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Storage virtualization
Storage virtualization

... QUESTION PAPERS | NEWS | VTU RESULTS | FORUM | BOOKSPAR ANDROID APP ...
Intro to the Class
Intro to the Class

... to create another logical drive, with no drive letter and no formatting On the two remaining unallocated drives, repeat the instructions to create an Extended partition and Logical drive for the entire disks ...
5th unit OS Notes
5th unit OS Notes

... A structured file is a collection of records, where a record is a meaningful unit for processing ...
OBJECT STORAGE ARCHITECTURE
OBJECT STORAGE ARCHITECTURE

... These capabilities are highly desirable across a wide range of typical IT storage applications. They are particularly valuable for scientific, technical and database applications that are increasingly hosted on Linux cluster compute systems which generate high levels of concurrent I/O demand for sec ...
File System - WordPress.com
File System - WordPress.com

... The actual transfer speed depends upon several factors, such as the computer's speed at reading and writing to the device. Generally, a pen drive's advertised speed is the reading speed because it is faster than the speed at which data can be written to it. Manufacturers usually list the speed in me ...
Backup types and strategies
Backup types and strategies

... The archive bit is turned off (cleared) after some backup operations. This indicates to future backup operations that the file has been backed up. As soon as the file is modified or any new files are created the archive bit is turned on. This indicates to future backup operations that the file has b ...
Immutability Changes Everything
Immutability Changes Everything

... may not be changed. All we can do is describe the contents the way they are at the time the DataSet is created. SQL DDL can be thought of as prescriptive meta-data since it is prescribing the representation (which may change). Immutable DataSets have descriptive meta-data that explains what’s there. ...
Query Execution
Query Execution

... –Dates and times can be represented by the data types DATE and TIME respectively ƒ Table Declarations – Use the keywords CREATE TABLE followed by the R name and list of As and their types –e.g. create table MovieStar(name char(30), ...
PURE STORAGE AND TURBONOMIC
PURE STORAGE AND TURBONOMIC

... Getting the Most from Virtualization? The full value of virtualization can be lost due to unsolved and unanticipated problems relating to storage performance and availability. These issues can make the virtualization of business-critical applications a significant challenge. Flash-based storage helps ...
PDF Slides - IIT Guwahati
PDF Slides - IIT Guwahati

... • Many file systems, sometimes many within an  operating system, Each with its own format  – CD‐ROM is ISO 9660;  – Unix has UFS, FFS;   – Windows has FAT, FAT32, NTFS as well as  Floppy,  CD, DVD Blu‐ray,  – Linux has more than 40 types, with extended file  system ext2 and ext3 leading; plus distri ...
Overview File Systems and
Overview File Systems and

... systems and devices that hold the data. Different access methods reflect different file structures and different ways of accessing and processing the data. ...
CIFS Service Description
CIFS Service Description

... then she can have access to all the individual folders. However, John can be restricted to have access to cifs-john, and cifs-joe, whereas Joe can be set up to have access to cifs-joe and cifs-sam. 7. Oops! How to get that file back? CIFS keeps snap-shots of the data for 2 weeks. These snapshots are ...
Defeating Encrypted and Deniable File Systems
Defeating Encrypted and Deniable File Systems

... systems as hidden volumes. These hidden volumes are claimed to be deniable since, unless she reveals that second password to an adversary, it should be impossible for that adversary to determine whether Alice’s regular encrypted file system contains an encrypted hidden volume or not. We examine both ...
Defeating Encrypted and Deniable File Systems
Defeating Encrypted and Deniable File Systems

... modification time, volume type, and volume serial number of the file system on which the real files are stored [4]. Suppose Alice stores the file BadStuff.doc on a hidden volume, edits that document while on a plane, and then closes Word and unmounts the hidden volume before passing through customs. ...
Project Description Userspace Deduplication File System using FUSE
Project Description Userspace Deduplication File System using FUSE

... components. This layer includes the FUSE file system interface and will provide support for all of the required VFS API functions. There are generally three types of calls that can be made into this layer: data write operations, data read operations, and metadata operations. Your design should consi ...
Vembu BDR v2.1.1
Vembu BDR v2.1.1

... ● For disk image backup schedules, client's allotted space is not validated when the  transferred backup data exceeds.  ● Vembu BDR does not support VMware backup for ESXi free versions as VMware APIs  themselves do not support ESXi free versions.  ● In Mail level restore, item level recovery from t ...
Chapter 11 File System Implementation
Chapter 11 File System Implementation

... –A requested page and several subsequent pages are read and cached –These pages are likely to be requested soon ...
DANS: Preferred formats
DANS: Preferred formats

... Digital data are stored in file formats, which are often standard software formats. The software and file format selected will usually depend on the user’s primary purpose. To create a table, for instance, spreadsheet software will be used more often than a word processor. This is because data table ...
File systems in Windows
File systems in Windows

... physical hardware and any file systems must be separate from the I/O manager physical devices which hold file data e.g. disks, DVDs, pen drives, etc. will have device drivers that form part of the I/O system ...
PowerPoint **
PowerPoint **

... • File timestamp metadata facilitates automated processes such as backup and life cycle management. ...
Setting-up RAID Arrays for Windows Small Business Server (SBS)
Setting-up RAID Arrays for Windows Small Business Server (SBS)

... Adaptec RAID controllers offer a unique feature allowing arrays to be created from a portion of the disk (whatever size portion you want to use), called a “container”. They also allow more than one container to exist on each physical drive. Since a RAID array can be made up of small containers on di ...
Section 17 - Dist. File Sys
Section 17 - Dist. File Sys

... locality of reference in file accesses. Servers can be accessed only occasionally rather than for each access. 2. Caching causes data to be moved in a few big chunks rather than in many smaller pieces; this leads to considerable efficiency for the network. 3. Disk accesses can be better optimized on ...
Experiment 3.4 How to analyze the allocations of extents ? Table of
Experiment 3.4 How to analyze the allocations of extents ? Table of

... and uncompressed SQL scripts are located. Start SQL*Plus client in a way described in either Experiment 1.1 for XP operating system or in Experiment 1.2 for Linux operating system. You can use also SQL Developer described in Experiment 1.3. Connect as a user STUDENT with a password student .Execute ...
Storing Data: Disks and Files
Storing Data: Disks and Files

... • The size in bytes of the memory buffer InnoDB uses to cache data and indexes of its tables. The default value is 128MB (v 5.1-5.6, and in use on topcat). • On a dedicated database server, you may set this to up to 80% of the machine physical memory size. • But of course not larger than the DB data ...
File System in Win In a computer, a file system (sometimes written
File System in Win In a computer, a file system (sometimes written

... Windows 7. It provides numerous improvements over the FAT file system, including better security and better disk utilization. NTFS is a proprietary file system developed by Microsoft Corporation for its Windows line of operating systems, beginning with Windows NT 3.1 and Windows 2000, including Wind ...
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Disk formatting

Disk formatting is the process of preparing a data storage device such as a hard disk drive, solid-state drive, floppy disk or USB flash drive for initial use. In some cases, the formatting operation may also create one or more new file systems. The first part of the formatting process that performs basic medium preparation is often referred to as ""low-level formatting"". Partitioning is the common term for the second part of the process, making the data storage device visible to an operating system. The third part of the process, usually termed ""high-level formatting"" most often refers to the process of generating a new file system. In some operating systems all or parts of these three processes can be combined or repeated at different levels and the term ""format"" is understood to mean an operation in which a new disk medium is fully prepared to store files.As a general rule, formatting a disk leaves most if not all existing data on the disk medium; some or most of which might be recoverable with special tools. Special tools can remove user data by a single overwrite of all files and free space.
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