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CH222 Compute Node V100R001 User Guide 18

This document describes the appearance, functions, structure, and installation, removal, and configuration methods of the CH222 compute node.
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Removing the Mezz Modules

Removing the Mezz Modules

You need to remove mezzanine cards before replacing them with new ones.

Scenarios

Remove mezzanine cards in any of the following scenarios:

  • The mezzanine cards fail.
  • The mezzanine cards need to be replaced with a new model.

Figure 5-76 shows the mezz module installation position on the CH222.

Figure 5-76 Mezz module installation position

Prerequisites

Conditions

  • Refer to Safety Instructions.
  • You have recorded the mezzanine card configuration.
    NOTE:
    • If the mezzanine card model is the same as the original one (MZ220, MZ510, MZ512, MZ910, or MZ912), and stateless computing configuration is enabled, you do not need to record the mezzanine card configuration.
    • If stateless computing configuration is disabled, record the following before removing the mezzanine cards.
      • BIOS configuration, including the UMC (MZ510 or MZ512), PXE (MZ510, MZ512, or MZ910), SR-IOV (MZ510 or MZ512), SAN Boot, iSCSI Boot (MZ510 or MZ512), and iBFT (MZ910). For details about how to query the information, see the BIOS upgrade section in the configuration chapter in the MZxxx NIC User Guide.
      • OS configuration, including IP addresses, VLAN IDs, and NIC bonding configuration.

        Query IP addresses as follows: For Windows, check the NIC properties. For VMware, log in, press ALT+F2, and perform query on the configuration screen. For Linux, run the ifconfig -a command.

        For details about how to query VLAN IDs and NIC bonding configuration, see the MZxxx NIC User Guide.

      • Switch configuration (such as the VLAN configuration of Ethernet switches and zoning configuration of FC switches). For details about the query method, see the switch configuration guide.
      • LUN configuration of the FC disk array. For details about the query method, see the FC disk array configuration guide.
      • NIC port numbers. Query method: For Windows, check the Network and Sharing Center. For VMware, run the esxcli network nic list command. For Linux, run the ifconfig -a command.

Data

Data preparation is not required for this operation.

Tools

  • Electrostatic discharge (ESD) gloves.
  • M3 Phillips screwdriver.
  • Packing materials, for example, ESD bag.

Procedure

  1. Use the Phillips screwdriver to loosen the two captive screws a and b for the upper mezzanine card, as shown in Figure 5-77.
  2. Pull the upper mezzanine card vertically upwards away from the connector on the mounting base. See step (1) in Figure 5-77.

    Figure 5-77 Removing the mezzanine cards

  3. Place the removed mezzanine card in an ESD bag.
  4. Use the Phillips screwdriver to loosen the two captive screws c and d for the lower mezzanine card, as shown in Figure 5-77.
  5. Pull the lower mezzanine card vertically upwards away from the connector on the mounting base. See step (2) in Figure 5-77.
  6. Place the removed mezzanine card in an ESD bag.
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Updated: 2019-08-16

Document ID: EDOC1000018075

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