MANAGING STRUCTURED DATA IN A DATA STORAGE SYSTEM
First Claim
1. A data storage system configured to generate secondary copies of database data, comprising:
- a client computing system comprising computer hardware and having a database application executing thereon configured to generate structured database data corresponding to one or more files and which is stored on one or more storage devices in a primary storage subsystem, wherein the database application organizes the database data as a plurality of first data units having a first level of granularity; and
one or more secondary storage controller computers including computing hardware configured to copy data to one or more secondary storage devices in a secondary storage subsystem,the client computing system configured to;
map the stored database data into a plurality of second data units having a second level of granularity larger than the first data units;
store a mapping of the second data units to the first data units;
monitor writes to the database data by the database application;
identify, based on the monitoring, of the writes changed first data units of the first data units which have changed as a result of the writes;
use the mapping to identify changed second data units of the second data units which each include at least one of the changed first data units;
maintain a table listing the changed second data units; and
in response to instructions to create a secondary copy of the database data;
consult the table to identify the changed second data units; and
forward the changed second data units to the one or more secondary storage controller computers.
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Accused Products
Abstract
According to certain aspects, a client computing system can be configured to map stored database data into a plurality of second data units having a second level of granularity larger than first data units; store a mapping of the second data units to the first data units; monitor writes to the database data by the database application; identify of the writes changed first data units of the first data units which have changed as a result of the writes; use the mapping to identify changed second data units of the second data units which each include at least one of the changed first data units; maintain a table listing the changed second data units; and in response to instructions to create a secondary copy of the database data, consult the table to identify the changed second data units, and forward the changed second data units to secondary storage controller computer(s).
82 Citations
20 Claims
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1. A data storage system configured to generate secondary copies of database data, comprising:
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a client computing system comprising computer hardware and having a database application executing thereon configured to generate structured database data corresponding to one or more files and which is stored on one or more storage devices in a primary storage subsystem, wherein the database application organizes the database data as a plurality of first data units having a first level of granularity; and one or more secondary storage controller computers including computing hardware configured to copy data to one or more secondary storage devices in a secondary storage subsystem, the client computing system configured to; map the stored database data into a plurality of second data units having a second level of granularity larger than the first data units; store a mapping of the second data units to the first data units; monitor writes to the database data by the database application; identify, based on the monitoring, of the writes changed first data units of the first data units which have changed as a result of the writes; use the mapping to identify changed second data units of the second data units which each include at least one of the changed first data units; maintain a table listing the changed second data units; and in response to instructions to create a secondary copy of the database data; consult the table to identify the changed second data units; and forward the changed second data units to the one or more secondary storage controller computers. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of managing database data in an information management system, the method comprising:
using a client computing system comprising computer hardware and having a database application executing thereon configured to generate database data corresponding to one or more files and which is stored on one or more storage devices in a primary storage subsystem, wherein the database application organizes the database data as a plurality of first data units having a first level of granularity; mapping the stored database data into a plurality of second data units having a second level of granularity larger than the first data units; storing a mapping of the second data units to the first data units; monitoring writes to the database data by the database application; identifying, based on said monitoring, changed first data units of the first data units which have changed as a result of the writes; using the mapping to identify changed second data units of the second data units which each include at least one of the changed first data units; maintaining a table listing the changed second data units; and in response to instructions to create a secondary copy of the database data; consulting the table to identify the changed second data units; and forwarding the changed second data units to one or more secondary storage controller computers which are configured to copy the changed second data units to one or more secondary storage devices in a secondary storage subsystem. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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20. An information management system, comprising:
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a computing system comprising computer hardware and having a application executing thereon configured to generate structured data corresponding to one or more files and which is stored on one or more storage devices in a primary storage subsystem, wherein the application organizes the structured data as a plurality of first data units having a first level of granularity; and the computing system further configured to; map the stored structured data into a plurality of second data units having a second level of granularity larger than the first data units; monitor writes to the structured data by the application; based on the monitoring of the writes, generate a table listing changed second data units of the second data units that include data changed by the identified writes; and in response to instructions to create a secondary copy of the structured data; identify the changed second data units using the table; and forward the changed second data units to one or more secondary storage controller computers.
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Specification