The purpose of Vmware Thin Disk
If I understand when you create VM with Thin disk you allocate a disk size , for instance 40GB.
I have read that the actual size of the disk is based on the size of the Data written to disk on demand up to the size of 40GB that has been allocated.
If the VM will never use the Whole 40GB , let 's say it will use 15 GB, then the rest of the space (25GB) will never be used by other VMs, since its already allocated.. ?
OR I misunderstood the concept of Thin Disk
Probably, the 40GB is the limit that the Thin Disk can use..and in the mean time if other VMs use all the space on the Datastore where that VM (that has thin disk) on, then the VM will not get to 40GB of usage..since the space could have been used by other VMs ?
any clarification ?
Thank you
I have read that the actual size of the disk is based on the size of the Data written to disk on demand up to the size of 40GB that has been allocated.
If the VM will never use the Whole 40GB , let 's say it will use 15 GB, then the rest of the space (25GB) will never be used by other VMs, since its already allocated.. ?
OR I misunderstood the concept of Thin Disk
Probably, the 40GB is the limit that the Thin Disk can use..and in the mean time if other VMs use all the space on the Datastore where that VM (that has thin disk) on, then the VM will not get to 40GB of usage..since the space could have been used by other VMs ?
any clarification ?
Thank you
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Yes. The 40 GB is used for overall calculation of over-provisioning (which is reasonable to a certain extend, depending on the requirements), but is not "reserved" in any way.
ASKER
Means other VMs can use space of the VM that has Thin Disk, if it has not been used yet by the VM, and other VMs need that space........Correct ?
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https:#a41856049 should be pretty clear about that.
ASKER
Thank you for you explanation Guys
No problems, just be careful if you use them, and manage and document them correctly, and keep an eye in and use reporting tools.
Overprovision is a big problem when using Thin disks, also some applications do not support them, e.g. Exchange.
Overprovision is a big problem when using Thin disks, also some applications do not support them, e.g. Exchange.
ASKER
well if the Vm has used 15gb out of 40GB, and all other VMs in the same datastore run out of space and need more.
Will they be able to use the 25GB left from not being used by the VM you created ?