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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 Service Disk Module

Replacing a Service Disk Module

This section explains how to replace a service disk module (disk module for short) for the P36/C36.

Impact on the System

Replacing a member disk of a RAID group affects the system.

Prerequisites

  • The new disk module is ready. The type of the replacement disk and faulty disk are same. The capacity of the replacement disk module is equal to or larger than that of the faulty disk module.
  • The faulty disk module is located. Figure 8-1 and Figure 8-2 show the service disk module slot number.
    Figure 8-1  Disk slots on the front panel of a P36 and C36

    Figure 8-2  Disk slots on the rear panel of a P36 and C36

Precaution

  • To avoid damaging the disk module or connector, use even force and take caution when removing or installing a disk module.
  • When removing a disk module, disconnect the connector first and wait for 30 seconds before removing it from the chassis.
  • When removing and inserting a disk module, ensure that the interval is longer than one minute, that is, after the disk module is removed, wait at least one minute before inserting the disk module into the slot, or after the disk module is inserted, wait at least one minute before removing the disk module from the slot. In this way, the disk module will not be damaged.
  • To avoid data loss, only replace the disk module whose disk alarm/location indicator is steady red.
  • To prevent system failure, do not change a used hard drive into the node.
  • Restricted by the storage principles, SSDs and mechanical disks such as NL-SAS, SAS and SATA disks cannot be preserved for a long term while they are powered off.
    • SSDs where no data is stored can be preserved for a maximum of 12 months while they are powered off. SSDs where data has been stored can be preserved for a maximum of 3 months while they are powered off. If the maximum preservation time is exceeded, data loss or SSD failure may occur.
    • Packed mechanical disks can be preserved for a maximum of six months. Unpacked mechanical disks that are powered off can be preserved for a maximum of six months too. If the maximum preservation time is exceeded, data loss or disk failure may occur.
    • The maximum preservation time is determined based on the disk preservation specifications provided by the mechanical disk vendor. For details about the specifications, see the manual provided by the vendor.
  • You can replace a faulty large-capacity SSD with a small-capacity SSD only in slot 0. In other conditions, do not replace a faulty large-capacity disk with a small-capacity disk of the same type. Otherwise, the system will prevent the disk from running.

Tools and Materials

  • ESD gloves
  • ESD wrist strap
  • ESD package
  • Labels

Procedure

  1. Wear the ESD wrist strap or gloves. For details, see Wearing an ESD Wrist Strap in Replacing a Main Control Board Enclosure.
  2. As shown in step 1 in Figure 8-3, press the button to eject the disk handle.
  3. As shown in step 2 in Figure 8-3, move the handle outward.
  4. As shown in step 3 in Figure 8-3 pull out the disk module slowly after 30 seconds.

    Figure 8-3  Removing a disk module

  5. Put the removed disk module in an ESD bag.
  6. Take the disk module to be installed out of the ESD bag.
  7. As shown in step 1 in Figure 8-4, insert the disk module into the slot.

    NOTE:

    Move the ejectors outward completely; otherwise, the disk module cannot be completely plugged in.

  8. As shown in step 2 in Figure 8-4, move the handle inward.

    Figure 8-4  Installing a disk module

  9. After you have installed a disk module, wait for three minutes and then check the disk alarm/location indicator and disk running indicator to see whether the disk module is successfully installed.

    • If the disk running indicator is steady or blinking green, and the disk alarm/location indicator is off, the installation is successful.
    • Three reasons may cause the disk alarm/location indicator to turn red:
      • The disk module is not firmly inserted in the slot. Plug it out and insert it in the slot again. Remove the disk module by referring to 2 to 4. Wait for one minute and reinsert the disk module.
      • If the disk alarm/location indicator is still red after the disk module is removed and reinserted, the disk module may be faulty. You need to replace the disk module with another new one.
      • If the disk alarm/location indicator is still red after the replacement, the link of the slot may be faulty. contact the technical support engineers of your vendor.

  10. Check and upgrade disk firmware.
    1. Log in to the CLI. For details, see Logging In to the CLI in OceanStor 9000 V5 Command Reference.
    2. Run show disk general to check whether the firmware of the replaced disk needs to be upgraded. If any record shows that the value of DiskNeedUpg is YES, the firmware needs to be upgraded.

      • If yes, record nodeID and location in the command output where the value of DiskNeedUpg is YES.
      • If no, the disk firmware does not need to be upgraded.

    3. Log in to DeviceManager. At the lower right of the home page, click Task Management and check whether any data reconstruction tasks are incomplete.

      • If yes, check the data reconstruction progress and wait until the data reconstruction tasks are complete.
      • If no, go to 10.d.

    4. On the CLI, run upgrade disk node_id slot_id to upgrade the disk firmware.

      node_id and slot_id are the values of nodeID and location recorded in 10.b. The upgrade takes approximately 3 minutes. Once the upgrade is complete, a data reconstruction task is generated automatically. If you are going to upgrade other disks, wait until this data reconstruction task is complete.

    5. Repeat 10.a to 10.d to upgrade all disk firmware that needs to be upgraded.

Follow-up Procedure

After replacing the disk module, label the removed disk module for subsequent handling.

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Updated: 2019-07-25

Document ID: EDOC1100067965

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