MIS 431 Chapter 71 Ch. 7: Advanced File Management System MIS 431 Created Spring 2006

MIS 431 Chapter 72 Overview Configure file and folder attributes Configure advanced file/folder attributes accessible via NTFS Management disk quotas Implement the Distributed File System

MIS 431 Chapter 73 File and Folder Attributes Read-only: contents cannot be changed But a user can change the attribute so it is not a guarantee! Set from the General tab (Fig 7-1 p.259) Archive: file has changed since the last time it was “officially” backed up therefore should be backed up again Especially helpful when doing an incremental or partial backup (e.g., only back up files that have changed since the last full backup done)

MIS 431 Chapter 74 More File & Folder Attributes System – not used consistently now but was used to designate system files in MS-DOS folders. If Hidden and System are checked, the files are treated as “protected operating system files (or folders)” Hidden – causes file to not display in Windows Explorer. But they do appear with a transparent icon unless the System is also checked in which case they don’t appear at all. Act 7-1: Viewing & Configuring File and Folder Attributes using Windows Explorer

MIS 431 Chapter 75 File and Folder Attributes, contd. ATTRIB command – from the command prompt to display, add, or subtract attributes for a file or folder. Ex: D:\ATTRIB d:\docs\text.txt (displays) D:\ATTRIB +A +S +H +R d:\docs\text.txt will remove all of the attributes listed (A S H R) Act 7-2: Changing file attributes using the ATTRIB command

MIS 431 Chapter 76 Advanced Attributes Stored on NTFS partitions or volumes Access: click Advanced button on General tab See Fig 7-9 p.268 Archive and Index attributes (top box) “Folder is ready for archiving” Will do for entire folder, not just one file “For fast searching … allow indexing.…” The index is built and maintained in the background When a file is needed, the searching goes much faster to search the index and not the whole directory

MIS 431 Chapter 77 Advanced Attributes, contd. File compression attribute – reduces actual storage space required on the drive In old days, slowed the system down With fast CPUs, it can speed things up: less data is written and subsequently read, and the fast CPU decompresses it on the fly COMPACT command line utility If a file is copied, it remains compressed.

MIS 431 Chapter 78 Advanced Attributes, contd. Encrypt contents – secures data by encrypting with “private” file encryption key For recovery WS03 serves as the data recovery agent In event of loss of the individual’s private key, WS03 retains a backup key to decrypt. If file is copied to an unencrypted folder or volume, encryption travels with the file so long as the folder is NTFS CIPHER – command line utility to encrypt

MIS 431 Chapter 79 Disk Quotas Advantages Prevents users from consuming all available disk space Encourages users to delete old files as they reach their disk quota Allows an administrator to track disk usage for future planning Allows admins to track when users are reaching their limits Disabled by default Can establish total disk quote for a volume, not just individual user space

MIS 431 Chapter 710 Disk Quotas, contd. Can limit space OR just give a warning message to the user (but not prevent them from exceeding the quota) Can create a log entry when user exceeds limit Can give different limits to each user Can set limit and warning levels differently FSUTIL QUOTA at the command line prompt

MIS 431 Chapter 711 DFS – Distributed File System Allows admin to set up a simpler (to view) shared file system as though they reside in a single hierarchical structure Thus users don’t need to know which server their shares are on Allows logical growth of system See Fig 7-22 p.285 Two DFS models Standalone DFS – stored on 1 server Domain-based DFS model in AD (where else?) User must be using DFS client software

MIS 431 Chapter 712 DFS, contd. DFS topology or structure DFS root: main container holding links to shared folders; host server is the server holding this container DFS link: pointer to the physical location Replica set: set of folders copied to one or more servers that participates in replication Can set up replication for every n (~15) minutes

MIS 431 Chapter 713 Managing DFS Tasks to managing DFS Deleting a DFS root Removing a DFS link Adding root and link replica sets Checking the status of a root or link Use Distributed File System MMC (or create a custom MMC with desired tool set) – found in Administrative Tools To start, click Action and Create New Root