Canon imageRUNNER ADVANCE C5255 Series Service Manual page 64

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Technology > Controller System > Controls > Removable HDD (option)
● Points to Note in Servicing concerning Mirroring Functionality
1. The modes other than Mirror Mode indicate troubles, which require swift recovery.
The power can be turned OFF even during Rebuild process. However, it is recommended
not to turn off the power and wait until the mode flows to Mirror Mode. In addition, HDD
removal after power-OFF is guaranteed only in Mirror Mode.
2. The mirroring board controls Master HDD and Backup HDD. This control is performed
based on the HDD serial number and the model serial number instead of slot locations.
If HDDs are replaced in a careless manner during servicing in the field, the Master and
Backup HDDs may be switched.
Ex) When the master HDD is in trouble, the mirroring board automatically recognizes
the backup HDD as the master. Thus, the master and backup HDDs are switched
even without changing the slot locations.
If the Master HDD cannot be located, turn OFF/ ON the power to check on which channel
the green LED is lit on the LED PCB.
The firstly-blinked LED (ChA or ChB) shows the Master HDD, which is accessed firstly after
power-on.
3. For users who intend to use the removable and mirroring functionality concurrently, instruct
them not to change the removable HDD location in advance.
Change of HDD locations after power-OFF is allowed as specifications only in Mirror Mode.
Otherwise, HDD removal or change of location is not guaranteed.
4. The following conditions are required to replace HDDs at power-ON.
• Removable HDD is extended
• Either HDD is in trouble
CAUTION:
Be sure to use a new HDD when replacing the HDD.
5. Upgrading should be done only in Mirror Mode while mirroring in ongoing. Upgrading in
Degrade or Rebuild mode is basically prohibited. Always prioritize Mirror Mode when you
take any actions.
2 Technology > Controller System > Controls > Removable HDD (option)
■ Removable HDD (option)
This option enables easier HDD mounting (slot-out/ in) at power-OFF (see *1). In addition, the
HDD slot can be locked.
Potential use case: To enhance information securities in government offices or enterprises
• Remove the HDD after business hours to store in a safe box.
• Mount the HDD before business hours. Lock the slot during operation.
*1: The following conditions are required to replace HDDs at power-ON.
• - Removable HDD is extended
• - Either HDD is in trouble
Removable HDD Kit-AC1
MEMO:
• To use this option, no setting is required with the software.
• The user needs to prepare a key because there is no key with this kit.
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