Term
| Define Virtual Disk Thin Provisioning |
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Definition
| ESXi will provision disks that are logically larger than the physical space initially committed. This is performed disk-by-disk with the VMs |
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Term
| Define Array Thin Provisioning |
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Definition
| Allows you to create a LUN on your array with a logical size that initially differs from the physical space allocated—can expand up to logical size over time |
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Term
| T/F: Array thin provisioning is ESXi Aware |
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Definition
| False: ESXi will not be aware of thin provisioned LUNs unless the array is VAAI capable |
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Term
| Without vSphere APIs, what will a 2TB LUN that is thin provisioned but only contains 1TB data report to vSphere ? |
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Definition
| It will report as being 2TB in size |
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Term
| What capabilities does VAAI introduce for monitoring thin provisioned LUNs? |
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Definition
| Ability to monitor the use of space on the thin provisioned LUN as well as inform the array of datastore space that has been freed up when files are deleted or moved in order for the array to claim the newly available blocks |
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Term
| What type of provisioning have you used if you have thick disks on the VM level but your array is thin provisioned |
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Definition
| The net result is like having a thin provisioned disk |
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Term
| What is the use case for using Array Thin Provisioning |
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Definition
If Array Thin Provisioning is supported by the right APIs for vSphere, it is definitely easier to configure on the array than on each virtual disk inside vCenter.
1. Uniformity
2. Less overhead
3. Ease of use |
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