6.5.1

Table Of Contents
5 Select the device to use for your datastore.
Important The device you select must not have any values displayed in the Snapshot Volume
column. If a value is present, the device contains a copy of an existing VMFS datastore. For
information on managing datastore copies, see Managing Duplicate VMFS Datastores.
6 Specify the datastore version.
Option Description
VMFS6 This option is default for 512e storage devices. The ESXi hosts of version 6.0 or
earlier cannot recognize the VMFS6 datastore. If your cluster includes ESXi 6.0
and ESXi 6.5 hosts that share the datastore, this version might not be
appropriate.
VMFS5 This option is default for 512n storage devices. VMFS5 datastore supports access
by the ESXi hosts of version 6.5 or earlier.
7 Define configuration details for the datastore.
a Specify partition configuration.
Option Description
Use all available partitions Dedicates the entire disk to a single VMFS datastore. If you select this option,
all file systems and data currently stored on this device are destroyed.
Use free space Deploys a VMFS datastore in the remaining free space of the disk.
b If the space allocated for the datastore is excessive for your purposes, adjust the capacity values
in the Datastore Size field.
By default, the entire free space on the storage device is allocated.
c For VMFS6, specify the block size and define space reclamation parameters.
Option Description
Block size The block size on a VMFS datastore defines the maximum file size and the
amount of space the file occupies. VMFS6 supports the block size of 1 MB.
Space reclamation granularity Specify granularity for the unmap operation. Unmap granularity equals the
block size, which is 1 MB.
Storage sectors of the size smaller than 1 MB are not reclaimed.
Space reclamation priority Select one of the following options.
n
Low (default). Process the unmap operations at a low rate.
n
None. Select this option if you want to disable the space reclamation
operations for the datastore.
8 In the Ready to Complete page, review the datastore configuration information and click Finish.
The datastore on the SCSI-based storage device is created. It is available to all hosts that have access to
the device.
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