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FusionStorage 8.0.0 Block Storage Parts Replacement 04

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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 Service Disk Module

Replacing a Service Disk Module

As storage media, service disk modules are hot-swappable.

Impact on the System

When a service disk module is replaced, system performance is compromised. Therefore, replace a service disk module during off-peak hours.

Prerequisites

  • A spare disk module is ready. The capacity of the spare disk module is equal to or larger than that of the faulty disk module, and the type of the spare disk module is the same as that of the faulty disk module.
  • The faulty disk module has been located.
  • The storage pool to which the faulty disk module belongs is in the normal state, and no data reconstruction task is running.
NOTE:

For details about the slot numbers of service disk modules, see Slot Numbers.

Precautions

  • To prevent damaging disk modules or connectors, remove or install disk modules with even force.
  • When removing a disk module, first remove it from its connector. Wait at least 30 seconds and then remove the disk module completely from the chassis.
  • To prevent disk module damage, wait at least one minute between removal and insertion actions.
  • To avoid data loss, replace only the disk module whose fault indicator is yellow on.
  • To avoid system failures, do not reuse disk modules.
  • SSDs and HDDs (including NL-SAS, SAS, and SATA disks) cannot be preserved for a long time after being powered off.
    • SSDs with no data stored can be preserved for a maximum of 12 months while they are powered off. SSDs with data stored can be preserved for a maximum of three months while they are powered off. If the maximum preservation time is exceeded, data loss or SSD failures may occur.
    • Packed HDDs can be preserved for a maximum of six months. Unpacked HDDs that are powered off can also be preserved for a maximum of six months. If the maximum preservation time is exceeded, data loss or disk failures may occur.
    • The maximum preservation time is determined based on the disk preservation specifications provided by vendors. For details, see the manuals provided by the vendors.

Tools and Materials

  • ESD gloves
  • ESD wrist straps
  • ESD bags
  • Labels

Procedure

  1. Optional: If the faulty disk is an NVMe SSD, obtain its ESN as follows:

    1. Log in to DeviceManager, and choose Services > Block Service > Storage Pool.
    2. Click in the row where the desired storage pool resides, and select Disk Topology from the shortcut menu.
    3. Move the cursor to the faulty SSD. SN that is displayed is the ESN of the faulty SSD.

  2. Optional: If the faulty disk is an NVMe SSD, log in to the primary management node as user dsware and run the following command to logically power off the faulty NVMe SSD. To run this command, enter the name and password of CLI super administrator account admin as prompted:

    sh /opt/dsware/client/bin/dswareTool.sh --op poweroffNvmeDisk -ip Management IP address of the faulty node -slotNo Slot number of the faulty service disk module -esn ESN of the faulty service disk module

  3. Remove the disk module.

    Correctly record the slots where disk modules reside. Install disk modules into the same slots before and after the replacement. Otherwise, services may be affected.

    1. Press the button that secures the disk module ejector lever, as shown in step 1 in Figure 2-1.

      The ejector lever automatically ejects.

      Figure 2-1 Removing a disk module
    2. Hold the ejector lever, and pull out the disk module for approximately 3 cm, as shown in step 2 in Figure 2-1.
    3. Wait at least 30 seconds until the disk stops spinning, and slowly pull out the disk module, as shown in step 3 in Figure 2-1.

  4. Place the removed disk module in an ESD bag.
  5. Take the spare disk module out of its ESD bag.
  6. Install the disk module.

    Install disk modules into the same slots before and after the replacement. Otherwise, services may be affected.

    1. Raise the ejector lever and push the disk module in along the guide rails until it does not move, as shown in step 1 in Figure 2-2.
      Figure 2-2 Installing a disk module
    2. Ensure that the ejector lever is fastened to the beam, and lower the ejector lever to completely insert the disk module into the slot, as shown in step 2 in Figure 2-2.

  7. Check whether the disk module is successfully installed.

    Wait 3 minutes and then check the activity and fault indicators on the disk to determine whether the disk module is successfully installed.
    • If the activity indicator is steady on or blinking green and the fault indicator is off or blinking yellow, the installation is successful.
    • If the fault indicator is steady yellow, the installation fails. In this case, perform the following operations:
      • Check whether the disk module has been firmly inserted. If not, wait 1 minute and then reinsert it.
      • If the fault indicator is still steady yellow after you have reinserted the disk module, the spare disk module may be faulty. In this case, replace it with another one.
      • If the fault indicator is still steady yellow after the replacement, the link of the disk slot may be faulty. In this case, contact technical support engineers.

  8. Optional: If the faulty disk is an NVMe SSD and is not removed from the storage pool, obtain the ESN of the spare SSD 5 minutes after the replacement.

    1. Log in to DeviceManager, and choose Cluster > Hardware.
    2. Locate the faulty node based on the node IP address, and click to display the node details.
    3. Move the cursor to the corresponding slot. SN that is displayed is the ESN of the spare SSD.

  9. Optional: If the faulty disk has not been removed from its storage pool, run the following command to add the spare service disk module to the storage pool. To run this command, enter the name and password of CLI super administrator account admin as prompted:

    SAS or SATA disk:

    sh /opt/dsware/client/bin/dswareTool.sh --op forceReplaceSingleDisk -ignoreMediaFault true -id ID of the storage pool to which the faulty service disk module belongs -slot Slot number of the faulty service disk module -nodeMgrIp Management IP address of the faulty node

    NVMe SSD:

    sh /opt/dsware/client/bin/dswareTool.sh --op forceReplaceSSD -id ID of the storage pool to which the faulty SSD belongs -oldEsn ESN of the faulty SSD -newEsn ESN of the spare SSD -nodeMgrIp Management IP address of the faulty node -type main_storage -ignoreMediaFault true

  10. If the spare service disk module is not automatically added to the storage pool, perform the following operations to add it to the storage pool:

    1. Log in to DeviceManager, and choose Services > Block Service > Storage Pool.
    2. Click in the row where the desired storage pool resides, and select Disk Topology from the shortcut menu.
    3. Select the spare service disk module, and click Re-import. In the Confirm dialog box that is displayed, click OK.

  11. Check the system status.

    On SmartKit, choose Home > Storage > Routine Maintenance > More > Inspection and check the system status.
    • If all inspection items pass the inspection, the inspection is successful.
    • If some inspection items fail, the inspection fails. Rectify the faults by taking recommended actions in the inspection reports. Perform inspection again after fault rectification. If the inspection still fails, contact Huawei technical support.

    For details, see the FusionStorage Block Storage Administrator Guide.

Follow-up Procedure

Label the replaced service disk module to facilitate subsequent operations.

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Updated: 2019-09-19

Document ID: EDOC1100081420

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