Panasonic WJ-HDE300/G User manual

Extension Unit
Instructions
Model No. WJ-HDE300/G
WJ-HDE
300
Extension Unit
Before attempting to connect or operate this product,
please read these instructions carefully and save this manual for future use.
The model number is abbreviated in some descriptions in this manual.

4
Contents
■Important Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
■General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
■Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
■Appearance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
●Front View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
●Rear View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
●Inside the Front Lid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
■Replacing/Mounting HDDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
●Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
■Mounting in a Rack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
●Unit Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
●How to Mount . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
■Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
●Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
■Setup Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
●Basic Setups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
●Replacement & Setup in the SINGLE mode . . . . . . . . . . . . . . . . . 19
●Changing Setups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
●Recovery of RAID5 Disk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
●Unit Number Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
■Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
■Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
■Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

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 environment
where a high temperature or high humidity exists. Use
the 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 220 V AC –
240 V AC 50 Hz.
• Avoid shock and vibration
Shock or vibration may damage the HDD.
The HDDs are fragile especially when the HDD motors
are revolving and the HDD POWER indicator lights. Be
sure to turn off either switch: the POWER switch on the
rear panel, or the HDD POWER switch inside the front
lid: before you mount the unit into a rack or dismount it.
Do not move the HDD for 30 seconds after turning off
the power.
• Pay attention to static electricity
Put your hand on a metallic surface to discharge static
electricity before installation.
Do not touch components mounted on the HDD directly
with your hand.
Hold only the two sides of the HDD when installing.
■General
The extension unit WJ-HDE300 can accommodate up to four hard disk drives per unit to add available disk space to the digital
disk recorder WJ-HD316A/WJ-HD309A series. Up to seven extension units can be connected to a digital disk recorder. The
units 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 extension
unit - 1) The actual space may be several percent lower than the logical space.
Even when the total capacity of HDD mounted on each extension unit is more than 2 TB, the capacity that is actually avail-
able will be 2 TB or less.
* Important
When set to RAID level 5, the digital disk recorder will not access the HDD preinstalled in it, but will access only the HDDs
in 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 following
cases.
• The appliance is moved to a place significantly dif-
ferent in temperature or humidity.
• The appliance is moved out from an air-conditioned
room.
• The appliance is placed in an extremely humid
place.
• The appliance is placed in a room where a heater
has just been turned on.
• Consumable parts
Contact your dealer about replacement when the time
comes.
A hard disk drive needs replacing after a certain length
(depends on the model) of operation.
Cooling fans also need replacing after around
20 000 - 30 000 hours of operation.
• Do not block the ventilation opening or slots on the
cover.
To prevent the appliance from overheating, place it at
least 5 cm (2 inches) away from the wall.
• Avoid placing the unit on an inclined surface.
Otherwise, malfunction or damage to the disk may
occur. Place the unit in a horizontal position.

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■Appearance
●Front View
qError indicator [ERROR]
Lights when an error occurs. Refer to Troubleshooting
for details.
Red: System error
Orange: Thermal error or malfunction of the cooling fan.
wHDD power indicator [HDD POWER]
ON: Indicates that the HDDs are powered.
OFF: Indicates that the HDDs are not powered.
Notes:
• Do not move or shock the unit while this indicator is
lit. Otherwise, the HDDs will be damaged.
• This indicator will light and go out by the setting of
the HDD POWER switch inside the front lid of the
unit, or by the operation on the HDD SAFETY MENU
of the digital disk recorder.
eOperate indicator [OPERATE]
Lights green when turning on the power switch on the
rear panel.
rHDD access indicators [HDD 1] [HDD 2] [HDD 3]
[HDD 4]
Each indicator lights to indicate the status of the
respective HDD.
Green: Indicates that the respective HDD is running
normally.
Red: Indicates that the respective HDD is the first faulty
drive among the HDDs in the unit.
Red blink: Indicates that the respective HDD is the
second or subsequent faulty drive among the HDDs
in the unit.
Orange-red alternate blink/Orange: Indicates that the
respective drive is currently being recovered in
RAID level 5 mode.
These indicators normally show the status of the
respective drive, but they work as a set when a system
error occurs. Refer to Troubleshooting for further infor-
mation.
Important
When one of the indicators lights red, replace the
respective HDD immediately. If two or more indicators
light/blink red, it will be impossible to recover data.
There may be cases where it is eventually impossible to
recover data if two drives are coincidentally damaged
or the second drive fails during the data recovery
process.
tFront cover
Detach the front cover when it is necessary to install
HDDs or to operate the switches inside the unit.
ERROR
HDD 1 HDD 2 HDD 3 HDD 4
HDD
POWER
OPERATE
Extension Unit
WJ-HDE
qwe r t

7
POWER
AC IN
SIGNAL GND
12
IN OUT
EXT
yu i io
!0
!1
!2
●Rear View
ySerial in connector [IN]
Connect the WJ-HD300 series digital disk recorder or
other extension unit with the supplied serial cable.
uSerial out connector [OUT1] [OUT2]
Connect another extension unit with the supplied serial
cable.
iCooling fan
oSignal GND terminal [SIGNAL GND]
Connect this terminal if required, to the SIGNAL GND
terminal of other equipment to avoid a possible ground-
ing loop and noise.
!0 Power switch [POWER]
Turn on the power of the unit with this switch before
turning on the power of the digital disk recorder, or turn
them on simultaneously. Otherwise, the HDDs will not
be mounted.
When turning off the power of the unit with this switch,
turn off the power of the digital disk recorder first, and
then turn off the power of this unit after confirming that
all HDD access indicators are not lit or blinking.
!1 AC inlet [AC IN]
Connect the supplied power cord.
!2 Cable clamp

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■Specifications
Required power: 220 V AC - 240 V AC 50 Hz
Power consumption: 85 W (including 4 HDDs when installed)
Interface: 2-wire serial, 480 Mbps logical speed
Operating temperature: +5 °C to +45 °C (41 °F to 113 °F)
Operating humidity: Less than 85 %
Dimensions: 420 mm (W) x 88 mm (H) x 350 mm (D), rubber feet exclusive
19-9/16" (W) x 3-7/16" (H) x 13-13/16" (D)
Weight: 7.2 kg(16 lbs) (not including hard disk drives)
Weight and dimensions indicated are approximate.
Specifications are subject to change without notice.
■Accessories
Operating instructions (this document)....................... 1 pc.
The following are for installation.
Power cord ................................................................. 1 pc.
Serial cable ................................................................. 1 pc.
Rack mounting bracket .............................................. 2 pcs.
Bracket fixing screw ................................................... 4 pcs.
HDD fixing screw ...................................................... 16 pcs.
Damper ..................................................................... 16 pcs.
Sleeve ....................................................................... 16 pcs.