Administrator Guide

The following table describes the expected behavior for new VM creation with the Deduplication option.
Table 6. Expected Behavior for New VM Creation with Deduplication
VM Storage Policy = None
Specied
VM Storage Policy =
Deduplication Enabled
VM Storage Policy =
Deduplication Disabled
Storage Container Deduplication
Enabled
Volumes created with Default
Data Reduction prole value
from storage container
Volumes created with Dedup
with Compression Data
Reduction Prole
Volumes created with the Data
Reduction Prole set to None
Storage Container Deduplication
Disabled
Volumes created with Default
Data Reduction prole
value from storage container
VM creation fails because user is
trying to set an unsupported
capability
Volumes created with the Data
Reduction Prole set to None
The following table describes the expected behavior for existing VMs when a vCenter user changes the associated VM policy. This table
assumes that both Compression and Deduplication are enabled on the storage container.
Table 7. Expected Behavior for VM Storage Policy Update on Existing VMs
Old VM Storage Policy New VM Storage Policy Expected Behavior
Compression Enabled Compression Disabled Data Reduction Prole of associated VVols changes from Compression to None.
Data is uncompressed at the next data progression cycle.
Compression Disabled/
None Specied
Compression Enabled Data Reduction Prole of associated VVols changes from None to Compression.
Data is compressed at the next data progression cycle.
Deduplication Disabled Deduplication Enabled Data Reduction Prole of associated VVols changes to Deduplication with
Compression. Data is deduplicated at the next data progression cycle.
Deduplication Enabled Deduplication Disabled Data Reduction Prole of associated VVols changes from Deduplication with
Compression to None. Data is rehydrated at the next data progression cycle.
The following table describes the expected behavior for existing VMs when a storage administrator selects or clears the Compression and
Deduplication checkboxes on a storage container.
Table 8. Expected Behavior for Compression and Deduplication Checkboxes on Storage Container
Old Checkbox Value New Checkbox Value Expected Behavior
Compression Enabled Compression Disabled Data Reduction Prole of existing volumes remains unchanged.
Compliance check warns that the VM is not compliant with storage container.
Clone/Fast Clone of VM to the same storage container follows rules of Table 5.
Expected Behavior for New VM Creation with Compression and might fail if the
VM Storage Policy is now noncompliant.
New volumes are created with the Data Reduction Prole set to None.
Compression Disabled Compression Enabled Data Reduction Prole of existing volumes remains unchanged.
Clone/Fast Clone of VM to the same storage container follows rules of Table 5.
Expected Behavior for New VM Creation with Compression and does not fail.
New volumes are created with the Data Reduction Prole according to Table 5.
Expected Behavior for New VM Creation with Compression.
Deduplication Disabled Deduplication Enabled
Data Reduction Prole of existing volumes remains unchanged.
66 Storage Center Administration