An overview of Virtual Machine File Systems – Nandan Soft

VMware or Virtual Machine File System (VMFS) is a bunch file system that helps ease the process of virtual storage so that you can enable multiple installations of the VMware ESX server, which is a hypervisor that creates partitions in physical servers. There are multiple partitions that are created into virtual machines; VMFS is part of this virtualization suite. To know more you can visit http://blushcheek.com/vmfs-partitions-stored-on-corrupted-raid-arrays-with-or-without-raid-controller

When you talk about VMFS you may think about new machines that are being formed without the oversight of a storage admin. The size of a volume can be modified depending on the need of disrupting network processes. Multiple installations of VMware servers can be used to write and read data simultaneously from a singular storage location. These servers can be added or removed from a volume without affecting any other server hosts. The file and block sizes are adjusted according to the input and output functionality of each machine. In case there is a server failure, a journaling file structure will allow a fast system recovery and prevent disastrous loss of data.

Use of VMFS:

VMware introduces virtual infrastructure with a purpose, which is to serve a need towards change in traditional IT organizations. By doing so, it would provide cheaper, more dependable solutions for network and system leaders. With VI, everything is virtualized and admins can get the maximum output with the least amount of resources. Whereas in traditional IT organizations, hard drives, optical discs and tapes were used as storage media, but Virtual storage provides reliable and protected file systems.

After all, VMFS is a grouped up file arrangement that enables the virtualization domain to avoid limits of other file storage structures. VMFS is designed especially for a virtual situation and hence, is the result of different facilities and benefits.

Functions of VMFS:

VMware was designed to store files, images, and screenshots within a virtual machine. Multiple virtual machines can share one file system; its storage capacity can increase by spanning into multiple VMFS. This file system is not obligatory, and is hence, not installed on every virtual machine.

VMFS managed the creation, allocation, and management of virtual storage for various sets of virtual machines and servers that were created using VMware’s set of tools and technologies. VMFS is also known as VMFS vStorage.

Key features of Virtual Machine File Systems:

  • It helps simplify storage issues of virtual machines as numerous virtual machines are installed over different ESX servers and they can share a single shared storage area.
  • VMFS maintains the distributed setup of virtualization by means of various VMware facilities.
  • Multiple ESX servers can run simultaneously while sharing VMFS.

Limitations of VMFS:

  • It can only be shared with 64 ESX servers at a time.
  • Logical unit support size is limited to 2TB.


Hopefully after reading this the information listed above, with any luck, you know the basic information about VMFS and if you would like to know more in-depth and technical knowledge on the topic, feel free to visit http://blushcheek.com/vmfs-partitions-stored-on-corrupted-raid-arrays-with-or-without-raid-controller.