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OceanStor 2600 V3 Video Surveillance Edition V300R006 Basic Storage Service Configuration Guide for File

This document is applicable to OceanStor OceanStor 2600 V3 Video Surveillance Edition. This document describes the basic storage services and explains how to configure and manage basic storage services for storage system.
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File System Data Writing Process

File System Data Writing Process

The redirect-on-write (ROW) technology is used to write data into files in the following two scenarios:

  • If the size of the data to be written is an integral multiple of the file system block size, the data will be written to a new location and the space of the old data will be released.
  • If the size of the data to be written is not an integral multiple of the file system block size, the old data will be read and then written to a new location with the new data, and the space of old data will be released.

The ROW technology is used to save data to a new location, enabling quick data writes.

Figure 1-3 Data writing process
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Updated: 2019-07-12

Document ID: EDOC1100021203

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