Hello, zxu, and thank you for your question. You can find more info on how to manage L2 flash cache here in this article:
https://knowledgebase.starwindsoftware. ... dance/661/
And, regarding your question about deduplication on LSFS device. Please find a folder with PowerShell samples scripts. By default it is located here:
C:\Program Files\StarWind Software\StarWind\StarWindX\Samples\powershell\
There is a script called CreateHA_LSFS.ps1 You can enable deduplication, simply adding to the script this command:
Add-DDDevice -DeduplicationEnabled $true
Feel free to edit the sample script according to your needs.