Symantec Corporation

Veritas Technologies LLC

Meher Shah

Raghupathi Malige

Gautham Ravi

Daniel Fillingham

Brad Boyer

Ryan Lefevre

Tillmann Reusse

Various systems and methods for inhibiting a modified block of data from being written to an underlying persistent storage device are disclosed. A cache is maintained by a file system and the cache is implemented to temporarily cache portions of application data for an application. The application data for the application is stored on the underlying persistent storage device. Metadata is accessed if it is detected that a block of data in the cache has been modified. The metadata indicates that the block of data is not needed for the integrity of the application. In response to the metadata, the modified block of data is inhibited from being written to the underlying persistent storage device.

Caching temporary data in solid state storage devices

In general, a block of data in a data file is stored in a multi-tier storage system. The block of data includes multiple rows and multiple entry values per row, including values for a particular entry. The values of the particular entry in the data block can be used to determine whether to move the data block to a different tier of a multi-tier storage system. The block of data can then either be relocated in a different tier or kept in the current tier.

Determining whether to relocate data to a different tier in a multi-tier storage system

A computer-implemented method for compressing database objects may include 1) identifying a database object within a relational database, 2) determining that the database object meets a compression criterion that is not met by at least one additional database object within the relational database, 3) identifying a location of the database object within a database file of the relational database, and 4) compressing a portion of the database file at the location of the database object without compressing all of the database file. Various other methods, systems, and computer-readable media are also disclosed.

Systems and methods for compressing database objects

A sliding window policy is implemented to manage database objects. At a first time, a first portion of a database object is allocated to a first tier of a multi-tier storage system. The first portion corresponds to a first specified percentage of the size of the database object at the first time and is selected according to information associated with the database object. The remaining portion of the database object at the first time is allocated to one or more other tiers. At a second (later) time, a second portion of the database object is allocated to the first tier. The second portion corresponds to a second specified percentage of the size of the database object at the second time and is also selected according to information associated with the database object. The remaining portion of the database object at the second time is allocated to the other tier(s).

Policy for storing data objects in a multi-tier storage system

A system and method for implementing clustered network file system lock management is provided. A failure of a first server node among a collection of nodes is detected. The first server node includes lock status data. The lock status data grants a first client exclusive access to data stored on a server storage device. The server storage device is coupled to the collection of server nodes. The lock status data is transferred to a second server node among the collection of server nodes. The first client is granted exclusive access to data stored on the server storage device, based on the lock status data transferred to the second server node from the first server node, in response to the transferring. Lock requests from the collection of clients are accepted, in response to the transferring.

Growing community of inventors

Newark, CA, United States of America

Meher Shah