Filerecovery PowerPoint PPT Presentations
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A: FDISK.EXE /MBR. Windows NT/2000/XP...boot from floppy or CD-ROM, ... Recovery software (even FDISK) lets you specify a partition to be made active partition ...
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Ubuntu (Live CD use aptget) - http://www.ubuntu.com ... Ubuntu Example. In terminal. Install gddrescue $ sudo apt-get install gddrescue ...
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Recovery ... Defined Memory and Disk Usage. Write Order Intact Replication. Bandwidth Friendly Data Movement ... Double-Take Server Recovery Option ...
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Recovery = Copy Master File (MF) from backup. Copy Master Index ... Recovery time depends on MF & MI size #transactions since last ... of disk accesses ...
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Regular (ASCII, binary) Directories. Character special files. Block special files. File access ... File Position Field in Process Table ...
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No fault recovery. Analysis - Chubby. Low volume storage. Flat access ... File handles and advisory locks. Event notification service. KeepAlive piggybacking ...
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Implementing the Buffer Pool ... hash page_id via buffer table hash function; ... Buffer pool. Relation r. Relation s. John Sieg, UMass Lowell ...
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Presents a new file system architecture allowing mostly ... Unix file systems typically can use only 5-10% 11/8/09. 28. Crash recovery (I) Uses checkpoints ...
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The Recovery Process. File recovery: Disable original file. Regenerate transactions on 'snap' DB ... VAL) Static copy of Production database. Recovery purposes ...
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During transaction, current page table records all updates to database. ... natural or human activities can damage or render vital information assets inoperable. ...
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The archive bit indicates if the file is new/modified since the last Normal or ... Generally, prepares Disaster Recovery Disks which must be updated when system ...
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... stuff a real system needs (backup, recovery, comms, ...) the TCB is no longer ... 'System Z': as BLP but lets users request temporary declassification of any file ...
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RAID is a set of physical disk drives viewed by the OS as a ... Redundant disk capacity is used to store parity information, which guarantees data recovery ...
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?????? ?? ??????????? Recovery Console ???? ????? ??? ?????????? ?? ????????? ... ?????? ?? ??-????? ?? ????????????? ? Total Paging File Size For All Drives. ...
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Example: what to do at recovery? Redo log (disk): T1,A,16 T1,commit Checkpoint ... Buffer containing X can be flushed to disk either before or after T commits ...
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disk cache separate section of main memory for frequently sued blocks ... Disk is much slower than memory ... Recovery ...
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... of commits to disk. Atomic compound data ... EBOFS writes saturate disk for request sizes over 32k ... Manage replication, failure detection, and recovery ...
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eg Can you perform Disaster Recovery from your Backup? ... AMANDA Backup Recovery. A full file system may be able to be recovered: cd /temp ...
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Recovery (protection & restoration) Lots of other functionality ... Recovery. RFC4427 Terminology. Protection pre-allocated backup resources ...
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Provides both Backup and Crash Recovery. Removable Hard disks for data recycling ... Bare Metal image restored from last Disk File Backup ...
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Utilizes, Server Certificates or GSA Access Certificates for Electronic Submissions (ACES) ... Naming & Directory Services. Security/Access Controls. Backup ...
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FREE Compusec. Freeware, but not Open Source. ... Having free full disk encryption options are great, but they may cost more money ...
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Uses lease timeouts for lock recovery ... independent recovery ... Disk Layout ...
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If disk I/O eliminated then transactions would be cheap. Two problems concerning failure ... Lives on top of Rio file cache. How it works. Undo log for before image ...
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Pointer to the checkpoint is recorded in the restart file. Recovery from a System Failure ... Recovery. Determine the most recent local checkpoint at the failed site ...
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ELF: An Efficient Log-Structured Flash File System For Micro Sensor Nodes ... Flash pages have limited life ... Roll Forward ...
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After inspection, the inspector enters the results of the inspection into a file. ... Disaster recovery plan. Training programs. Review product inspection ...
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Recovery. Log-Structured File Systems. NFS. Example: WAFL File System. 11.3 ... Random access is quick and easy ... Simple, fast, easy to find contiguous space ...
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Design, Capabilities, Limitations. Development Process ... Database-oriented web development. Logistics. Webpage: www2.bc.edu/~spang. Reference Material ...
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Write on commit: write operations will be written to disk when the file is closed. ... Fault tolerance: server recovery; Scalability: no tables is kept on ...
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create(dirfh, name, attr) returns (newfh, attr) remove(dirfh, name) returns (status) ... Concept of the Virtual File System (VFS) ...
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Automated application-level checkpoint/recovery. HSM. A new/novel hardware infrastructure ... stage file from tape if not already on DMF disk cache. 02-Jun-03 ...
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Vital Record Backup and Recovery. Records Retention. Migration. Transfer to ... Disaster Recovery Backup Vs. Vital Records Archive. Information is STILL On-Line ...
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File systems have more overhead but are easier to manage and backup ... Forces redo logs with recovery from the time of the backup ...
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Simple only starting location (block #) and length (number of blocks) are required. ... To make lookup faster, a directory name lookup cache on the client's ...
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... a logical device number, node number pair to identify a file in the system. ... With many copies of MFT file recovery is easier. I/O SYSTEMS. I/O SYSTEMS IN UNIX ...
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... it as a candidate for Disaster Recovery. Microsoft Clustering ... File recovery. Application recovery. Full server recovery. On-demand recovery. Enhanced Backup ...
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Really only good for disaster recovery. 5. Replication Today. Mix of technologies ... Disk based replication. Clustering. Publisher/Subscriber model ...
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No config file needed for non-complicated/small installations. Generality ... Uses load balancing to effect recovery. New servers can be added at any time ...
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Run 'fsck' to scan entire disk for consistency ... Slow recovery from crashes. 5. Consistency: Unix Approach (Cont'd.) Data consistency ...
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File/directory names & pointers to FCB's ... FCB representation includes data blocks of a file ... Log-Based Recovery ...
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Resilient Storage and file systems -Extending applicability of checkpoint ... Replication (backup core) -- Rollback Recovery (replicate locally and restart globally? ...
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Attributes of Good Software ... ??????? Definition. ???????. Technology. ??????? ??????. Latest. ? ??????? ??? ?????? ????????? ...
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Due to the large quantities of clinical and molecular ... Columbus, Ohio. DCC tools. Master. input. input. replicate. output. Hardware. Dell Poweredge 2900 III ...
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Eliminating Improper Payments
Software for PCs free. Resources continuously monitored, reducing bottlenecks ... Burn files to DVD or CD-ROM, and mail them directly to clients ...
