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115 results about "Disk partitioning" patented technology

Disk partitioning or disk slicing is the creation of one or more regions on secondary storage, so that each region can be managed separately. These regions are called partitions. It is typically the first step of preparing a newly installed disk, before any file system is created. The disk stores the information about the partitions' locations and sizes in an area known as the partition table that the operating system reads before any other part of the disk. Each partition then appears to the operating system as a distinct "logical" disk that uses part of the actual disk. System administrators use a program called a partition editor to create, resize, delete, and manipulate the partitions.. Partitioning allows the use of different filesystems to be installed for different kinds of files. Separating user data from system data can prevent the system partition from becoming full and rendering the system unusable. Partitioning can also make backing up easier. A disadvantage is that it can be difficult to properly size partitions resulting in having one partition with much free space and another nearly totally allocated.

Method and system for protecting data associated with a replaced image file during a re-provisioning event

The present invention discloses a method and hard disk configuration for protecting data associated with a first image file in an appliance server after the first image file has been replaced with a second image file. In a first aspect, the method of the invention includes partitioning a hard disk of the appliance server into a plurality of partitions, wherein at least one of the plurality of partitions is a hidden partition and copying the data associated with the first image file to the hidden partition, wherein the data in the hidden partition is invisible to a network operating system during normal server operation. In another aspect, the hard disk of the invention includes a first partition for storing an image file, wherein the first partition stores one image file at one time, a second partition for storing data associated with the image file, wherein the second partition is visible to a network operating system in the first partition, a hidden partition, wherein the hidden partition is invisible to the network operating system in the first partition, means for replacing a first image file in the first partition with a second image file, and means for copying the data associated with the first image file from the second partition to the hidden partition when the first image file in the first partition is replaced with the second image file.
Owner:IBM CORP

Method and device for encrypting hard disk partition

The invention relates to the field of computers and discloses a method and device for encrypting a hard disk partition. The method and the device are used for preventing data leakage of a hard disk and increasing data safety of the hard disk. The method comprises the following steps: when a starting process of an operation system on a user terminal is triggered, after being subjected to USBKEY authentication, an encryption key can be guided into the operation system to be stored temporarily according to a pre-set safety transmission mechanism; after obtaining the encryption key, the user terminal takes an appointed hard disk partition as an encryption partition to mount; and read-write operation of the encryption partition is encrypted and decrypted according to the obtained encryption key, therefore, data dynamic read-write encryption and decryption are realized in a driving layer; by means of driving of an independent file system, hook hijacking of the original file system of the operation system by a third party is stopped, so that the data safety is effectively increased; furthermore, mounting of the encryption partition and seamless integration of the starting process of the operation system are realized, and the execution efficiency of a hard disk encryption process is increased.
Owner:LIAOYUAN HUANYU JIAXUN COMM TECH

Internal storage log file system and achieving method thereof

The invention discloses an internal storage log file system based on an EXT 4 file system. The internal storage log file system is characterized by comprising an internal storage log area establishing module, a log file refreshing module and a log area write-back module, wherein the internal storage log area establishing module is used for establishing an internal storage log area for mapping an internal storage log area of a hard disk partition EXT4 file system log area in the internal storage. The log file refreshing module is used for reading a log area file in a hard disk partition into the internal storage log area when the hard disk partition is mounted, and the log file refreshing module is used for writing the internal storage log area as the log area file into a hard disk when the hard disk partition is dismounted. The log area write-back module is used for writing the internal storage log area for mapping a hard disk partition EXT4 file system into the other hard disk partition log area after the hard disk partition is dismounted. The power consumption of the hard disk is reduced by reducing the access times of the hard disk, and meanwhile due to the fact that the speed of the internal storage is far higher than that of the hard disk, the performance of the whole can be improved through the internal storage log system.
Owner:SUZHOU INST FOR ADVANCED STUDY USTC

Turbine disk partitioning reliability analysis method based on size effect modification

The invention relates to a turbine disk partitioning reliability analysis method based on size effect modification. The method includes the steps of firstly, simplifying a turbine disk model, analyzing the sensitivity to obtain the key geometrical size of a turbine disk, measuring the key geometrical size of the turbine disk to obtain a corresponding probability distribution feature; secondly, obtaining the material attributes of the turbine disk, and establishing a SWT probability cyclic stress-strain relation model and a strain-life model of the turbine disk; thirdly, conducting geometricalparameterization modeling on the turbine disk, analyzing finite elements, dividing areas according to the stress level and temperature distribution conditions of the turbine disk, conducting Latin hypercube sampling on the established SWT probability cyclic stress-strain relation model and the probability strain-life model to obtain the relation between random input variables and output service lives of all divided areas of the turbine disk and establish response face models, and sampling the response face models of all the divided areas through a Monte-Carlo sampling method to obtain the corresponding service life distribution and finally obtain the fatigue life and reliability of the turbine disk; fourthly, conducting size effect modification on the service life distribution of the turbine disk.
Owner:BEIHANG UNIV
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