Solid State Storage Systems Computer Science Essay

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Rather than magnetic and optical media solid state storage systems are non-volatile and this is worked with integrated chips. Solid state storage is almost equivalent to large-capacity non-volatile memory. For example Flash memory USB (Universal serial bus) .

Solid state storage didn't contain any mechanical parts this is the main advantage and this is one system means which contains everything in one electronically. By using electrochemical devises data transfer rate very high. We can use this advantage in solid storage systems. And also as per above mentioned this is one devise electronically that means this system didn't contain any mechanical parts this is the advantage for long life for the devise. And this is also provides advantages like we can easily carry and it didn't exposed to electro chemical discharge.

Compare to viable technology Solid State Storage is very strong because in mass storage containing magnetic storage.

Introduction:

Now in every where i.e. companies, shops and public places using the strong devices. They are looking for the small place for the store big data. In here I am focusing on how they are moving to viable technology for mass storage from solid state storage. A type of hardware device are these are contains no moving parts as like usually, this device is made up of electronic chip circuit board.

Regions for Use a Solid State Drive:

Compare to the magnetic hard drives, Solid state drives have number of advantages. The main region at this point is solid state drives does not have any moving parts. Because of use of Flash memory chips to store the data in Solid state drives we have mainly three advantages has fallows.

Less power Usage: The power plays a main role in Solid state drives to use in portable computers. Compare to the traditional and hybrid hard drives it draw less power. Due to there is no power draw for the motors in solid state drives uses less energy than the normal hard drives.

Faster Data Access: Solid state drives Data access is fast compare to the hard drive. Because of the drive doesn't have to turn up the move drive heads and the data can be read directly from the near drive.

Higher Reliability: Solid state drives have higher reliability because of there is less moving parts compare to solid state drives, hard drive platters are sensitive and delicate materials. If any sort impact occur there are less moving parts to be damaged because of all the data in solid state drives stores in memory chips.

The basics of solid state storage:

Solid state storage is based on the semiconductor components and it doesn't have any rotating or mechanical parts. The term Solid state storage is used to refer the data storage is class of storage other than the magnetic media. SSDs are a special type of solid state storage and the package of these flash based storage devices are similar to HDDs in shapes that are for enterprise system typically 3.5 inches and for consumer drives 1.8 inches. The solid state drives are communicate with an input output controller, host adapter controllers via standard i/o interface such has serial attached SCSI, serial advanced technology attachment, and Fibre channel. The following points explain about SSDs briefly.

In Solid state memory devices Wireless protocol write signal is converted into USB protocol signal these is done by conversion layer in the wireless protocol controller. And the conversion protocol is can translate the USB protocol read signal into a wireless protocol read signal.

In the solid state memory storage device the frequency of ultra wideband signal has at least 7 GHz wide.

The function of the microcontroller is decodes the logical memory into physical memory.

Solid state memory storage devices have NAND architecture.

By using the Flash NAND cell technology the Solid State Floppy Disk Card is designed.

Single-level cell and Multi-level cell are the main two types of flash technology devices that are used into the solid state storage drives. Single-level cell provides high performance and this is the more commonly used flash technology used in enterprise applications, it has longer life but this technology is more costly and less capacity. SLC is most strong flash technology, and it has 5, 00,000 write cycles. Multi-level cell uses vendors to increase capacity and life and this multi-level technology is less cost, it is best for consumer applications, and it has 10, 000 write cycles. Compare to MLC the Single-level cell is most reliable and no mechanical failure modes.

Solid state Disk Technologies:

Solid state disk store the data in digital form and it mostly uses the semiconductor components to store the data. By using these semiconductor memory components in place of mechanical devices we have mainly two advantages are higher and significantly improved performance.

Based on the type of memory used solid state disks are divided into three types:

DRAM based SSD

SRAM based SSD

Flash memory based SSD

Dynamic RAM solid state disk: Dynamic SSD have quick read and write cycle times. The DRAM cell size is smaller than that of SRAM. The DRAM cell has high storage density and low cost per stored bit. Dynamic SSD are depending on the volatile memory components.

Static RAM solid state disk: SRAM SSD are the fastest read and write cycle times and it does not need cyclic refresh cycle to prevent the stored stuffing. Static RAM solid state disk are high cost, its large size and it has volatile nature of the memory.

Flash memory based SSD: Flash memory based SSDs uses Flash memory chips in place of volatile memory components. The read access time of F-SSD is similar to the DRAMs. And write time is high. The cost of F-SSDs is low and flash cell size is smaller.

Performance of Flash Storage Devices:

The performance of Flash storage devices depends on the following factors

The specific Flash memory chips used

The Flash storage devices controller

The host devices to which the Flash storage devices is connected

NAND Flash Memory:

NAND Flash Memory devices are commonly used in solid state hard drives. These are invited after the NON Flash memory devices. The advantages of NAND Flash memory devices are the speed of read and write is high, and it divides the data into small blocks. NAND Flash devices are less cost and ideal for the data storage. NAND Flash devices are also used in digital cameras.

The process of retrieving the warehoused information is called Data mining. Data warehousing is the process of built around the relational data bases. The Data base efficiency is directly proportional to the speed of files stored.

An external storage library efficiency, effectiveness and performance are improved by the solid state disks. Here the host system is directly connected to the network.

Flash Memory Technology:

The combination of EEROM and EPROM technologies is called as Flash memory technology. Here the Flash term is chosen due to the region is it erased a large amount of memory at single time. In EEROM technology each bite is erased individually. And the flash memory technology is physically powerful compare to other non volatile memories. To develop the flash memories AND, NAND, NOR, DINOR architectures are necessary.

EPROM memory cell Flash memory cell

Flash memory and EEPROM technologies have same cell gate length i.e. 0.7 micrometer. The cell size and density of Flash memory technology are 6micrometeresquare and 4 Mbit. And the EEPROM cell size and density are 5.52micrometeresquare and 1Mbit.

The data retention, thin oxide stress and over or under programming are the main reliability concerns in the Flash memory devices. In the Flash ICs hot electron injection process is used to trap the electrons in to the floating gate.

http://www.bitmicro.com/imgs/applications/nas1.gif

  Library attached configuration is more expensive. Host attached configuration solid state disks stores the indicator files and it take very less time to transfer the files. A storage service provider depends on the ability to provide IOPS, availability of enough storage capacity and transfer bandwidth.

Solid state drives use the Real-tie A/V applications for the future development of internet and network layer. The performance needed for a real time video and animation requirements are provided by SSDs.

http://www.bitmicro.com/imgs/applications/nas2.gif

In the above figure SSDs used as the high speed face end in a configuration is shown in the upper part of the figure. The lower part shows the SSDs used as high performance interim storage and it develops the transfer bandwidth. The range of access time is 30 to 50 nanoseconds.

. RAID sub systems have high data availability and high degree data integrity. So now a days these subsystems are most used subsystems. The success of RAID configuration depends on the data protection, availability and accessibility.

RAID system disks can be replaced with solid state storage drive. Based on the performance and cost we can estimate the number of working Solid state drives utilized.

 

http://www.bitmicro.com/imgs/applications/raid.gif

  Solid state drives are used as parity disk and write cache. The RAID performance is improved by using the SSDs. The RAID system also used in networked configurations.

SSDs Applications:

Since solid state storage devices use less power it has following applications. Due to the less power uses the cost of SSDs are very less compare to other type of hard drives.

The Marginal Performance Improvements

This type of applications does not display the significant performance improvements. The following are the few marginal performance improvements

The text which utilize columnar accesses like applications or databases,

The type of storage access with hard coded database,

Total or compute bound applications,

The real time applications which have hard coded disk access,

And highly distributed networked applications.

The significant performance improvements:

The significant performance has the access bottlenecks performance.

These are very significant,

The implementation is very simple,

And it is transparent to the applications.

Database:

By using the database the SSDs are rewrites the applications and it simplify the table layout. The solutions of SSDs are limited by the server bus bandwidth and the SSD selected unit. RAM commonly uses 12 TB SSD, where as in Flash chips 63TB is used.

Video server: if the Solid state drive solutions are implemented in two step method then this video or file server applications have infinite storage capacity.

The below figure shows the video or file server configuration, here this configuration is limited by the availability of the number of network connections.

Unlimited capacity video/file server

SSD VS HHD:

Solid State Drive is more reliable, non volatile and fast than the Hard Drive Devices. The following table shows the comparative analysis of SSD and HDD.

SSD

HHD

Industry standard dimensions

x

x

Industry standard interface

x

x

Rugged or no moving parts

x

Ultra low power consumption

x

Silent operation

x

Fast access time

x

Fast enter or exit hibernate

x

Low power consumption:

The hard drive devices use the more power because of it has the motor it is use the more power to spin the disk. But in the Solid state drives power efficiency is very high due to the lack of moving parts. Compare to the HHDs, the Solid state drives use very less power nearly 95% less power. Compare to the HHD, the SSD is better to use in the mobile computing. The below figure shows the usage of power differences in SSD and HHD.

characteristic Power consumption in watts

Fast performance:

The read/write operations are very fast in Solid state drives and for the maximum throughput performance the SSDs are better than the HDDs. The performance of SSDs are very fast due to the there is no need to spin the disk. The typical access time of the SSD is 0.5microseconds but in the HDD it double than SSDs i.e. 11microseconds.

Rugged and Reliability:

The Hard drives have rugged parts and less reliability because of HDDs have rotating magnetic and moving magnetic disks. Due to use of moving parts HDDs are failure in the use of desktop computers. In Solid state drives memory is stored in chips those are sol rated on the integrated circuits. In any applications the Solid state drives are none vibrated and no shock risks. In industrial usage purpose SSDs have the temperature of -40degrees to -80 degrees. The general operating temperatures of SSDs are 0C to 70C. Where has in HDDs operating temperatures in the range of 0C to 60C.

Silent operation:

Since there is no use of moving parts in the SSDs these are totally silent. In many computer's hard drive and cooling fans produces the noises. Due to the use of moving magnetic disks HDDs are performed noise operations.

Weight:

Generally the Solid state drives are half of the weight as compare to the weight of hard drives. The main regions for the solid state drives have less weight than hard drives are Solid state drives have the aluminium casing and it doesn't have any motor parts like hard drives.

Finally by considering above points for any application peruses Solid State Drives are better than the Hard Drives.

Conclusion:

Solid state storage devises are most commonly used in all over the world. In coming day mass storage is replaced by Solid State Storage. This didn't take much time because big organizations and individual users already using these devises for their systems. Because solid State Storage Systems are lot of advantages like very less power consumptions, controls heat consumption , it tolerate vibrations and also shock, Reading the data is very fast because this didn't cont ain read/write header and very less impact with file fragmentation.

Only disadvantage with Solid State Storage is these are bit cost compared with HDD. But other benefits justify the cost.

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