Replacing Disks in HyperScale X Nodes

If a Commvault HyperScale X node fails due to a problem with a disk, you can replace the failed disk with a new, empty disk. Ransomware protection is available in the new disk.

Tip

To physically identify the failed drive, look for the drive with a lit drive light. When a disk fails, its drive light is automatically lit.

Before You Begin

Caution

Before you proceed with the disk replacement, verify that the serial number of the disk matches with the serial number that appears in the IPMI console for the disk.
You should not replace a disk when the node is powered down. Node must be powered on and CVFS services (hedvigswatch, hedvighblock) must be running during the disk replacement.
The disk should be set to JBOD (not RAID). This is usually automatic but might need to be set in some cases .

In normal failure scenarios, the LED on a failed disk will light up during the failure and turn off once the replacement is completed. If the hardware does not recognize the disk, run the following commands:

Identify and turn on the drive light on the disk using the following steps. (Steps (a) and ( b) are listed for confirmation purposes only and does not activate the LED light.)
1. Determine the physical slot for the disk
  
  # '/usr/local/hedvig/scripts/spm/disk-helper.py --device sd[X] list_slot'
2. Identify the serial number of the disk.
  
  # '/usr/local/hedvig/scripts/spm/disk-helper.py --device sd[X] show_serial'
3. Turn on the drive light to locate the disk.
  
  # '/usr/local/hedvig/scripts/spm/disk-helper.py --device sd[X] led_on'
4. To turn off the drive light, run the following command:
  
  # '/usr/local/hedvig/scripts/spm/disk-helper.py --device sd[X] led_off'
Enable root access, if root access is disabled in the storage pool. For more information, see Enabling or Disabling Root Access.

Procedure

Caution

You must replace the disk using the Command Center, as shown in the following steps. Attempting to manually replace a disk might make the disk ineligible for replacement.

From the navigation, click Storage > HyperScale.

The HyperScale page appears.
In the Name column, click the <storage pool> that has the disk that you want to replace.

The <storage pool> page appears.
On the Nodes tab, click Column Settings () and then click Columns > Actions.

The Actions column will be displayed.
In the node that has the disk that needs to be replaced, click the Actions button , and then click Replace drives.

The Confirm replace dialog box is displayed.
Verify the MediaAgent name and make sure that it is associated with the node that has the disk that needs to be replaced, and then click Yes.

Note

Make sure to replace drives one node at a time. After replacing the drives on a node, wait for the HBlock service to come online before proceeding with another node.

Result

The new disk appears with the Online status.
Enable root access, if root access is disabled in the storage pool. For more information, see Enabling or Disabling Root Access.