While adding a disk to the vSAN disk group, it may report an error as below.
A general system error occurred: unable to make label on the partition table for device: naa.5000########
On the vCenter UI, the error would show as below.
VMware vSAN 7.x
VMware vSAN 8.x
The disk would failed to add to vSAN diskgroup when the disk is experiencing medium errors or I/O errors.
This can be verified using the vmkernel log on ESXI host on /var/run/log/vmkernel.log.
2025-07-07T05:54:19.666Z In(182) vmkernel: cpu12:2098857)ScsiDeviceIO: 4686: Cmd(0x45bc25000140) 0x9e, CmdSN 0xd65e from world 0 to dev "naa.########" failed H:0x0 D:0x2 P:0x0 Valid sense data: 0x3 0x31 0x0 Medium Error, LBA: 02025-07-07T05:54:19.666Z In(182) vmkernel: cpu12:2098857)ScsiDeviceIO: 4686: Cmd(0x45bc25000140) 0x25, CmdSN 0xd661 from world 0 to dev "naa.########" failed H:0x0 D:0x2 P:0x0 Valid sense data: 0x3 0x31 0x0 Medium Error, LBA: 02025-07-07T05:54:19.667Z Wa(180) vmkwarning: cpu2:2098416)WARNING: ScsiDeviceIO: 13044: READ CAPACITY on device "naa.########" from Plugin "HPP" failed. I/O error2025-07-07T05:54:19.667Z Wa(180) vmkwarning: cpu2:2098416)WARNING: StorageDevice: 9287: GetDeviceAttributes during periodic probe'naa.########': failed with I/O error
Upon checking the disk status on the ESXi, the disk capacity may show '0' MB.
naa.######## Direct-Access /vmfs/devices/disks/naa.######## 0MB HPP Local SEAGATE Disk (naa.########)
In order to resolve the issue, the drive errors should be resolved. It is recommended to work with hardware vendor to fix the drive errors.
Refer the instructions to Add a Capacity Device to vSAN Disk Group once the hardware issue is resolved and drive is healthy.