In a computer, a file system (sometimes written filesystem) is the way in which files are named and where they are placed logically for storage and retrieval.
This is the presentation I have in OS course. Mainly focus on the linux file system part and only points out the difference about the Windows file system of NTFS, but I have not dig into it.
In a computer, a file system (sometimes written filesystem) is the way in which files are named and where they are placed logically for storage and retrieval.
This is the presentation I have in OS course. Mainly focus on the linux file system part and only points out the difference about the Windows file system of NTFS, but I have not dig into it.
In computing, a distributed file system (DFS) or network file system is any file system that allows access to files from multiple hosts sharing via a computer network. This makes it possible for multiple users on multiple machines to share files and storage resources.
Assume you have decided to implement DFS so remote sites can access .pdfivylinvaydak64229
Assume you have decided to implement DFS so remote sites can access files and folders. What
are the requirements for DFS? What are benefits of using DFS? What are the shortcomings and
limitations?
Please provide reference in APA format
Solution
There are many benefits:
Unified namespace A DFS namespace links together shared folders on different servers to create
a hierarchical structure that behaves like a single high-capacity hard disk. Users can navigate the
logical namespace without having to know the physical server names or shared folders hosting
the data.
Location transparency DFS simplifies migrating data from one file server to another. Because
users do not need to know the name of each physical server or shared folder that contains the
data, you can physically move data to another server without having to reconfigure applications
and shortcuts, and without having to re-educate users about where they can find their data.
Storage scalability You can deploy additional or higher-performance file servers and present the
storage on the new servers as new folders within an existing namespace.
Namespace scalability Servers running Windows Server 2003, Enterprise Edition or Windows
Server 2003, Datacenter Edition can host multiple domain-based DFS roots and stand-alone DFS
roots. This feature improves the scalability of DFS, enabling you to build many large
namespaces without having to add file servers to host the roots.
Increased availability of file server data When multiple servers running Windows Server 2003
host a domain-based DFS root, clients are redirected to the next available root server if any of
these servers fail, providing fault-tolerant data access. To ensure the availability of stand-alone
DFS namespaces, you can create the root on a clustered file server.
Alternate site selection based on cost By default, if a target in the same site as the users fails, or
if no same-site target exists, DFS refers clients to a random target. If you configure the optional
site costing feature, DFS can use the site information in Active Directory to locate an alternate
target that has the lowest-cost network connection as defined by the administrator in the Active
Directory Sites and Services snap-in. After site costing is enabled, clients can access data on
DFS targets over the optimum network connection.
Load sharing DFS provides a degree of load sharing by mapping a given logical name to shared
folders on multiple file servers. For example, suppose that \\\\Company\\StockInfo is a heavily
used shared folder. By using DFS, you can associate this location with multiple shared folders on
different servers, even if the servers are located in different sites.
Intelligent client caching When a user requests access to a target that is a part of a DFS
namespace, a referral containing the target’s information is cached on the client. The next time
the client requires access to that portion of the namespace, the client uses the cached referral
instead.
2. Distributed file system (Dfs) allows Administrators to make it easier for users to access and manage files that are physically distributed across a network. With Dfs, you can make files distributed across multiple servers. It may appear for Users that files actually reside in one place (computer) on the network. DISTRIBUTED FILE SYSTEM
3. 4. Users require uninterrupted access to shared folders. Reasons 1. Users who access shared folders are distributed across sites. 2. Most users require access to multiple shared folders. 3. Server load balancing could be improved by redistributing shared folders.
4.
5.
6.
7.
8.
9. DFS Terms DFSROOT : DFS root is the beginning of a hierarchy of DFS links that points to shared folders DFSLINK : A link from a DFS Root to one or more Shared files or folders TARGETS : The Mapping destination of a DFS Root or Links which corresponds to a physical folder that has been shared
13. DISK QUOTA Disk quota tracks and control disk space usage for NTFS Partitions Prevent further disk space use and log an event when a user exceeds a specified disk space limit. You can use disk quotas on drives formatted with the NTFS file system to monitor and limit the amount of disk space available to individual users.