Replacing a System Disk Module (OceanStor Pacific 9150/OceanStor Pacific 9350/OceanStor Pacific 9550)

Impact on the System

• If RAID 1 has been configured for system disk modules, replacing one system disk module will not affect system running. If RAID 1 is not configured for the system disk modules, replacing one system disk module will cause system errors.
• Before replacing a system disk module on a node, you must power off the node. This affects the services running on the node.

Prerequisites

• The replacement system disk module (spare part) has been prepared.

• The faulty system disk module has been located.

Precautions

• Do not remove the two system disk modules on a device at the same time. Otherwise, the device will not work properly.
• To prevent system faults, do not replace system disk modules with ones that have been used before.
• To prevent replacement failures, ensure that replacement disk modules are free from obvious foreign objects, collision, and scratches.
• To prevent replacement failures, ensure that the disk slots are free from foreign objects or obvious damage before installing disk modules.
• To prevent system faults, use the BOM code of the faulty disk module to apply for a replacement disk module.
• To prevent damaging system disk modules or connectors, remove and install disk modules with even force.
• When replacing a system disk module, hold down the node power button. After the backup power data is flushed to disks and the node running indicator is off, remove the faulty node.
• After a system disk module on a device is replaced, data will be reconstructed on the replacement system disk module. Do not remove and insert the other system disk module on the device during data reconstruction. Otherwise, the device will not work properly.

During the replacement of system disk modules, complete the following operations within five minutes: Remove the node, remove and insert system disk modules, and install the node back into the system subrack. Otherwise, the heat dissipation of the storage device will be affected and the storage device will be powered off due to high temperature.

Tools and Materials

• Phillips screwdriver
• ESD gloves
• ESD wrist strap
• ESD bag
• Labels

Procedure

1. Remove the faulty node.
   

   The time from node removal to installation and restoration cannot exceed five minutes. Otherwise, the device will be powered off due to high temperature.

   Press the release button on the right of the node. Rotate the node lever to raise the lever. Hold the lever and slowly pull the node out of the system subrack. See (1) and (2) in Figure 1.

   Figure 1 Removing a node
   

2. Remove the riser card from the faulty node.
   Loosen the screws on the riser card and lift the riser card. See (1), (2), and (3) in Figure 2. The screw loosened in (1) is a captive screw. Move the riser card to completely expose the disk module.

   

   When moving a riser card, pay attention to the cables inside the node that connect to the riser card.

   Figure 2 Removing a riser card
   

3. Remove the faulty disk module.
   1. Loosen the screw on the air duct and lift the air duct. See (1) and (2) in Figure 3.
      Figure 3 Removing an air duct
      
   2. Press the latch that secures the disk module, tilt the disk module upwards by 20° to 30°, and remove the disk module. See (1) and (2) in Figure 4.
      Figure 4 Removing a disk module
      

4. Put the removed disk module into an ESD bag.
5. Take the replacement disk module out of its ESD bag.
6. Install the replacement disk module.
   1. Tilt the disk module by 20° to 30° and insert it into the slot.
   2. Press the latch of the disk module and the disk module at the same time until the disk module is secured by the latch. See (1) and (2) in Figure 5.
      Figure 5 Installing a disk module
      
   3. Place the air duct inside the node and tighten the screw on the air duct. See (1) and (2) in Figure 6.
      Figure 6 Installing an air duct
      

7. Install the riser card into the faulty node.
   

   When installing a riser card, ensure that the cables inside the node that connect to the riser card are securely connected.

   Put the riser card into the node, and tighten the screws to secure the riser card. See (1) and (2) in Figure 7.

   Figure 7 Installing a riser card
   

8. Install the faulty node.
   1. Raise the ejector lever of the node and push the node into the system subrack along the guide rails. See (1) and (2) in Figure 8.
      Figure 8 Installing a node (1)
      
   2. When the node cannot move forward anymore, rotate the ejector lever to reset it. Then press the lever until you hear a click to completely lock the node into the system subrack. See (1) and (2) in Figure 9.
      Figure 9 Installing a node (2)
      

9. Connect the node to peripheral devices according to the labels. Ensure that all cables are correctly connected. Press the power button of the node to power on the node.

Follow-up Procedure

After the system disk module is replaced, label it to facilitate subsequent operations.