(DOCX, Unknown)
... When a file is deleted the FAT starts with the first cluster and marks that cluster as free to write onto, it then continues along the chain and does the same until all of it is flagged as clear for writing onto. At the end it goes to the directory table and flags the file as deleted at the end of t ...
... When a file is deleted the FAT starts with the first cluster and marks that cluster as free to write onto, it then continues along the chain and does the same until all of it is flagged as clear for writing onto. At the end it goes to the directory table and flags the file as deleted at the end of t ...
RAID 1
... numbered RAID levels, but it is a popular method for combining multiple physical disk drives into a single virtual disk. It provides no data redundancy. As the name implies, disks are merely concatenated together, end to beginning, so they appear to be a single large disk. ...
... numbered RAID levels, but it is a popular method for combining multiple physical disk drives into a single virtual disk. It provides no data redundancy. As the name implies, disks are merely concatenated together, end to beginning, so they appear to be a single large disk. ...
Storage Devices and Media Study Guide
... RAM stands for Random Access Memory, volatile memory or memory that loses its contents when the power is off. Volatile means it can be erased or closed out of easily. ROM stands for Read Only Memory. ROM is non-volatile and does not lose its contents when the power is off. Non-volatile means it can ...
... RAM stands for Random Access Memory, volatile memory or memory that loses its contents when the power is off. Volatile means it can be erased or closed out of easily. ROM stands for Read Only Memory. ROM is non-volatile and does not lose its contents when the power is off. Non-volatile means it can ...
Computer Performance Storage Devices & Size
... When users write data and store programs to the disk, the tracks are encoded with 0 and 1 bits. Cluster: The part of a track crossed by two or more side-by-side sectors forms a cluster. The smallest addressable unit of disk storage. FAT: The outside tracks contain a table, called the File Allocation ...
... When users write data and store programs to the disk, the tracks are encoded with 0 and 1 bits. Cluster: The part of a track crossed by two or more side-by-side sectors forms a cluster. The smallest addressable unit of disk storage. FAT: The outside tracks contain a table, called the File Allocation ...
RAID 2
... iFCP is a gateway-to-gateway protocol for implementing a fibre channel fabric over a TCP/IP Traffic between fibre channel devices is routed and switched by TCP/IP network The iFCP layer maps Fibre Channel frames to a predetermined TCP connection for transport FC messaging and routing services are te ...
... iFCP is a gateway-to-gateway protocol for implementing a fibre channel fabric over a TCP/IP Traffic between fibre channel devices is routed and switched by TCP/IP network The iFCP layer maps Fibre Channel frames to a predetermined TCP connection for transport FC messaging and routing services are te ...
PDL Back-up Policy - Panjab Digital Library
... Backing up data is a basic precautionary step that everybody working with computers should take. Backup copies are an insurance policy against the possibility of your data being lost, damaged or destroyed. A reliable backup mechanism is indispensable for every institution engaged in digital preserva ...
... Backing up data is a basic precautionary step that everybody working with computers should take. Backup copies are an insurance policy against the possibility of your data being lost, damaged or destroyed. A reliable backup mechanism is indispensable for every institution engaged in digital preserva ...
Database Performance Document
... theorems. Many academic and industrial researchers have tried to put tuning and query processing generally on a mathematical basis. The more complicated of these efforts have generally foundered because they rest on unrealizable assumptions. The simpler of these efforts offer useful qualitative and ...
... theorems. Many academic and industrial researchers have tried to put tuning and query processing generally on a mathematical basis. The more complicated of these efforts have generally foundered because they rest on unrealizable assumptions. The simpler of these efforts offer useful qualitative and ...
File Systems - The University of Alabama in Huntsville
... disk to memory – return to user as requested. • For sequential reading, buffering can (ideally) keep ahead of the user process, reducing the number of delays to wait for input. • Buffered output: Save writes until a full block has been written, then dump to disk. ...
... disk to memory – return to user as requested. • For sequential reading, buffering can (ideally) keep ahead of the user process, reducing the number of delays to wait for input. • Buffered output: Save writes until a full block has been written, then dump to disk. ...
Networking and the Internet – Glossary
... Box allowing the connection of several devices to a single USB cable or Ethernet LAN. The aggregate data-rate of all the devices is limited to the speed of the initial connection. The main virtue of Ethernet hubs is to simulate a bus while allowing each network card (“node”) to be connected by a sin ...
... Box allowing the connection of several devices to a single USB cable or Ethernet LAN. The aggregate data-rate of all the devices is limited to the speed of the initial connection. The main virtue of Ethernet hubs is to simulate a bus while allowing each network card (“node”) to be connected by a sin ...
Quick Recovery For MS Backup
... another folder, this deleted file may get overwritten! A folder may be somewhere and files under it may be somewhere else, they are linked by the FAT/MFT. Viruses may infect a computer today, but they affect harm on the system many days later or even years later. They require this time for spreading ...
... another folder, this deleted file may get overwritten! A folder may be somewhere and files under it may be somewhere else, they are linked by the FAT/MFT. Viruses may infect a computer today, but they affect harm on the system many days later or even years later. They require this time for spreading ...
5.10.3. Storage Area Network
... Whenever a failure occurs during writing of a block, the system detects it and invokes a recovery procedure to restore the block to a consistent state. To do that, the system must maintain two physical blocks for each logical block. An output operation is executed as follows: 1. Write the informati ...
... Whenever a failure occurs during writing of a block, the system detects it and invokes a recovery procedure to restore the block to a consistent state. To do that, the system must maintain two physical blocks for each logical block. An output operation is executed as follows: 1. Write the informati ...
Computer Fundamental
... The two primary types of disk in use are floppy disks and hard disks. A disk is basically a plotter that has coated with a magnetic material or reflective material in the case of optical disks. Like tape drives, disk drives are equipped with read/write heads. As the disk spins inside the drive the r ...
... The two primary types of disk in use are floppy disks and hard disks. A disk is basically a plotter that has coated with a magnetic material or reflective material in the case of optical disks. Like tape drives, disk drives are equipped with read/write heads. As the disk spins inside the drive the r ...
CRSP SuRvivoR-biaS-fRee uS mutual fund databaSe April 2013 quArterly updAte
... The holdings file in the Mutual Funds database hit a milestone this month in exceeding 4 GB in size. As a result, CRSP provides a new ZIP install of the database that can more easily handle large files than the previously used InstallAnywhere process. While introduced sooner than planned, the plan t ...
... The holdings file in the Mutual Funds database hit a milestone this month in exceeding 4 GB in size. As a result, CRSP provides a new ZIP install of the database that can more easily handle large files than the previously used InstallAnywhere process. While introduced sooner than planned, the plan t ...
First feedback from DC04 (CMS)
... Requirements are different to replica management Robustness and reliability paramount (raw data is the ‘crown jewels’) Throughput is very important: ‘best effort’ is not good enough ...
... Requirements are different to replica management Robustness and reliability paramount (raw data is the ‘crown jewels’) Throughput is very important: ‘best effort’ is not good enough ...
Raw Format - Sam Bowne
... Must protect acquired data with a well-tested write-blocking hardware device Tools can’t acquire data from a disk’s host protected area Windows Write-Protection with USB Devices USB write-protection feature Blocks any writing to USB devices Target drive needs to be connected to an internal PATA (I ...
... Must protect acquired data with a well-tested write-blocking hardware device Tools can’t acquire data from a disk’s host protected area Windows Write-Protection with USB Devices USB write-protection feature Blocks any writing to USB devices Target drive needs to be connected to an internal PATA (I ...
Hard Drives - Illumin - University of Southern California
... removability allowed for competition and many companies jumped on the opportunity. In 1973, the first modern hard drive was assembled. This design, dubbed “Winchester,” incorporates magnetic disks within a sealed enclosure [2]. The Winchester design principle is still used today. ...
... removability allowed for competition and many companies jumped on the opportunity. In 1973, the first modern hard drive was assembled. This design, dubbed “Winchester,” incorporates magnetic disks within a sealed enclosure [2]. The Winchester design principle is still used today. ...
Supporting Software
... Compression saves disk space but affects system performance as saving and loading takes longer due to the extra processing ...
... Compression saves disk space but affects system performance as saving and loading takes longer due to the extra processing ...
Document
... • Default set to 90% for fill factor • Clustered and non-clustered index sequencing • Handles blocks/Locks efficiently • Automatically stop itself beyond a threshold ...
... • Default set to 90% for fill factor • Clustered and non-clustered index sequencing • Handles blocks/Locks efficiently • Automatically stop itself beyond a threshold ...
Introduction to Hardware and software - KEN
... The 3 ½ inch drive bay is commonly used to secure the HDDs and floppy disk drives. While the 5 ¼ inch drive bay is used to securer devices such as a CD ROM. ...
... The 3 ½ inch drive bay is commonly used to secure the HDDs and floppy disk drives. While the 5 ¼ inch drive bay is used to securer devices such as a CD ROM. ...
RepliStor for XtenderSolutions
... In the figure on the next page, as new data is written to the “source” AX servers (left), RepliStor for XtenderSolutions operates normally to capture it, forward it, and update it on the “target” server systems (right). Those servers can be located either locally or remotely from the “source” AX ser ...
... In the figure on the next page, as new data is written to the “source” AX servers (left), RepliStor for XtenderSolutions operates normally to capture it, forward it, and update it on the “target” server systems (right). Those servers can be located either locally or remotely from the “source” AX ser ...
Lesson 5 IG 98-349 Instructors Guide Lesson05
... printing devices can be local or networked; they are also available over the Internet. A local printer is connected directly to your computer via a cable, such as serial, parallel, USB, infrared, or other port type. A network printer generally has a network adapter and is connected to a network. The ...
... printing devices can be local or networked; they are also available over the Internet. A local printer is connected directly to your computer via a cable, such as serial, parallel, USB, infrared, or other port type. A network printer generally has a network adapter and is connected to a network. The ...
Chap 3
... • Combines from 6 to more than 100 small hard disk drives into a single unit • Data are accessed in parallel over multiple paths from many disks • Redundant storage of data on several disks provides fault-tolerant capacity • Storage area networks can interconnect many RAID units ...
... • Combines from 6 to more than 100 small hard disk drives into a single unit • Data are accessed in parallel over multiple paths from many disks • Redundant storage of data on several disks provides fault-tolerant capacity • Storage area networks can interconnect many RAID units ...
Chapter 11: I/O Management and Disk Scheduling
... to a wide variety of devices and applications ...
... to a wide variety of devices and applications ...
Chapter 11 I/O Management and Disk Scheduling Scheduling
... to a wide variety of devices and applications ...
... to a wide variety of devices and applications ...