Note that the VMFS does not stripe across LUNs when more
than one LUN is allocated to a given VMFS volume.
–VMFS Best Practices Guide
The hosts try to put distance between themselves on the datastore to reduce any contention for resources, but they still try to keep the objects that they manage close together.
–VMFS Extents – Are they bad, or simply misunderstood?
From the ESXi command line
/ipmitool chassis power diag
Remotely using ipmitool
ipmitool -I lanplus -H -U -P chassis power diag run
You can also trigger a PSOD on ESXi by running
vsish -e set /reliability/crashMe/Panic 1
The following partitions are created on the boot disk of ESXi.
||Alternate Boot Bank
||Coredump. Not used since ESXi 5.5. It exists for backward compatibility
||Coredump. Introduced in ESXi 5.5, required for hosts with huge RAM
||Store. Used for storing VMware tools etc..
||Scratch. Persistent storage for log files, not created on USB and SD card installation
||VMFS, local datastore. Not created on USB and SD card installation
Get partition table of the disk where ESXi is installed:
esxcli storage core device partition list
partedUtil getptbl /vmfs/devices/disks/ESXi_install_disk
The size of a partition is (End Sector – Start Secore) * 512 bytes.
Check active coredump partition:
esxcli system coredump partition list
Get a list of mounted filesystems. The boot partition and coredump partitions will not be mounted.