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OceanStor 9000 V100R001C30 Parts Replacement 14

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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 Disk Module

Replacing a Disk Module

This section explains how to replace a disk module of the C72.

Impact on the System

During the replacement of a disk module, system performance is reduced. Therefore, you are advised to replace a disk module during off-peak hours.

Prerequisites

  • A replacement fan module is ready.
  • The capacity of the replacement disk module is equal to or larger than that of the faulty disk module. In addition, the other parameters of these two disk modules are the same.
  • Huawei-certified disk modules that match the product model are used as spare parts. Otherwise, services may be adversely affected.
  • The disk module that you want to replace has been located. Figure 5-1 shows the service disk module slot number.
    Figure 5-1  Disk slots of a C72

    NOTE:

    C7 (a cascading module), E7 (a cascading module) and D7 (a reserved vacant slot).

Precaution

  • To prevent damage to a disk module, slowly pull out the enclosure from or slide the enclosure into the cabinet.
  • Use care when you remove and insert a disk module to avoid any damage to the appearance or connectors of the disk module.
  • To prevent data loss, replace only the disk module whose status indicator is steady red.
  • During the replacement of a disk module, ensure that the duration for which the enclosure stays in pull-out state is shorter than five minutes.
  • Wait at least 15 minutes before pulling out the enclosure again.
  • Pull out only one enclosure of the C72 at a time.
  • If the over-temperature alarm indicator of the C72 is on, immediately slide the enclosure into the cabinet regardless of whether the replacement is complete. Otherwise, services may be affected.
  • 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.

Tools and Materials

  • ESD wrist strap
  • ESD bag
  • Labels

Procedure

  1. Wear an ESD wrist strap.
  2. Loosen the two screws on the front panel and slowly pull out the enclosure, as shown in Figure 5-2.

    Figure 5-2  Pulling out an enclosure

  3. Press the latch on the disk module and pull out the disk module, as shown in Figure 5-3.

    Figure 5-3  Removing a disk module

  4. Place the removed disk module into an ESD bag.
  5. Take the replacement disk module out of its ESD bag.
  6. Fully open the handle of the replacement disk module, insert the module into the empty slot, and close the handle, as shown in Figure 5-4.

    Figure 5-4  Installing a disk module

  7. Wait about 2 minutes and check the status indicator on the disk module to determine whether the disk module is successfully installed. Figure 5-5 shows the location of the status indicator.

    • If the indicator is steady green, the disk module is successfully installed.
    • If the indicator is steady red or off, the newly installed disk module is faulty, the slot that houses the disk module is faulty, or the disk module is incorrectly installed.
    Figure 5-5  Status indicator on a disk module

  8. Slowly slide the enclosure into the cabinet and fasten the two screws on the front panel, as shown in Figure 5-6.

    Figure 5-6  Sliding an enclosure into the cabinet

  9. Check and upgrade disk firmware.
    1. Log in to the CLI. For details, see Logging In to the CLI in OceanStor 9000 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 9.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 9.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 9.a to 9.d to upgrade all disk firmware that needs to be upgraded.

Follow-up Procedure

After replacing the disk module, label it to facilitate subsequent operations.

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Updated: 2018-10-27

Document ID: EDOC1000075654

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