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Basic Storage Service Configuration Guide for File

OceanStor V3 Series V300R006

This document is applicable to OceanStor 2200 V3, 2600 V3, 5300 V3, 5500 V3, 5600 V3, 5800 V3, 6800 V3, 18500 V3, and 18800 V3. It describes the basic storage services and explains how to configure and manage them.
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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 old data is protected by snapshots, the space of the old data will not 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 (if the old data is protected by snapshots, the space of the old data will not be released).

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

Figure 1-5 Data writing process
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Updated: 2019-07-12

Document ID: EDOC1000138856

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