Boot Disk Identification Failure and Restore Behavior
This section outlines the behavior and implications of a restore operation on Nutanix AHV when the boot disk cannot be identified and the virtual machine (VM) has more than six disks.
When initiating a restore under the above conditions, the system performs a Pre-Recovery Check and issues the following warning:
Warning:
The boot disk could not be identified from the backup image. The total number of disks exceeds the Nutanix AHV limit of six supported SATA drives. As a result, the restore operation will be only partially successful. The restored virtual machine will boot successfully if the boot disk is among the first six disks.
This warning indicates a potential risk to VM bootability due to the inability to determine the boot disk and the SATA disk limit. Nutanix AHV supports only six SATA disks per VM. Disks beyond this limit are restored as SCSI, which may not support booting.
NetBackup displays error message:
EC_BOOT_DISK_NOT_IDENTIFIED /*8866*/ "The boot disk could not be identified from the backup image."
If the restore operation proceeds despite the warnings:
Disk restoration strategy
First six disks are restored as SATA
Remaining disks are restored as SCSI
Restore jobs status: Marked as Partial Successful.
Note:
Boot disk beyond the first six disks: The VM fails to boot and the restore operation is considered as a failure, even though the partial data restoration occurred.
Manual reconfiguration or disk reordering may be necessary to recover the VMs.
Pre-restore validations: Ensure boot disk identification See Prerequisites. before proceeding with restore operations.
Disk reordering: If possible, reorder disks to place the boot disk within the first six position.
Note:
Manual reconfiguration or disk reordering may be necessary to recover the VMs and check the boot disk identification prerequisites.