Operating Systems
... – Host controller in computer uses bus to talk to disk controller built into drive or storage array ...
... – Host controller in computer uses bus to talk to disk controller built into drive or storage array ...
CENG334 Introduction to Operating Systems
... Identifier – unique tag (number) identifies file within file system Type – needed for systems that support different types Location – pointer to file location on device Size – current file size Protection – controls who can do reading, writing, executing Time, date, and user identification – data fo ...
... Identifier – unique tag (number) identifies file within file system Type – needed for systems that support different types Location – pointer to file location on device Size – current file size Protection – controls who can do reading, writing, executing Time, date, and user identification – data fo ...
REF Chapter 3: Windows NT System Specifics
... physical file on the operating system with some other name that is resolved at run time. To accomplish this, Windows environment variables are enclosed by percent (%) signs. For more information, see BASIS Reference, “Environment Variables.” Environment variables and the names they represent can be ...
... physical file on the operating system with some other name that is resolved at run time. To accomplish this, Windows environment variables are enclosed by percent (%) signs. For more information, see BASIS Reference, “Environment Variables.” Environment variables and the names they represent can be ...
Chapter 12
... • Compare the logical and physical organization of files and directories • Explain how secondary storage locations are allocated to files and describe the data structures used to record those allocations • Describe file manipulation operations, including open, close, read, delete, and undelete opera ...
... • Compare the logical and physical organization of files and directories • Explain how secondary storage locations are allocated to files and describe the data structures used to record those allocations • Describe file manipulation operations, including open, close, read, delete, and undelete opera ...
Operating Systems and File Management
... Boot and Recovery Disks • You can create a custom recovery CD that contains your computer’s current settings and device drivers • Norton Ghost is a product of Symantec, which also provides a more specialized recovery disk called the Symantec Recovery Disk • Certain PC manufacturers have pre-install ...
... Boot and Recovery Disks • You can create a custom recovery CD that contains your computer’s current settings and device drivers • Norton Ghost is a product of Symantec, which also provides a more specialized recovery disk called the Symantec Recovery Disk • Certain PC manufacturers have pre-install ...
Implementing Processes, Threads, and Resources
... descriptor • Extract info needed to read/write file • Authenticate that process can access the file • Create an internal file descriptor in primary memory • Create an entry in a “per process” open file ...
... descriptor • Extract info needed to read/write file • Authenticate that process can access the file • Create an internal file descriptor in primary memory • Create an entry in a “per process” open file ...
Transaction Processing Systems
... • Every customer has a right to their own privacy and details stored such as credit card number, name and address have to be secure • The implementation of a new TPS would require staff to be skilled in different areas • Transaction data has to be secure during transmission to the mainframe as well ...
... • Every customer has a right to their own privacy and details stored such as credit card number, name and address have to be secure • The implementation of a new TPS would require staff to be skilled in different areas • Transaction data has to be secure during transmission to the mainframe as well ...
Operating Systems and File Management 4 Operating System
... 4 File Management Metaphors Storage metaphors help you visualize and mentally organize the files on your disks and other storage devices ...
... 4 File Management Metaphors Storage metaphors help you visualize and mentally organize the files on your disks and other storage devices ...
Storage Decisions 2003
... Original System V file system Veritas Journaling File System Journaled File System – AIX Cluster file system – Tru64 2nd/3rd Extended File System – Linux systems Global File System – Linux Journaling file system – Linux Extended File System – SGI and others Clustered Extended File System – SGI 64-bi ...
... Original System V file system Veritas Journaling File System Journaled File System – AIX Cluster file system – Tru64 2nd/3rd Extended File System – Linux systems Global File System – Linux Journaling file system – Linux Extended File System – SGI and others Clustered Extended File System – SGI 64-bi ...
File systems in Windows
... Windows stores the FEK as part of the file it has encrypted – so how to stop someone decrypting the file by using the FEK that is held as part of the file? Windows encrypts the FEK itself using RSA an asymmetric key algorithm – these are only suitable for encrypting small amounts of data (which the ...
... Windows stores the FEK as part of the file it has encrypted – so how to stop someone decrypting the file by using the FEK that is held as part of the file? Windows encrypts the FEK itself using RSA an asymmetric key algorithm – these are only suitable for encrypting small amounts of data (which the ...
Slide Set 7
... pipes and network connections, because these use file descriptors. Associates an I/O stream with the descriptor. ...
... pipes and network connections, because these use file descriptors. Associates an I/O stream with the descriptor. ...
V. Filesystems and Mass Storage
... system searches for file in the directory) – Read – at read pointer location (system call with name and destination). Pointer kept as a per-process current position. – Reposition within file – file seek. – Delete: release all file space and delete directory entry. – Truncate: maintain all attributes ...
... system searches for file in the directory) – Read – at read pointer location (system call with name and destination). Pointer kept as a per-process current position. – Reposition within file – file seek. – Delete: release all file space and delete directory entry. – Truncate: maintain all attributes ...
Chapter 7 Deadlocks
... The value of the file pointer will be initialized during Open to one of two possible values – Normally, this value will be set to 0 to start the reading or writing at the beginning of the file. – If the file is being opened to append data to the file, the File Position pointer will be set to the cur ...
... The value of the file pointer will be initialized during Open to one of two possible values – Normally, this value will be set to 0 to start the reading or writing at the beginning of the file. – If the file is being opened to append data to the file, the File Position pointer will be set to the cur ...
A Survey of Distributed Storage and Parallel I/O Technique
... by Google. GFS is a Linux-based distributed file system, BigTable is a distributed storage system, and MapReduce is a programming model that carries out distributed data processing. The GFS consists of three types of elements: a master that manages the chunk server location, file name, and lock; mul ...
... by Google. GFS is a Linux-based distributed file system, BigTable is a distributed storage system, and MapReduce is a programming model that carries out distributed data processing. The GFS consists of three types of elements: a master that manages the chunk server location, file name, and lock; mul ...
Handout13
... modified copies of files back when they are closed The UNIX file system is used as a low-level storage system for both Reading and writing bytes of a file are done by the kernel without Venus ...
... modified copies of files back when they are closed The UNIX file system is used as a low-level storage system for both Reading and writing bytes of a file are done by the kernel without Venus ...
Pixel
... resulting file has a .tar extension. The tar command does not compress files. Frequently, therefore, a tar file is compressed with the compress or gzip commands to create a file with a .tar.gz or .tar.Z extension. These are comparable to files that have been compressed with WinZIP on a PC platform. ...
... resulting file has a .tar extension. The tar command does not compress files. Frequently, therefore, a tar file is compressed with the compress or gzip commands to create a file with a .tar.gz or .tar.Z extension. These are comparable to files that have been compressed with WinZIP on a PC platform. ...
Supporting Software
... existing viruses are like and how they act and using this past knowledge when looking for new viruses. It will look for certain “behaviour” in code e.g. Code triggered by date or time events, code that searches for .exe files(programs), code that tries to write to disk in an unusual way. Heuristic d ...
... existing viruses are like and how they act and using this past knowledge when looking for new viruses. It will look for certain “behaviour” in code e.g. Code triggered by date or time events, code that searches for .exe files(programs), code that tries to write to disk in an unusual way. Heuristic d ...
PPT - CS
... • The read system-call provides a buffer address for placing the data in the user’s memory, but does not indicate the offset in the file from which the data should be taken. • The operating system maintains the current offset into the file, and updates after each operation. • If random access is req ...
... • The read system-call provides a buffer address for placing the data in the user’s memory, but does not indicate the offset in the file from which the data should be taken. • The operating system maintains the current offset into the file, and updates after each operation. • If random access is req ...
MULTIMEDIA Technology
... “compress” it. The seize of the file can be reduced by compressing the data. “Decompress” refers to returning compressed data to its original state. Compression/decompression software is used to accomplish this task ...
... “compress” it. The seize of the file can be reduced by compressing the data. “Decompress” refers to returning compressed data to its original state. Compression/decompression software is used to accomplish this task ...
Figure 11.01 - 醫學資訊系 鄭仁亮教授
... network failure, server failure Recovery from failure can involve state information about ...
... network failure, server failure Recovery from failure can involve state information about ...
ch11
... network failure, server failure Recovery from failure can involve state information about ...
... network failure, server failure Recovery from failure can involve state information about ...