VMFS (Virtual Machine File System) is developed & exclusive to VMware. VMFS is a high-performance clustered file system used by the VMware vSphere.
VMFS is designed & optimized file system for the optimum performance of the virtual machines in virtual environment. VMFS is used to store the virtual machine disk image , snapshots. VMFS optimized for use of large files in the virtual environment.
Multiple ESXi servers can read/write the same filesystem simultaneously while individual virtual machine files are locked.VMFS volumes can be logically “grown” (non-destructively increased in size) by spanning multiple VMFS volumes together.
Latest version of VMFS is VMFS 5 which is released with the vSphere ESXi. It can handle volume sizes upto 64TB & datastores upto 2TB.
Benefits of VMFS:-
- Optimized Virtual machine access
- Simplified provisioning & administration of virtual machine
- Optimized storage utilization
- Faster Recovery of VM
- Facilitates Dynamic Growth
- Enables High Availability with Lower Management Overhead
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