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user3073309
Asked: 2024-05-04 13:46:38 +0800 CST

esxi virtual machine ’s storage usage exceed 30% than it was allocated

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We allocated 0.2 + 10.98 T but the storage usage shows it use 14T why？

2 disks are both “Thin provisioned”

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vmware-esxi

1 Answers

  1. Best Answer
    • Thin-provisioned vmdks may grow up to their maximum size when written to. They're just not fully grown from the start. Deleting data does not usually shrink a vmdk.
    • Each snapshot might grow up to the provisioned size of the VM, doubling, trippling, etc the required potential amount of storage.
    • Full-state snapshots also include the VM's memory.

    To reclaim space from snapshots, remove and consolidate them. To reclaim space from deleted guest files in a thin-provisioned vmdk, you need to either

    • make sure empty disk space is zeroed - writing zeros to empty blocks grows a vmdk to provisioned size though - and then use vmkfstools to release the zeroed space (Details)
    • use a storage and guest OS that supports releasing guest-deleted space via unmap (Details)
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