Understanding VMFS Datastores

I have gone through vSphere 5.5 Storage Documentation and find some useful information, so i thought to share with you some key points.

Datastores are logical containers and datastores can also be used for storing ISO images, virtual machine templates, and floppy images.

Different VMFS versions and their compatibilities with ESX/ESXi hosts :

VMFS ESX/ESXi 3.x host ESX/ESXi 4.x host ESXi 5.x host
VFMS2 RO RO N
VMFS3 RW RW RW
VMFS5 N N RW

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