TRIM/UNMAP support for iSCSI sessions

Brass Contributor



We've setup a virtual disk on iSCSI server (Windows Server 2022) using New-IscsiVirtualDisk and then connected to this disk from another server machine.


Running "fsutil fsinfo sectorinfo" for this remote disk says: 

Performs Normal Seeks
Trim Not Supported


But If we mount the same vhdx file locally (not using iSCSI), the fsutil reports:

No Seek Penalty
Trim Supported


The exact same thing happens for "ramdisk"s as well.  Actually we caught that issues while were using ramdisks.


Could some please advise if it's possible to enable UNMAP support over Microsoft's iSCSI implementation?



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