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33 Dell EMC SC Series: Microsoft Windows Server Best Practices | 680-042-007
SC Series volume before encryption
After the BitLocker encryption process is run, the active snapshot increases to the full size of the data
contained on the volume, plus an additional 500MB overhead required by BitLocker.
SC Series volume after encryption
At this point, any pre-existing snapshots on the volume are no longer valid because the data contained in
those snapshots is not encrypted. Unless there is a specific need for them, it is recommended to expire any
pre-existing snapshots. Once the snapshots are expired and Data Progression is run, the space used by the
snapshots is returned to the SC Series volume.
Note: If BitLocker encryption is applied to an SC Series volume without any snapshots, the active snapshot
size will only increase by the overhead space required by BitLocker (approximately 500 MB).
Running BitLocker on Windows Server VMs has similar results compared to running it on physical servers.
Refer to the Dell SC Series Storage and Microsoft Hyper-V and Dell EMC SC Series Best Practices with
VMware vSphere 5.x-6.x, best practices guides for more information on configuring Windows Server VMs on
each platform.