Setting the mode of this unit

HDD operation mode

This unit has 2 HDD operation modes as described below.

Spanning mode

This mode regards and uses 2 built-in HDDs as 1 HDD. The total data capacity of 2 HDDs is available.

Notice

•When either of the HDDs fails in the spanning mode, both of the HDDs become unusable and the recorded data are deleted.

Mirroring mode

This mode records the same data to 2 built-in HDDs simultaneously.

Even when either of the HDDs fails, by replacing the failed HDD, the data stored in the other HDD are automatically copied to the newly mounted HDD and the HDDs are restored to the condition before the failure. (Data synchronization)

Synchronization of 500-GB data takes about 8 hours. This time is approximate and given as a guide only, assuming that this unit performs no other operations during the data synchronization. Therefore, a longer time is required for the data synchronization when the unit is in the playback or recording mode.

When the data synchronization is interrupted by the operation such as power-off, the unit resumes the synchronization after the power is restored.

Notice

•When you replace the failed HDD in the mirroring mode, make sure to use an unused HDD. If you mount a used HDD, delete the management information of that HDD. (See “How to set the mode” on the right column.) If you mount a used HDD without deleting its management information, the data synchronization may not be performed correctly. (Do not delete the management information with the existing normal HDD mounted because the data is deleted.)

Mode selection

Step 1 Turn OFF the MAIN switch on the rear of this unit.

Step 2 Remove the cover of this unit according to the steps 1 to 3 of “Removing the HDD” on page 14.

•The mode is set using the MODE rotary switch inside the cover.

＜Inside the front cover＞

MODE rotary switch

Step 3 Set the MODE rotary switch to 7.

•Before you change the HDD operation mode, delete the management information according to steps 3 to 5. You may skip these steps when you mount an unused HDD. When you mount a used HDD, the HDD cannot be used properly unless the management information is deleted before changing the HDD operation mode.

Step 4 Press the RESET button.

Step 5 After the unit boots up and the buzzer sounds, press the TEST button.

•The management information deletion function is activated and the ACCESS indicator starts blinking. Upon completion of the deletion, the indicator illuminates green.

Step 6 Set the MODE rotary switch to the number corresponding to the desired operation mode.

MODE	HDD operation
rotary switch	mode

0	Do not use.
1	Spanning
2	Mirroring
3	Do not use.
4	Do not use.
5	Do not use.
6	Do not use.
7	Do not use.
8	Do not use.
9	Do not use.