Data Storage And Retrieval Of Data On A Storage Medium

Windows Server 2008 uses the NTFS V. 3.1 file system. Some of the basic features incorporated into NTFS include: Long filenames, Built-in security features, Better file compression tan FAT, Ability to use larger disks and files than FAT, File activity tracking for better recovery and stability than FAT, Portable Operating System Interface for UNIX support, Volume striping and Volume extensions, and Less disk fragmentation than FAT. Allowing for many security setups, and larger files to be stored/used on the computer, NTFS is a large improvement from previous FAT versions. Also, files can now be compressed by more than 40 percent, saving vital disk space for other needs!

Well-organized file names and folder structures make it easier to find and keep track of data files. A system needs to be practical and used consistently. Without organization, you cannot report data effectively.

The first medium I want to cover is a hard-drive that is used inside computers and servers. A hard-drive can be broken up into different partitions, which sets up a volume with a single file system and a unique drive letter. These partitions of the hard-drive are kept track in a table called a partitions table. A hard-drive uses NTFS which breaks the drive into sectors of 512 bytes. These different sectors are stored

Function- responsible for storing all documents and data, including files, the operating system and more.

List and describe at least three types of storage that is typically included in all computer systems.

a File or space on the hard drive where data from RAM is "swapped" in order to preserve space.

a. By reading the file system’s directory information, which is stored on the storage device

Sequential file organizations access data sequentially from the beginning [1], i.e. to reach file 27, the 26 preceding files must be accessed first. They are much slower to access compared to random access [1]. Sequential files are stored on a sequential access device [2]. The records contained in sequential files are stored in a predetermined order [2], according to the value of a search key [1], and are stored one after the other [2] as they are inserted into the file. Records can only be accessed (read from and written to) sequentially (i.e. in the same order that they were entered) [3]. Sequential files are designed for efficient processing [1]). Records stored in sequential files cannot be deleted,

Blocks are the logical records which breaks the area used by a partition; clusters are physical bodies of a hard disk. Hard disk is usually broken in to cylinders and cylinders are broken down in to clusters. Most HDD arrive from the factory with a low level pattern where, block size = 512 bytes. The NTFS file system can produce cluster sizes of a multiple of 512 having a default of 8 blocks for every cluster. Size of a block is multiple of size of cluster, such that a logical block will fit a definite number of physical clusters “one file one cluster”. That is, in every cluster will be installed information belonging at most to a single file. As an aftermath, when scripting a file in a hard disk, some cluster remains incompletely filled or fully unused. As the operating system can only write an entire block, it pursues that the idle space should be fit with some strings of bytes that can be used by others. It should be remembered that these data are saved in a disk because of the operating system curbs to write only on an entire block, they could be detected by locating

HDFS is Hadoop’s distributed file system that provides high throughput access to data, high-availability and fault tolerance. Data are saved as large blocks making it suitable for applications

Storing information is the process where information is deposited or stored in a storehouse (cabinets, HDD, memory stick, etc) and retrieving information is the process of obtaining the stored information resources relevant to the needs.

Operating systems (OS) provide an important function for all computers by governing hardware and software resources. Currently, there are various OS’s in use today, the most prevalent being Android, Linux, Windows and Mac OS. Furthermore, these OS’s can be found in various devices, which can provide digital forensic investigators with multiple sources of data. However, before digital forensic investigators collect and examine digital information from OS’s, it should be understood that the information stored in OS’s is in non-volatile and volatile conditions.

It is the type of disk in which the space is fixed. it doesn’t matter how much data you store.

We are quite aware of the different file systems that consist in both Linux and Windows. For Linux, we have the following file systems: ext*, XFS, JFS, reiserfs, and btrfs. In Windows we have the following file systems: FAT, NTFS, and exFAT. Our focus in this paper is going to revolved around these file systems with a thorough report and analysis about them.

In the ancient times, people used memories, wood, knots and cave paintings to remember places, knowledge, life experience and stories. These were the only few ways to storage information at that time and they were unreliable because people’s brain could forget information easily and other like the cave painting and wood could be eroded by nature. After the invention of the paper making technology, people started to write information on papers. It was much easier and better than before, but the papers were fragile they couldn’t stay fresh for very long time, also thousands of years ago only royal families and noble families had the chance to use well-made papers, so papers were also not reliable. In the twenty-first centuries, people have invented a lot of different appliances to storage knowledge and data, magnetic storage is one of the most popular and practical ways to use for storage data. In the future of storage, the central issue is the field of information, in order to content the needs of rapid development of the information society, it is necessary to increase the storage capacity. Now in the world, especially in the developed countries, scientists are paying a lot of attention on the magnetic storage technology. Magnetic storage develops faster and faster.