CSE Seminar Topics - 1000 Projects

October 2, 2012

Latest CSE Seminar Topic on Backup and Restore in Network Storage Device

There is a necessity of the self tape backup or else the restore system to each and every DAS island which will have the group of tape cartridges along with the administrator for changing the cartridges of the tape. With the rapid increase within the growth of the islands the number of the cartridges will even increase along with the time period.

The SAN as well as the NAS are considered as the integrated storage that are capable of eradicating the different data copies and it will even be able to decrease the tasks and functions assigned to the administrator for carrying out the back up process. In order to improve or develop the performance of the tape devices they could be united with the different types of the tape backup farms.

By increasing the availability of the data the different types of the mirror copies of the data could be easily restored within the specified time from one part of SAN to NAS and NAS to SAN. This process will reduce the human based errors and it is even a cost effective process for the organizations.

October 2, 2012

CSE Seminar Topics 2012 on Network Buffer

Introduction to seminar topic on Network Buffer:

The multi server systems study in which many servers serve simultaneously the same queue, increased within the community of the computer with multiprocessors systems development in the 90s. With the mobile communications advance, more closely systems of multi server have become studied. For servers which are in multi server with restricted server number, specify K servers, the server development can be also classified as gate-limited and exhaustive-limited. In exhaustive-service, always all K servers are deployed as well as a service can be entered by a customer at a server which is empty while other services are serving other customers. This is named as Partial Batch Service.

For real systems many examples are presented which must be designed as systems of the gate-limited having bulk number of transport systems for example trains, buses etc. But with the internet emergence, distributed systems which are making use of semantics of client/ server can also be designed as bulk service of the gate-limited. Such system examples are network-based service in these systems, requests are being posted by the applications using the buffer of the network.

Then the buffer is transmitted over to server to these requests satisfaction. After the buffer arrived new systems has been transmitted, should in anticipation of replies to requests which are received previously have been revisited to the machine of the client, consequently this can be considered as system of the gate-limited multi server.

With Local Area Networks (LANs) faster development, services which are performed mostly on the machine which is local can be performed now over the network. One place in which many researchers are performed is in the storage area on other machines using the memory on a local area network to save information for example the Network Memory Server (NMS). This attempt has been concentrated on appearing at server way for example high-performance service can be offered by usage of the NMS such that the applications of the streaming can stream information without stalling while satisfying promptly misses of the demand to permit programs to sustain their execution. Such system can be displayed to be a system of a gate-limited however with requirements which are additional of identifying the perfecting amount as well as number of the misses of the demand which should be satisfied in a provided cycle.

To perform further investigation, a new model development was decided for gate-service depending upon Markov chains. Algorithms are developed using analytically model to balance demand paging as well as balance perfecting. Using a simulation testing was performed on this algorithm at the level of the system. Finally, to perform testing on this algorithm Experimental File System (EFS) was improved on a real system.

October 2, 2012

Queuing Systems Problems and Solutions

The queueing systems analysis has interesting but long history. In many practical systems this research result is implemented to serve customers from optimal strategies of queueing at centers of banking to systems which use token ring in computer networks which have high speed.

Some important results are yielded by these systems examination for example waiting time which is average for a customer in existed system or customer average in the system and to tackle normal performance issues for example under load how systems respond, etc. systems of queueing can be specified by using many parameters having the customer arrival time, the number of servers, and the service time.

Traditionally service disciplines which have two types and variants of these things are observed. The first one is named as exhaustive service where everyone is served by the server in queue awaiting the empty queue.

This specifies that at the queue customers arriving while at the queue the server is existed are served during the present period of the service. Second one is named as gated service, where only the server serves the customers in the queue it finds at the service period beginning for that queue.

October 2, 2012

Basics of File Storage Process Literature Review

The file is considered as the set of the collection of the information which is rationally assembled into the group of single individual which is being referenced through the specific single name called filename. Basically there are two types of the end user devices such as data files such as the text documents, the spreadsheets, the images, videos and the system files like operating system, the binaries as well as the libraries of the applications.

The files are explained with their name as well as they are being stored managed and then accessed. The directories are so called the folders that can be considered as the organizational structures which are being utilized by the file systems towards the group files. The main purpose of the file systems is to secure and store the different types of the files, the system and data files, the metadata which is upon the storage media.

The lasting data is even maintained by the storage media which is considered as the data that is gathered from the deleted files. By making use of the end user devices as well as the forensic analysis process the lasting data could be recovered in an easy manner.

October 1, 2012

Threats of Different Types of Storage Devices Seminar Topic

In general in the recent time period there are different types of the existing threats related to the privacy of the information that is stored in the end user devices like the computers, the customer devices like phones, digital accessories, the different types of the removable storage devices such as the USB, memory card, the external hard drive, CD as well as DVD. The threats are of two types such as unintentional and the intentional.

The human based errors are referred to as the unintentional errors. The intentional threats will takes place because of the different types of motivations such as troubles and interruptions along with different attacks. The thefts and device losses are the major threats that will takes place in the end user devices. The other specific problem is that the individual who is having the physical access of the devices then that individual will be able to access and copy the information which is stored in those particular devices.

The other threat is that the insider attacks which means one employee accessing the information of the other employee by using the devices. The Malware is happened to be one of the other important threat which will allow the unauthorized access to the devices for the different attackers in order to transmit the information from the device that belongs to the attacker system and will carry out some activities such as the exposing the confidential information present in the device. The various types of threats that are towards the devices of end users will always allow access of the information present in it to the unauthorized users.

For protecting the information from these types of threats, there is a necessity of the using the strong security measures. There is even a need of protecting the components that belongs to the end user devices such as the operating system because it plays a vital role in storing the information. The encryption as well as the authentication is considered as the two significant aspects that can be used for the purpose of securing the data from the unauthorized access and users.

The encryption is the process which is applicable to the individual file which is having the secret information which will encrypt the entire data stored in the devices. The specific solutions for the encryption are totally based on the types of data, and quantity of data that is to be secured the environmental circumstances, location as well as the reduction levels of threats.

In general there are three different types of the encryption solutions for these threats such as the full disk encryption, the volume as well as the virtual disk encryption, the file or else the folder encryption. The specific encryption method is used based on the security requirements of the devices.

October 1, 2012

MS Dissertation Literature Review on Solid State Memories and RAM

Solid state memories

Memories of the solid state are becoming rapidly the medium which is dominant for storage of information in digital systems. Steady is presented in their ascendance, slow is presented until recently. Dramatically solution has modified during previous few years as a consequence of circuit and technology advances providing substantial advantages to the user in words of versatility, performance and cost.

The industry of semiconductor is considered as one high technology which is characterized by ever greater complexity, improved performance and decreasing prices. With this supply frustrations, product obsolescence and poor component standardization, with product life which value is less than five years time. In no place has this true than in memories of semiconductor as well as especially integrated circuits of random-access-memory of metaloxide-silicon dynamic.

The task of memory-systems designer has turn into very many anxieties not only with choosing the most suitable component for specific application, however also in selecting the best technology as well as the correct vendor.

RAM

Memories of the computer can be separated into important categories: serial-access as well as random-access memories, a crack which reflects performance/ cost trade-off by the manufacturer of the computer. R.A.M. presently specifies the market major part. It was improved with a strategy of product targeted at emulating systems of core memory. With this market which is associated is considered as largest technologies range, manufacturers and devices. Even within any one device and technology capacity, different products proliferation may shown. Such as, the dynamic RAM of 4 k ^-channel available having at least five of three different packages pin out versions with numerous variations of electrical-specification. Recently only did the types of the 16-pin 4027 really undisputed leadership of the command.

Second category is also specified here which is named as serial memories. These memories are specified in which information may be located in or subtracted from a place in specific sequence of the time. The shift register of serial-out/ serial-in is considered as simple example. At current time serial memory is adapted using magnetic disc or tape. Now this position is threatened by two technologies which are new. These are magnetic-bubble devices and charge-coupled devices. In specifically require to compare and consider the roles of m.b.d.s. and c.c.d.s in micro computing systems as serial memories.

Charge coupling is considered as all mobile collective transfer within the element of a semiconductor mobile electric charge saved to similar, by voltages external manipulation adjacent element. The stored charge quality in this ‘packet’ of mobile can widely vary, based on, such as, the voltage which is applied. The electric charge amount in every packet can specify the data in an analogue sense.

Basically two c.c.d types are presented, one is buried channel and another one is surface channel. With devices of surface channel, the charge is saved as well as passed at the surface of silicon, whereas, with devices of buried-channel, the silicon substrate doping is changed so that the transfer and storage of charge takes area in the silicon bulk just beneath the surface of silicon.

In operation, the device of a charge-coupled can be about as an m.o.s. transistor simple extension, as well as is dramatically shown in figure. The basic devices have closely spaced control linear arrays of electrodes on the electric layer of continuous silicon-dioxide dielectric, which covers the substrate material of the single-crystal silicon. Charge transfer as well as storage performed in the device channel regions generally which are bounded by stop diffusions of high concentration channel. Within the beneath of the depletion region the channel is presented as given electrode is named a charge packet.

October 1, 2012

Literature Review on Designing a High Performance Storage Server

In network continuous increase and speeds of CPU is fostering the new class development of applications which are new depending upon streaming, for example BBC iPlayer and YouTube. Unlike traditional applications of the client server which use transport mechanisms which have best-effort, QoS support is required by these new applications to deliver performance which is acceptable.

Demand misses are also supported by storage systems that happen when the data block is required by program to sustain execution of it.

Misses of the demand should thus be satisfied promptly or else delays of the server execution will be experienced by applications. As a result it is required to balance the prefetching demands by making use of the clustering as well as the requirement to satisfy promptly misses of demand. To explore the storage servers design this has high performance, at Middlesex University Network Memory Server (NMS) is developed.

The Network Memory Serve characteristics

With many key goals, NMS has designed. Firstly the NMS actions are considered as atomic by clients of it. These properties indicate that reason is presented to assume distribution which is Poisson for the rate of arrival and the service can assumed also to be exponential because the memory less system is presented with observe to transaction which is preformed previously.

October 1, 2012

Performance Simulation of Read Channel Performance Literature Review

In this scenario, examine how distribution and the geometry of patterned islands, i.e. length, period and size of island affect the read channel performance in bit error terms against SNR and thus identify the configuration of the best media to provide performance of the optimum read channel. In addition, characteristics of other media, for example thickness of film as well as an SUL presence, will be inspected.

To facilitate work, simulation of a readout has been improved which considers the patterned media three-dimensional (3-D) nature and predicts accurately the waveforms which are replayed as the media characteristics functions. In addition, the readout simulation of the 3-D predicts also the contribution of the signals arising because of inter-track-interference (ITI) in waveform which is readout.

To recognize the performance of the data recovery, “partial-response maximum-likelihood (PRML)”simulation of the read channel has been also developed. The gained simulation will be employed to assess the common partial-response goals range performance applicable for make use in storage medias which are considered as patterned media.

Read channel of patterned media as well as designs which are wrote has been previously analyzed by Hughes for media which is 100-Gb/in² without and with an SUL. The work which is existed here focuses on the storage densities of 1-Tb/in²as well as in many areas enhances understanding by using the replay process 3-D model as contrasted to Ruigrok and Potter two-dimensional (2-D) approaches, which more predicts accurately the probable distribution underneath read head of the giant-magnetoresistive (GMR) in an SUL presence.

By introducing ITI more realistic case in wave form which is replay; by examining how the island bit-aspect ratio (BAR), period, geometry, as well as distribution affects the performance of the read channel BER; by accurately modeling the lithography jitter effects consideration in the position of island both shifts and variation in the island size; by making use of simulation of the full channel, which models all the components of the read channel and creates the BER by measuring data at the read channel output in error, rather than using approaches which are considered as analytical procedures; and by examining a read channel of PRML incorporating polynomial of generalized-partial-response (GPR) which is optimized.

October 1, 2012

CSE PPT Topics on Magnetic Storage Systems

In storage systems which are based on patterned media, the data which has single bits are recorded to distinct; nanometer-sized defined lithographically islands, each ideally single domain. The shape, size as well as distribution of islands depend on the process of the fabrication which is implemented, which is under the media designer’s control.

The main benefits of patterned media in excess of conventional media using film which is in continuous magnetic thin is the capability to get around the limit of super para-magnetic In system which is considered as the magnetic storage, the SNR (signal-to-noise ratio) is communicated to the magnetic grains number per bit which is recorded.

In bit size which is recorded a reduction needs a grain size reduction to retain enough grains number per bit as well as sustain the SNR which is acceptable. But, as sizes of grain are decreased they become thermally less stable, to such degree that storage of the media is no longer feasible.

In the patterned media case, the magnetic islands which are formed by the grains are coupled strongly and, as and output, do not need size reduction of any grain. In accumulation, because of region which is nonmagnetic between islands, noise which is transition is ubiquitous in continuous thin-film which depended upon media, effectively is removed.

Between tracks presented nonmagnetic region also allows the side tracks removal which presented in continuous film depending upon media to give guarantee about enough separation presented between the tracks which are recorded; this also allows the “built-in” tracking capabilities possibility.

October 1, 2012

Seminar Topic on Read Channel Performance for Patterned Media Storage

An Investigation of the Effects of Media Characteristics on Read Channel Performance for Patterned Media Storage:

In magnetic storage systems data capacities advances have been possible only using both continued refinement of the recording and the storage media as well as the heads replay properties. Longitudinal magnetic media is employed by present commercial systems, where the magnetization lies’ direction in the continuous magnetic film plane. It is predicted that the magnetic recording systems future generation will employ increasingly specific media, where magnetization lies direction perpendicular to the film plane; in this management, increased capacities of the storage have been examined by making comparison with the longitudinal media.

The shift to perpendicular media has created many technical challenges; notably most, the requirement for heads of the single-pole recording, media fabrication which is thin-film perpendicular on magnetic under layers (SULs) which are soft, as well as the design development of new read channel by reason of the differences of the signal spectra between perpendicular and longitudinal systems.

All challenges have been tackled successfully as well as made commercial perpendicular drives realization possible. But, beyond perpendicular media, few people consider the patterned media use will be required to gain densities of the storage media in 1 Tb/in²excess as well as trounce the physical barriers that made restrictions on densities of ultrahigh-storage in continuous media.

Such shift which is a paradigm will introduce undoubtedly further difficulties which are technical that must be beat to realize specific storage systems; not slightest, the difficulties associated with the media fabrication.