■RAID 5 Function of the Extension Unit

Summary of the RAID 5 function (Redundant Arrays for Independent Disks, independent data disks with distributed parity blocks)

It is possible to use the RAID 5 function with an optional extension unit.

RAID level 5 regards 3 or more drives as one drive, and it is possible to read data by attaching error correction data even though one of the drives is broken automatically. (It is impossible to read data if 2 or more drives are broken.)

RAID level 5 requires a minimum of 3 drives to implement. When using the RAID function, logical disk size of the extension unit will be as below.

Logical disk size = Smallest size of the disk among the disks in the extension unit x (Number of the disks in the extension unit - 1)

Important:

•When connecting two extension units or more with this unit, it is impossible to connect the extension unit with the RAID 5 function and the one without the RAID 5 function at the same time.

•When the RAID 5 function is used, it is impossible to use two hard disks in this unit. The recorded pictures in those disks will not be deleted.

●Setup/cancel the RAID 5 function

Do the following to set or cancel the RAID 5 function with an optional extension unit.

Refer to the operating instruction of the extension unit for further information.

z Make sure that the power of this unit and all of the extension units to be connected are OFF.

xTo set the RAID 5 function, set the mode switch of the extension unit to "RAID 5".

To cancel the RAID 5 function, set the mode switch of the extension unit to "SINGLE".

cMake sure that the HDD POWER switch of the extension unit is "ON".

vTurn the power of the extension unit on.

bTurn the power of this unit on.

→The "HDD DISK MENU" will be displayed automati- cally after the system check when the hard disk configuration has been changed such as when an extension unit is newly connected.

Important:

•When the RAID 5 function is set or canceled, all data on each hard disk of the extension unit will be deleted.

•When turning the power on, turn the power of the exten- sion unit first, and then turn the power of this unit on. Otherwise, the extension unit may not work correctly.

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Panasonic WJ-HD309 manual 131, RAID 5 Function of the Extension Unit, Setup/cancel the RAID 5 function
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WJ-HD309 specifications

The Panasonic WJ-HD309 is a formidable Digital Video Recorder (DVR) designed to cater to the needs of sophisticated surveillance systems. This device stands out for its impressive array of features and robust functionality, making it ideal for applications in various sectors including retail, transportation, and public safety.

One of the main features of the WJ-HD309 is its capacity to record high-quality video at resolutions up to 4CIF. This level of detail ensures that users can easily identify subjects, read license plates, and monitor critical activities with clarity. The DVR also supports multiple video input formats, offering flexibility in terms of camera compatibility.

In terms of storage, the WJ-HD309 is equipped with a large internal hard drive, enabling extensive video storage without sacrificing performance. Users can benefit from adjustable recording modes, including continuous, scheduled, and event-triggered recording. This versatility allows organizations to optimize their storage usage according to their specific needs.

The DVR’s advanced motion detection technology plays a crucial role in minimizing false alerts and focusing on relevant events. This feature enhances the efficiency of surveillance operations by ensuring that recorded footage is both meaningful and actionable. Additionally, the WJ-HD309 provides various monitoring modes, allowing for real-time viewing through either a local display or remote access via networked devices.

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Overall, the Panasonic WJ-HD309 is a powerful DVR that combines high-definition recording, flexible storage options, advanced motion detection, and convenient connectivity. Its technical specifications and feature set make it a preferred choice for organizations looking for reliable and effective security solutions. With the WJ-HD309, users are well-equipped to enhance their surveillance operations and respond effectively to security challenges.
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