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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 a Hard Disk

Removing a Hard Disk

You need to remove a hard disk before replacing it with a new one.

Scenarios

Remove a hard disk in any of the following scenarios:

  • The hard disk is faulty.
  • The hard disk needs to be replaced with a newer model.
  • The hard disk has no free space.
NOTE:
  • For details about how to erase data from a hard disk, see Erasing Storage Media Data.
  • Before removing a hard disk, check the following:
    • If no OS is installed on the hard disk, the compute node does not need to be powered off.
    • If an OS is installed on the hard disk, and the hard disk is configured in a RAID with redundancy, the compute node does not need to be powered off.
    • If an OS is installed on the hard disk, and the hard disk is not configured in a RAID or is configured in a RAID without redundancy (for example, RAID 0), the compute node needs to be powered off.

The CH222 supports a maximum of 15 hard disks. Figure 5-1 shows the hard disk installation positions and numbers.

Figure 5-1 Hard disk installation positions and numbers

Prerequisites

Conditions

You have determined whether data backup is required.

  • If the hard disk to be removed is not configured in a RAID or is configured in a RAID without redundancy (for example, RAID 0), you have need to back up data on the hard disk.
  • If the hard disk to be removed is configured in a RAID with redundancy, you can remove the hard disk without data backup.

Data

  • Ensure the CH222 position in the rack, chassis, and slot.
  • Ensure installation position of the hard disk in the CH222. For details about the installation position, see Appearance.

Locate the hard disk to be removed based on the preceding information, and label it to prevent misoperations.

Tools

  • Electrostatic discharge (ESD) gloves.
  • Packing materials, for example, an ESD bag.

Procedure

  1. Observe the indicator on the hard disk to be removed and ensure that the hard disk is not synchronizing data with another hard disk.

    If the hard is synchronizing data with another hard disk, wait until synchronization is complete. For details about indicators, see Indicators.

  2. Press the release button on the hard disk drawer panel. See step (1) in Figure 5-2.

    Figure 5-2 Pulling out the hard disk drawer

  3. Hold the hard disk drawer ejector lever and pull the hard disk drawer out of the chassis horizontally. See step (2) in Figure 5-2.

    The pulled out disk expansion drawer affects heat dissipation of hard disks. Insert the disk expansion drawer to the chassis within 5 minutes. Otherwise, hard disks will be overheated, which may result in hard disk failures and data loss.

  4. Push the release button that fastens the hard disk ejector lever. See step (1) in Figure 5-3.

    The ejector lever automatically ejects.

    Figure 5-3 Removing the hard disk

  5. Fully open the ejector lever. See step (2) in Figure 5-3.
  6. Hold the ejector lever of the hard disk, and pull out the hard disk for about 3 cm (1.18 in.). Wait for at least 30s until the hard disk stops working. Remove the hard disk from the slot. See step (3) in Figure 5-3.
  7. Place the removed hard disk in an ESD bag.
  8. (Optional) Install a filler module in the hard disk slot if you do not want to install a hard disk immediately.
  9. Insert the hard disk drawer into the chassis slot horizontally. See step (1) in Figure 5-4.

    Figure 5-4 Inserting into the hard disk drawer

  10. Lower the ejector lever until it snaps into the spring. See step (2) in Figure 5-4.
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Updated: 2019-08-16

Document ID: EDOC1000018075

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