Panasonic WJ-HDE300 Instruction Manual

Also see for WJHDE300 - DIGITAL DISK RECORDER: Manual Operating instructions Specifications Instructions Service manual

Contents

Panasonic WJ-HDE300 Instruction Manual Manual pdf 5 page image

5■ Precautions• Do not operate the appliance beyond its specified tem-perature, humidity or power source ratings.Do not use the appliance in an extreme environmentwhere a high temperature or high humidity exists. Usethe appliance at temperatures within +5 °C to +45 °C(41 °F to 113 °F) and humidity below 85 %.The input power source for this appliance is 120 V AC60 Hz.• Avoid shock and vibrationShock or vibration may damage the HDD.The HDDs are fragile especially when the HDD motorsare revolving and the HDD POWER indicator lights. Besure to turn off either switch: the POWER switch on therear panel, or the HDD POWER switch inside the frontlid: before you mount the unit into a rack or dismount it.Do not move the HDD for 30 seconds after turning offthe power.• Pay attention to static electricityPut your hand on a metallic surface to discharge staticelectricity before installation.Do not touch components mounted on the HDD directlywith your hand.Hold only the two sides of the HDD when installing.■ GeneralThe extension unit WJ-HDE300 can accommodate up to four hard disk drives per unit to add available disk space to the digitaldisk recorder WJ-HD316A/WJ-HD309A series. Up to seven extension units can be connected to a digital disk recorder. Theunits can be operated in RAID level 5* mode for high tolerance to disk error.* RAID level 5 (Redundant Arrays for Independent Disks, independent data disks with distributed parity blocks)RAID level 5 regards 3 or more drives as one drive, and it is possible to read data by automatically attaching error correc-tion data even though one of the drives is broken. (It is impossible to read data if 2 or more drives are broken.)RAID level 5 requires a minimum of 3 drives per unit.When using the RAID function, the 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 extensionunit - 1) The actual space may be several percent lower than the logical space.* ImportantWhen set to RAID level 5, the digital disk recorder will not access the HDD preinstalled in it, but will access only the HDDsin the extension unit.• Avoid condensation on the surface of the HDD.If this happens, do not turn on the power of the appli-ance and leave the appliance for around 2 hours.Wait until the dew evaporates in any of the followingcases.• The appliance is moved to a place significantly dif-ferent in temperature or humidity.• The appliance is moved out from an air-conditionedroom.• The appliance is placed in an extremely humidplace.• The appliance is placed in a room where a heaterhas just been turned on.• Consumable partsContact your dealer about replacement when the timecomes.A hard disk drive needs replacing after a certain length(depends on the model) of operation.Cooling fans also need replacing after around20 000 - 30 000 hours of operation.• Do not block the ventilation opening or slots on thecover.To prevent the appliance from overheating, place it atleast 5 cm (2 inches) away from the wall.• Avoid placing the unit on an inclined surface.Otherwise, malfunction or damage to the disk mayoccur. Place the unit in a horizontal position.