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Replication of the archive data refers to Archive data replication is the copying of fixed-size blocks of information (video, audio, metadata) from one archive to another within the same domain. The primary purpose of data replication is to ensure long-term storage and access to multimedia data on remote storage devices. Any archive can act as a source and the receiver of data. Every archive can be both the sender and receiver of data. 

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1. In the list of archives of the domain, select the archive to which you want to copy data from other archives.

2. Select one or more archives from which you want to copy data. You can also replicate video from the embedded camera storage (see Embedded storage).
   Image Modified

   In the Replication period parameter, select the replication period:

3. Always—replication is performed continuously. 

4. Set the replication parameters specified in the table:

   Parameter	Value	Description
   Archive replication
   Replication mode		Select the value for the replication period from the drop-down list

5. Time schedule—replication is performed within the specified time schedule (see Creating schedules). For example, to distribute the CPU load, you can configure replication to run at night.
On demand—replication is started manually or using macros (see Manual archive replication, Start replication).

Note title Attention! If you change the replication period in

an

the existing replication archive, the archive recordings for the previous period are deleted. If you use an object archive,

it is possible to

you can record data and replicate it to the same archive at a time if you select the On demand replication period. For example, in the case of continuous recording and a short-term (for example,

five

5 minutes) loss of connection with the camera, you can use a macro to replicate the data from the embedded storage to the same archive to which the continuous recording is made.
	Always	The value is set by default.

Replication is performed constantly
On demand	You can start replication manually or use macros (see Manual archive replication, Start replication)
Frame skipping, fps	No	The default value is No. Select the required value from the drop-down list
	By key frames
	1 per 240 seconds
	1 per 120 seconds
	1 per 60 seconds
	1 per 30 seconds
	1 per 20 seconds
	1 FPS (MJPEG only)
	2 FPS (MJPEG only)
	3 FPS (MJPEG only)
	4 FPS (MJPEG only)
	5 FPS (MJPEG only)
	6 FPS (MJPEG only)
	7 FPS (MJPEG only)
	8 FPS (MJPEG only)
	9 FPS (MJPEG only)
	10 FPS (MJPEG only)
	11 FPS (MJPEG only)
	12 FPS (MJPEG only)
	13 FPS (MJPEG only)
	14 FPS (MJPEG only)
	15 FPS (MJPEG only)
	16 FPS (MJPEG only)
	17 FPS (MJPEG only)
	18 FPS (MJPEG only)
	19 FPS (MJPEG only)
	20 FPS (MJPEG only)
	21 FPS (MJPEG only)
	22 FPS (MJPEG only)
	23 FPS (MJPEG only)
	24 FPS (MJPEG only)
	25 FPS (MJPEG only)
	26 FPS (MJPEG only)
	27 FPS (MJPEG only)
	28 FPS (MJPEG only)
	29 FPS (MJPEG only)
	30 FPS (MJPEG only)
Cameras for replication		Select the required cameras for each archive whose data you want to copy

In the Cameras for replication parameter, for each archive, select cameras from which data are copied

to the replication archive. To select all cameras, click the Select all button

.

Info title Note

Data from a particular camera can be copied

You can copy the camera data to the replication archive only from one archive.

When

If you select a camera for replication from

an

any archive,

the

this camera becomes unavailable for replication from

any

all other

archive

archives. You cannot select cameras if they are already recording to the selected replication archive.

6. Click the the Apply Image Modified button. To cancel an action, click the Image Added button.

Configuring data replication is complete. If the replication period is set to Always, data replication starts immediately after the settings are applied.

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