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CH225 V3 Compute Node V100R001 User Guide 07

This document describes the appearance, functions, and structure of the CH225 V3 storage expansion compute node (CH225 V3 for short), and methods of installing, removing, and configuring the CH225 V3.
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Removing a Mezz Card

Removing a Mezz Card

This section describes the precautions and procedure for removing a Mezz card from a CH225 V3.

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 8-62 shows the numbering and positions of the Mezz cards.

Figure 8-62 Numbering and positions of Mezz cards

Prerequisites

Conditions

  • You have read 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 configuration section 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.
      • WWPN of the NIC. If the Windows operating system, you can use the management tool of the HBA card to query the WWPN. If the VMware ESXi is used, run the esxcli storage san fc list command to query the WWPN. If the Linux (SUSE Linux 10 for example) is used, run the cat /sys/class/fc_host**/port_name command to query the WWPN.
      • Bus information of the NIC. You can run the lspci command to query the bus information of the NIC. For details, see the MZxxx NIC User Guide.
  • The compute node cover is removed. For details, see Removing the Cover.

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. Determine the Mezz card to be removed.

    Figure 8-62 shows the numbering and positions of the Mezz cards.

  2. Use the Phillips screwdriver to loosen the two captive screws a and b for the upper mezzanine card, as shown in Figure 8-63.
  3. Pull the upper mezzanine card vertically upwards away from the connector on the mounting base. See step (1) in Figure 8-63.

    Figure 8-63 Removing the mezzanine cards

  4. Place the removed mezzanine card in an ESD bag.
  5. Use the Phillips screwdriver to loosen the two captive screws c and d for the lower mezzanine card, as shown in Figure 8-63.
  6. Pull the lower mezzanine card vertically upwards away from the connector on the mounting base. See step (2) in Figure 8-63.
  7. Place the removed mezzanine card in an ESD bag.
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Updated: 2019-07-10

Document ID: EDOC1000095351

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