If your VMFS5 datastore has been previously upgraded from VMFS3, it continues to use the master boot record (MBR) partition format, which is characteristic for VMFS3. The GPT format enables you to create datastores larger than 2 TB. Any new VMFS5 or VMFS6 datastore uses GUID partition table (GPT) to format the storage device. Do not mix devices of different formats within the same datastore cluster. However, all datastores in the cluster must use homogeneous storage devices. VMFS5 and VMFS6 can coexist in the same datastore cluster. vCenter Server performs compatibility checks to validate Storage vMotion across different types of datastores. Storage vMotion supports migration across VMFS, vSAN, and Virtual Volumes datastores. VMFS5 and VMFS6 datastores support the block size of 1 MB. The block size on a VMFS datastore defines the maximum file size and the amount of space a file occupies. The spanned datastore cannot extend over devices of different formats. A spanned VMFS datastore must use only homogeneous storage devices, either 512n, 512e, or 4Kn. When you work with VMFS datastores, consider the following: Storage vMotion across different datastore types SEsparse for virtual disks larger than 2 TB. VMFSsparse for virtual disks smaller than 2 TB. Support for virtual machines with large capacity virtual disks, or disks greater than 2 TBĭefault use of ATS-only locking mechanisms on storage devices that support ATS. Storage devices greater than 2 TB for each VMFS extent See Manually Reclaim Accumulated Storage Space on VMFS5.įor a VMFS5 datastore that has been previously upgraded from VMFS3. Manual space reclamation through the esxcli command. Comparing VMFS5 and VMFS6 Features and FunctionalitiesĪccess for ESXi hosts version 6.5 and laterĪccess for ESXi hosts version 6.0 and earlier The following table compares major characteristics of VMFS5 and VMFS6.
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