Disk Caching
Disk Caching is a process for improving the time it takes to read from or write to a hard disk.The disk cache is usually included as part of the hard disk. A disk cache can also be a specified portion of random access memory (RAM).
The disk cache holds data that has recently been read and, in some cases, adjacent data areas that are likely to be accessed next. Write caching is also provided with some disk caches.
Disk Caching is a process for improving the time it takes to read from or write to a hard disk.The disk cache is usually included as part of the hard disk. A disk cache can also be a specified portion of random access memory (RAM).
The disk cache holds data that has recently been read and, in some cases, adjacent data areas that are likely to be accessed next. Write caching is also provided with some disk caches.
Redundant arrays of inexpensive disks
(RAID)
RAID is a technology that allowed computer users to achieve high levels of storage reliability from low-cost and less reliable PC-class disk-drive components, via the technique of arranging the devices into arrays for redundancy.
For the large business organizations, which not only need to store terabytes of invaluable data but access them frequently as well. These organizations cannot afford to let their systems go offline even for a short duration of time. Moreover they cannot even think of losing even small amount of data due to disk failure or for that matter any other reason.
File compression and decompression
RAID is a technology that allowed computer users to achieve high levels of storage reliability from low-cost and less reliable PC-class disk-drive components, via the technique of arranging the devices into arrays for redundancy.
For the large business organizations, which not only need to store terabytes of invaluable data but access them frequently as well. These organizations cannot afford to let their systems go offline even for a short duration of time. Moreover they cannot even think of losing even small amount of data due to disk failure or for that matter any other reason.
File compression and decompression
File Compression is particularly useful in communications because it enables devices to transmit or store the same amount of data in fewer bits. It is also widely used in backup utilities, spreadsheet applications, and database management systems.
File decompression is a technical that change the information in a computer document back into a form that can be easily read or used, when the information was stored on the computer in a special form that used less space on the computer's memory.
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