It seems 30 inches in diameter and consists of two single-sided discs. Laserdisc is actually an analog format as opposed to CDs or DVDs aredigital. Now, laser discs, no market, but some people use this old track.
Compact Disc:
The most common form of optical storage is the CD (Compact Disc). Even with the advent of more powerful optical media, CDs remain a popular way for industries including software, games, music and film package. These units provide economical and easy to use backup and the physical transfer of data files. normal compact discs are available in two ways. One is CD-R(Write Once Read all several times) and CD-RW (read and write a little '). A standard CD has a capacity of about 74 minutes of music to audio CDs and have about 700 MB. But the actual capacity depends on the size of the writing.
Digital Versatile Disk:
This is the new form of compact discs, known as DVD. It has an extension such as digital video discs. It also includes the separation DVD-R and DVD-RW as above. DVD offers a standard 4.7 GB (singleLayer) / 8.5 GB (dual layer) of storage. But it seems that the same CD. We are able to read / write CDs in DVD burner, CD burner, but not read DVDs.
Blu-ray:
These next-generation optical disc, capable of high-definition video and other high density memory account. A one-sided Blu-ray disc can hold 25 GB of storage, while a dual-back capable of storing 50 GB. The Blu-ray size is comparable to that of CDs and DVDs - 120 mm in diameter. It uses 405 nm laserso it is only mentioned as a Blu-ray. It offers 54 Mbps transfer rate is higher than both CD (150 Kbps) and DVDs (11.1 Mbps). Blu-ray is more expensive and slow to produce, mainly used as storage for Playstation Game.
RAID:
It 'been expanded, as Redundant Array of Independent Disks. This is a technology that the simultaneous use of two or more hard drives to a higher level of performance, reliability and amounts or larger than size of data to get the job. A RAIDdistributes data across multiple physical disks. There are three different types of RAID concepts. They are
O Software RAID
or hardware RAID
Or Firmware / driver based RAID
Tape Storage:
The main use of tape storage is storage and online backup to primary storage. Today's tape is the most packed in cartridges and cassettes. Tape drives can be connected to a computer with SCSI and Fibre Channel usual, FICON, ESCON, parallel port, IDE, SATA,USB, FireWire or other interfaces as well. It has the following advantages.
O It offers the lowest cost per megabyte of storage for all options.
or very high capacity per cartridge.
or laptop
The same one that also has some limitations.
or very slow operation (both reading and writing)
or relatively short lifespan compared to other containers
Subject to risks and environmental degradation
The difference between the data tape storageand disk storage of data is that the tape is a sequential access media, while the disc is half of random access. Today, tape storage is used for data that does not need to save, but a backup if the deceased patients to the hospital to take.
Network Attached Storage:
E 'commonly known as NAS, used as a storage server business. These devices contain embedded processors that one type of operating system or microprocessor able to understand and execute network protocolsis optimized for specific tasks such as file services and network back-up etc., NAS is an ideal choice for companies looking for a fast and convenient way to quickly access data for customers on the truce. Some key benefits of NAS are listed below.
file or can be easily shared by users in high demand and performance
files or are easily accessible with the same account from different locations
o The demand for local storage on the desktopreduced
efficient storage or can be added and shared between users-Highly scalable
o The data can be taken form the common store-effective desktop
or more file servers can be consolidated into a pool of storage managed
Storage Area Network:
E 'commonly known as SAN. This is a high performance network storage to transfer data between network servers and storage devices from the environment. For atwo normal human beings, SAN and NAS lead to confusion. These two are used as a storage server, but the main difference is using LAN NAS, SAN, but will not be used. Some of the benefits of SANs to NAS are listed below.
or exceed
O reduces bottlenecks in the network
or highly scalable
Performs or storage with minimal impact on production
Or flexibility in the configuration.
Online Backup:
The above methods are usefuland fast, and many have a lot of low-cost storage. For companies, the big problem is coming at the time of the disaster, hurricanes, earthquakes, fires, and the data server computer backup can be destroyed. There is also the problem of theft, of course. But the online backup services, Internet to save critical files in your computer more secure, off-site server via the Internet.
Remote Backup Online Backup Services ago. What isbackup via Internet to a remote location to protect against some worst-case scenarios described above. A disadvantage of this connection is usually much slower than the speed of local data storage devices and the risk associated with putting control of the data trade secrets in the hands of third parties.
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