What model/firmware storage array are you using? What SRA version?
Thank for your reply , provide Information as below：
SRA Version：Dell EMC Storage Center SRA 18.104.22.168https://www.vmware.com/resources/compatibility/detail.php?productid=45560&deviceCategory=sra&details=1&srmVer=466&partner=23&releases=466&page=1&display_interval=10&sortColumn=Partner&sortOrder=Asc
in my case it was a Tintri 22.214.171.124 SRA, but that's not so important.
my cause was this folder will be deleted everytime if anyone runs the microsoft disc cleaner tool (cleanmgr.exe)
my solution: don't run this...