ESX can format SCSI-based storage devices as VMFS datastores. VMFS datastores primarily serve as repositories for virtual machines.

You can store multiple virtual machines on the same VMFS volume. Each virtual machine, encapsulated in a set of files, occupies a separate single directory. For the operating system inside the virtual machine, VMFS preserves the internal file system semantics, which ensures correct application behavior and data integrity for applications running in virtual machines.

In addition, you can use the VMFS datastores to store other files, such as virtual machine templates and ISO images.

VMFS supports the following file and block sizes, enabling your virtual machines to run even the most data-intensive applications, including databases, ERP, and CRM, in virtual machines:

Maximum virtual disk size: 2TB with 8MB block size

Maximum file size: 2TB with 8MB block size

Block size: 1MB (default), 2MB, 4MB, and 8MB