Correct answer & explanation
✓Thin: Allocates storage only as data is written
Thin provisioning allocates space on demand. Thick provisioning allocates all space at creation. RDM (Raw Device Mapping) provides direct access to a LUN. VMDK is the virtual disk file format. VHDX is Microsoft’s virtual hard disk format.
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Same concept, more angles
1 more way this is tested on 350-401
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. Drag and drop each VM storage type on the left to its matching characteristic on the right.
medium- ✓ P1.Thin: Allocates storage on demand, grows as needed
- ✓ P2.Thick: Pre-allocates full storage at creation
- ✓ P3.RDM: Provides direct access to a physical LUN
- ✓ P4.VMDK: VMware virtual disk file format
- ✓ P5.VHDX: Hyper-V virtual disk file format
Why P1: Thin provisioning allocates space on demand, thick provisioning allocates full space at creation, RDM provides direct LUN access, VMDK is VMware's virtual disk format, and VHDX is Hyper-V's virtual disk format.