the network file system
Tài liệu Advanced Linux Programming: 7-The /proc File System pdf
Ngày tải lên :
26/01/2014, 07:20
... Mounts, and File Systems The /proc file system also contains information about the disk drives present in the system and the file systems mounted from them 7.5.1 File Systems The /proc/filesystems ... special file systems such as the /proc file system, this is none The second element is the mount point, the place in the root file system at which the file system contents appear For the root file system ... contents of /proc/filesystems list only file system types that either are statically linked into the kernel or are currently loaded Other file system types may be available on the system as modules...
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Locality and The Fast File System
Ngày tải lên :
16/08/2016, 18:50
... Awareness Is The Solution A group at Berkeley decided to build a better, faster file system, which they cleverly called the Fast File System (FFS) The idea was to design the file system structures ... what they did FFS thus ushered in a new era of file system research; by keeping the same interface to the file system (the same APIs, including open(), read(), write(), close(), and other file system ... example, if file f is opened, and then re-opened next in the trace (before any other files are opened), the distance between these two opens in the directory tree is zero (as they are the same file) ...
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Sun’s Network File System (NFS)
Ngày tải lên :
16/08/2016, 19:10
... distributed file system: the client-side file system and the file server Together their behavior determines the behavior of the distributed file system Now it’s time to study one particular system: ... Distributed File System Hopefully you are now getting some sense of how this protocol is turned into a file system across the client-side file system and the file server The client-side file system ... send a message back to the client with the requested data The client-side file system will then copy the data into the user buffer supplied to the read() system call and thus the request will complete...
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The Andrew File System (AFS)
Ngày tải lên :
16/08/2016, 19:11
... Vice), which would then traverse the pathname, find the desired file, and ship the entire file back to the client The client-side code would then cache the file on the local disk of the client (by ... the entire file on the server last and thus will be the “winning” file, i.e., the file that remains on the server for others to see The result is a file that was generated in its entirety either ... TestAuth GetFileStat Fetch Store SetFileStat ListDir Test whether a file has changed (used to validate cached entries) Get the stat info for a file Fetch the contents of file Store this file on the server...
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The Design and Implementation of a Log-Structured File System
Ngày tải lên :
12/09/2012, 15:05
... (i-number for the directory and the position ferent to the users than the Unix FFS-like file system in within the directory), the contents of the directory entry Sprite The reason is that the machines ... log-structured file systems In a log-structured file system, free space for the log can be generated either by copying the old blocks or by threading the log around the old blocks The left side of the figure ... the files densely in the log Furthermore, Sprite LFS only kept the disk 17% busy during the create phase while saturating the CPU In contrast, SunOS kept the disk busy 85% of the time during the...
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Navigating the Windows 2000 File System with “Windows Explorer” and “My Computer”
Ngày tải lên :
04/11/2013, 16:15
... and click on the (+) sign to expand the contents of the drive If the user clicks directly on the drive, the contents of the drive will be displayed on the right side of the screen On the left side ... Cisco Systems, Inc Step 2: Navigating the Windows 2000 file system using My Computer Double-click the My Computer icon located on the desktop This will display all of the drives located on the system ... Navigating the Windows 2000 file system using Windows Explorer Right-click the My Computer icon on the desktop or right-click the Start button and select Explore from the menu Locate the “local...
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Tài liệu Network Application Security Using The Domain Name System pptx
Ngày tải lên :
14/02/2014, 08:20
... signing the certificate, it is later possible to authenticate the data contained in the certificate (i.e., the public key) To authentiate a certificate, the knowledge of the public key of the trusted ... our example these servers not know the answer to the query either, but have delegated the authority over the kth.se zone to certain servers and it informs the client of their addresses The client ... sub-component in the query In our example, this means the root server is only able to tell the client the addresses of the servers responsible for se The client will now forward the same query to the se...
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Tài liệu The McAfee Network Security Platform: Bridging Network and System Security doc
Ngày tải lên :
14/02/2014, 16:20
... McAfee NAC detects and assesses systems attempting to enter your network and can enforce policy compliance on the systems before allowing them on to the network However, network security is not complete ... Integrating Network Security Platform and ePO enables you to query the ePO database for the details of your network hosts right from the Alert Manager The details that are fetched from the ePO database ... on the network Consider the following scenario to understand how Network Security Platform-ePO integration works: You notice in the Alert Manager that a host in your network is port scanning the...
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Cisco Systems - Scaling the network with NAT and Pat pot
Ngày tải lên :
06/03/2014, 15:20
... lists denying the packets from entering the NAT router – The access list referenced by the NAT command is permitting all necessary networks – There are enough addresses in the NAT pool – The router ... Router(config-if)#ip nat inside • Marks the interface as connected to the inside Router(config-if)#ip nat outside • Marks the interface as connected to the outside © 2002, Cisco Systems, Inc All rights reserved ... global Local IP addresses are seen in the inside network © 2002, Cisco Systems, Inc All rights reserved ICND v2.0—6-4 Port Address Translation © 2002, Cisco Systems, Inc All rights reserved ICND...
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THE AFTERLIVES OF COURSES ON THE NETWORK: INFORMATION MANAGEMENT ISSUES FOR LEARNING MANAGEMENT SYSTEMS pptx
Ngày tải lên :
17/03/2014, 20:20
... agreements with them a year after they have completed the class, when the faculty member and the institution realize that they want to archive student materials or reuse student work in the course ... just other class members and faculty, or perhaps the general public) Institutions will need to decide whether they need some affirmative agreement on file from the students to protect themselves, ... the conclusion of the course for a number of reasons The course site may be critically important documentation of the quality of teaching by the faculty member, becoming part of the future file ...
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Báo cáo hóa học: " Improving network energy efficiency through cooperative idling in the multi-cell systems" pot
Ngày tải lên :
20/06/2014, 22:20
... Figure 10 plots the network layout in the simulation The three BSs in the center are set as the cooperative cluster and 18 x 10 the nine BSs outside are set as the interference cells The inter-site ... di,j, l denote the distance from the BS i to the user j and the path loss exponent, respectively The random variable Ψ i,j accounts for the shadowing process The terms F i,j denotes the pathloss ... suitable for the downlink multi-cell systems because of the two reasons as follows For one thing, maximizing the NEE needs the global information in the cooperative multi-cell system but the users...
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Báo cáo y học: " The identification and management of ADHD offenders within the criminal justice system: a consensus statement from the UK Adult ADHD Network and criminal justice agencies" doc
Ngày tải lên :
11/08/2014, 16:23
... part of the community and treated within mainstream services with access to the same standards of health and social care as the rest of the population Nevertheless, it is recognised that there ... offenders the AA will be a parent and, given the hereditary nature of ADHD, this in itself may have implications for the custody process Furthermore, some countries not have the AA system in ... are the ‘eyes and ears’ of the prison They interact with inmates on an intensive, daily basis and, whilst they usually lack the ability to describe perceived difficulties in medical terms, they...
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The Practice of System and Network Administration Second Edition phần 1 docx
Ngày tải lên :
14/08/2014, 14:20
... doing the basics first These six principles are recurring themes in this book Simplicity means that the smallest solution that solves the entire problem is the best solution It keeps the systems ... didn’t have the problem before the move; then pass those requests to the move team rather than the usual escalation path • Formalize the process, limiting it to one day a week, doing the prep work, ... on the rise, and offshoring is the new buzzword The rise of India and China as economic superpowers has changed the way we think about the world AJAX and other Web 2.0 technologies have made the...
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The Practice of System and Network Administration Second Edition phần 2 doc
Ngày tải lên :
14/08/2014, 14:20
... prevent the entire system from working, the system can automatically activate the hot spare disk, making it part of whichever RAID set needs it This makes the system n + The more quickly the system ... features from their email clients, and different 5.1 The Basics 99 customers put different loads on the network, depending on the work they and how the systems they use are set up Other services ... to gather data and sum them Instead, send a longer SQL query to the server that gathers the data, sums them, and returns just the result Mathematically speaking, the problem is as follows The...
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The Practice of System and Network Administration Second Edition phần 3 docx
Ngày tải lên :
14/08/2014, 14:20
... in the data center, the HVAC system, the UPS charging, the phone switches, the SA work area, and the customer service center The security-access system is also on the protected power system The ... where there was a layer switch for that network The group network typically also includes file, name, and authentication services to that group on that same network, which means that the network ... different parts of the network and are not governed by the same set of policies or managed by the same management chain, the network needs a different model The various pieces of the network should...
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The Practice of System and Network Administration Second Edition phần 4 docx
Ngày tải lên :
14/08/2014, 14:20
... parts of the company Once that is done, an authorization system should be linked to the authentication system that implements the policy The set of identities and information stored in the authentication ... having to understand the technology, and they were able to break the tie where the SAs disagreed By the time the hardware was ready, the grid was complete The engineer installing the firewall only ... your existing authentication system? – What kind of load does it put on the network and other key systems? – If it has to talk to other systems or people through a firewall, are the protocols it...
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The Practice of System and Network Administration Second Edition phần 5 pps
Ngày tải lên :
14/08/2014, 14:20
... reversing the entropy of the system, taking one machine that was dissimilar from the others and making it the same again As the SA copied the /.profile from another machine, Tom questioned why they ... changes they will make, the systems and services affected, the reasons for the change, the risks, the test procedure, the back-out plan, how long the change will take to implement, and how long the ... whether the change should go ahead regardless of ‘ the weather’’ or wait until there is ‘‘good weather’’: the operating status of the service In other words, some changes are approved on the...
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The Practice of System and Network Administration Second Edition phần 6 doc
Ngày tải lên :
14/08/2014, 14:20
... when the cost model showed the systems to cost about the same per gigabyte of usable storage, the dedicated file servers had an advantage over the old systems: consistency and support The old systems ... using primarily a trap-based system, whereby the devices notify the monitoring system when there is a failure, rather than a polling-based system, whereby the monitoring system checks status periodically ... space rapidly or when they will need to add capacity to the backup system To answer these questions, the SAs realize that they need to monitor the systems in question and gather utilization data...
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The Practice of System and Network Administration Second Edition phần 7 potx
Ngày tải lên :
14/08/2014, 14:21
... because the network stack timed out while waiting for the filesystem to journal them When the application on the client side requested the file again, the file received did not match; the client ... benefit from the ability to move file traffic off the main network The network can be tuned for the file service’s particular needs: low latency and high speed The SAs is isolated from other networks, ... critical files When they do, their mistake will be copied to the mirror or parity disk Some RAID systems include the abilty to have file snapshots, that is, the ability to view the filesystem as...
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The Practice of System and Network Administration Second Edition phần 8 ppt
Ngày tải lên :
14/08/2014, 14:21
... used to perform the processing, leaving the CPU less loaded and better able to the remaining work of moving the data off the disk, through the card, and onto the network ❖ LAMP and Other Industry ... timed out The TCP FIN packet directs the machine to close the connection rather than wait for it to time out The SAs changed the hardware, and the architecture worked as designed Since then, the operating ... that stores the price of the item being purchased When the customer submits the form, the quantities chosen by the customer are used, with the hidden prices in the form, to compute the checkout...
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