Mirror Reconstruction

Troubleshooting

for HDL-GXW series

Manual Top

Mirroring Rebuilding

This product can provide mirroring function between an built-in hard disk and an eSATA hard disk. When trouble occurs with any of these hard disks or inconsistency of data recorded on these hard disks occurs, the following alarms will activate when this product is booted up and boot up of this product will terminate.

>The [STATUS] LED (red) and the [eSATA] LED (orange) flash.
>The Buzzer continues to sound: "Beep, Beep, Beep (short, long, short)".

This section describes how to address this problem and the procedure to rebuilding mirroring.

With the mirroring function, all information not only data but also system and setup information of this product is mirrored. Even if problem occurs in one of the two system files, it is possible to start up using the other system file.

Since the mirroring function of this product constructs mirroring by centering on the start up disk, you will need to first select which disk to start up from before setting up mirroring.

Set up the IP address of the computer to "192.168.0.xxx". (xxx is a value within the range of 1-254 excluding 200)
(Set [Subnet mask] to "255.255.255.0")

Should inconsistency occur in mirroring as the case mentioned above, this product will boot up with a fixed IP address of "192.168.0.200" regardless of the setup condition. (In this state this product detects the inconsistency of mirroring, but cannot determine which hard disk, the built-in or eSATA, should be used for booting up.)

Since this product needs to be set up, you will need to temporarily change the IP address of the computer.
Keep a record of the values of the [IP address], [Subnet mask] and [Default gateway] that were previously set.
These will be restored to their original values later.

Open "192.167.0.200" from a browser on the computer.

http://192.168.0.200/


		In this state this product cannot be detected from the utility [Magical Finder] provided. Consequently, you will not be able to open the setup screen from [Magical Finder]. Always open the setup screen from the browser.

Start-up disk selection screen is displayed. Confirm the final update time of each disk and information you have written down as a record, and select the start-up disk.
*	The system content of each disk will be the one from the last update.


		Start up system from the selected hard disk. Immediately after start-up, the system will operate with the selected hard disk alone. (This is a disk that will later serve as the source of mirroring.) After start-up, the rebuilding of mirroring is completed by starting and re-constructing mirroring.


		Wrong selection. After booting of this product has completed (after the [STATUS] LED comes on), press the POWER button to turn off the power supply of this product, then re-boot this product.

If you selected an "built-in hard disk" as the start-up disk, Startup the system from built-in harddisk.
If you selected an eSATA hard disk as start-up disk, start up the system from an eSATA hard disk.

In this case, this product will only operate with the start-up disk (selected hard disk) and does not use unselected disk.

Screen displayed when "System boot from built-in HDD" is selected.

Screen displayed when "System boot from eSATA HDD1" is selected.

When this product is booted, the [STATUS] LED will illuminate green.


		The IP address after booting up is one that stored on the selected disk.

Restore the IP address of the computer to the original value.
(Restore to the value reordered in step-1)

Once booting up has completed, open the setup screen.

See [How to open setup screen]

Confirm that the system was started up from the selected disk.

Click [HDD Information] in the[Information Display] menu shown on the left.

Confirm that the selected disk in system start-up is indicated as "Normal".
(Unselected disk is indicated [Unconnected].)

Screen displayed when "System boot from built-in HDD" is selected.

Screen displayed when "System boot from eSATA HDD1" is selected.


		The start-up hard disk is the source of mirroring. When constructing mirroring, the disk indicated as "Normal" becomes the source of mirroring and the disk indicated as "Unconnected" becomes the destination of mirroring.

Click [Steup].

Set up mirroring.

Click [Disk]-[Mirroring] in the [Setup] shown on the left.

Click the [Mirroring starts] button.

Screen displayed when "System boot from eSATA HDD1" is selected.
(The eSATA HDD1 is the source of mirroring, and the built-in HDD is the destination of mirroring.)


		Rebuilding of mirroring takes about 1 to 2 hours depending on disk capacity and usage condition of this product during processing. Make sure that data protection by mirroring is not activated during the rebuilding process.


		Once mirroring is started, the content of the destination disk will be overwritten with the content of the source disk. Beware that as a result of this the content of the destination disk will be lost.

If mirroring is not started, The [Start-up disk selection] screen will be displayed when power supply is turned back on.
In this case, start mirroring between the built-in hard disk and the eSATA hard disk or turn off the power supply and remove the eSATA hard disk from this product.

The mirroring environment is rebuilded with these procedures.

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