Yacht Devices YDVR-03, Руководство пользователя

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V. Organization of Files on the Card
To store files, the Recorder creates folders named “YDVRdddd” in the root directory,
where dddd is the serial number of the folder from 0001 to 9999. In the folder,
the Recorder creates files named “ddddnnnn.DAT”, where dddd is the folder
number where the file is stored, and nnnn is the file sequence number in the folder,
from 0001 to 0300.
The Recorder tries not to store more than 100 files in a single folder, and never stores
more than 300 files together. The Recorder never creates more than 500 folders at one
time. The exact number of folders used and the maximum number of files in a folder
depends on the size of the card. The Recorder cannot fully utilize the available space
on memory cards larger than 200 GB. When cards of this size become commonly used,
we will test them with the Recorder and release updated firmware to support them.
If the number of the last file in the folder exceeds the maximum number of files in
a folder for this card, the Recorder creates a new folder with the next serial number.
The Recorder erases the folder with the lowest serial number and its contents, if:
• the number of folders created by the Recorder has reached the maximum value
for the card;
• the free space available on the card is not enough for 20 Recorder files.
After completing data collection in a folder named YDVR9999, the Recorder renames
all folders on the card, giving them new numbers starting with 1. The files inside
the folder are not renamed.
In this way, you do not have to worry about the amount of space left on the card,