VMware

vSphere NVMe Memory Tiering

Available in vSphere 8.0 Update 3.

Advanced System Settings

Key	Value	default	Summary
Mem.TierNvmePct	100	25	NVMe size for memory tiering (in percentage of DRAM)
VMkernel.Boot.memoryTiering	true	false	Enable Memory Tiering

Reboot

esxcli system tierdevice list
esxcli system tierdevice create -d <the_nvme_disk>
esxcli system tierdevice create -d /vmfs/devices/disks/t10.NVMe____SAMSUNG_MZVLB256HBHQ2D000L7______________3759D60181382500

View usage

memstats -r vmtier-stats --unit mb --cSelect name:memSize:active:tier0Consumed:tier1Consumed

# "Pretty" vm names
esxcli --formatter csv vm process list | awk -F ',' '{print $2,$5}' > /tmp/vms
memstats -r vmtier-stats -u mb -s name:memSize:active:tier0Consumed:tier1Consumed | sed "$(while read -r name id; do echo "s/vm.$id/$name/g"; done < /tmp/vms)"

Snapshots without vCenter

# List all VMs
# Usage: snapshot.get vmid
vim-cmd vmsvc/getallvms

# Get VMid by VM name
vim-cmd vmsvc/getallvms | grep VmName | awk '{print $1}'

# Take snapshot
# Usage: snapshot.create vmid [snapshotName] [snapshotDescription] [includeMemory] [quiesced]
vim-cmd vmsvc/snapshot.create 2 SnapshotName "some description" 0 1

# List snapshots for vmid 2
vim-cmd vmsvc/snapshot.get 2
vim-cmd vmsvc/get.snapshotinfo 2

# Get snapshot id by snapshot name
vim-cmd vmsvc/get.snapshotinfo 2 | grep -C2 "SnapshotName" | grep id | grep -o '[0-9]\+'
vim-cmd vmsvc/snapshot.get 2 | grep -A1 "SnapshotName" | grep "Snapshot Id" | grep -o '[0-9]\+'

# Remove snaphot
# Usage: snapshot.remove vmid snapshotId [removeChildren]
vim-cmd vmsvc/snapshot.remove 2 11