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Chapter 4
Feature Setup
1 GB of the storage capacity on an SD or MicroSD card is reserved for system use and is not
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available to store recordings.
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When you put an SD or MicroSD card in the IP camera for the first time, the card is formatted
automatically if the card does not have the ext2 file system and if the directory structure that is
required for recording is not present on the card. A card with a storage capacity of 32 GB can take
up to 15 minutes to format.
If you move an SD or MicroSD card from one IP camera to another, the IP camera to which you
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moved the card does not format the card automatically. This feature allows you to manually recover
any video that is stored on the card by downloading the video from the IP camera user interface. You
must format the card before you enable recording for it in the new IP camera.
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If you are not using the IP camera with Cisco VSM, set the system time and time zone from the IP
camera user interface before you enable recording to an SD or MicroSD card. If you are using the
IP camera with Cisco VSM, enable recording through the Cisco VSM user interface, which
synchronizes the camera time with the NTP server. Changing the system time after recording starts
can cause issues.
The continuous recording feature enables VSM to "auto-merge" video archive that has gaps due to
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network or other issues (assuming that camera was not affected), using camera storage as a
temporary archiving medium. It also enables archiving only video that is close to generated events.
Either the primary stream or secondary stream can recorded in this mode.
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Grooming starts when continuous recording is enabled and operates as follows:
1.
2.
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An IP camera has limited bandwidth for simultaneous reading from and writing to an SD or
MicroSD card, which can affect the amount of data that you can copy from the card when recording
to the card is enabled. For optimum performance of the IP camera, set the maximum bit rate for the
recorded stream to 6 Mbps or lower. At higher bit rates, video may not be copied from the card
before the video is groomed.
Recording MJPEG streams to an SD or MicroSD card is not recommended because the relatively
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high bit rate of these streams can affect system performance. If you do record MJPEG streams, Cisco
recommends that you stop recording before you use the IP camera user interface to copy MJPEG
recordings from the card.
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The system allows one active download of video from an SD card or MicroSD card at a time. If VSM
is copying data from a card (due to a user or system initiated copy operation), you cannot initiate
another download from the IP camera user interface until the VSM download completes. Similarly,
if you are using the IP camera user interface to download video from a SD or MicroSD card, video
cannot be downloaded from VSM until this download completes.
To display the Local Storage window, perform the following steps:
Procedure
From the IP camera user interface, click the Setup link.
Step 1
Click Feature Setup to expand the menu.
Step 2
From the Feature Setup menu, click Local Storage.
Step 3
OL-32285-01
Groom files that are marked as deleted.
Groom the oldest files on the local SD or MicroSD card when available space on the card is less
than 1 GB.
Cisco Video Surveillance 3000 Series IP Camera Configuration Guide
Local Storage
4-27
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