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OceanStor 9000 V5 7.0 Parts Replacement 05

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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Replacing a System Disk Module

Replacing a System Disk Module

This section explains how to replace a system disk module for a P12.

Impact on the System

Two system disks form a RAID 1 group. If one system disk is damaged, the system will not be affected. If both systems disks are damaged, the system will break down.

Prerequisites

  • The replacement system disk module is ready.
  • The faulty system disk module has been located.

Precaution

  • Do not remove the two system disk modules at the same time. Otherwise, the P12 cannot work correctly.
  • After a system disk module is replaced, data on the new system disk module will be reconstructed. Do not remove and insert the other system disk module within 4 hours. Otherwise, the P12 cannot work correctly.
  • To prevent damaging system disk modules or connectors, remove or install system disk modules with even force.
  • When you remove a system disk module, first remove it from the port. Wait at least 30 seconds and remove the system disk module completely from the main control board enclosure.
  • To prevent a system disk module from damage, wait at least 1 minute after removal and before reinserting a system disk module, or after insertion and before removing a system disk module.
  • To prevent data loss, replace the located faulty disk only and do not remove or insert other disks unless necessary.
  • To prevent system failure, do not change a used hard drive into the node.

Tools and Materials

  • ESD gloves
  • ESD wrist strap
  • ESD bag
  • Labels

Procedure

  1. Wear the ESD wrist strap and ESD gloves. For details, see Put on an ESD wrist strap in Replacing a Main Control Board Enclosure.
  2. Press the latch on the handle to eject the handle of the system disk module, as shown in step 1 and step 2 in Figure 6-4.
  3. Wait at least 30 seconds and slowly remove the system disk module from the chassis, as shown in step 3 in Figure 6-4.

    Figure 6-4  Removing a system disk module

  4. Put the removed system disk module into an ESD bag.
  5. Take the replacement system disk module out of its ESD bag.
  6. Insert the system disk module into the empty slot, as shown in step 1 in Figure 6-5.

    NOTE:

    Before inserting a system disk module, stretch the handle of the system disk module to the maximum angle. Otherwise, the system disk module may fail to be fully inserted into the slot.

  7. Close the handle, as shown in step 2 in Figure 6-5.

    Figure 6-5  Installing a system disk module

  8. After inserting a system disk module, wait 3 minutes, and then check the disk module alarm/location indicator to determine whether the system disk module has been successfully installed.

    • If the system disk running indicator is steady on or blinking green, and the system disk alarm/location indicator is off, the installation is successful.
    • The possible causes of a red-on disk module alarm/location indicator are:
      • The system disk module is not firmly inserted. Remove and reinsert the system disk module. Refer to 2 to 8 to remove the system disk module. Wait 1 minute and install the system disk module again.
      • If the disk module alarm/location indicator is still steady red after you have reinserted the system disk module, the replacement system disk module may be faulty. Replace the system disk module with another one.
      • If the disk module alarm/location indicator is still steady red after the replacement, the link of the system disk module slot may be broken. In that case, contact the technical support engineers.

Follow-up Procedure

Use the KVM to log in to the operating system and run cat /proc/mpt2sas/mpt2sas0-luns to check the system disk RAID status. After a while the status is going to change to active, it means the system disk RAID synchronizing is complete. It will take about 4 hours to complete the synchronizing at most.

node1:~ # cat /proc/mpt2sas/mpt2sas0-luns
LUN_ID Vol_State
0      active

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

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Updated: 2019-07-25

Document ID: EDOC1100067965

Views: 13171

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