Hello,   You are very welcome.   If you leave it at the default, you will very likely need to run it multiple times.  ESXCLI unmap works same as VMKFSTOOLs.   It creates a large hidden file, then deletes it, sending UNMAP for those specific LBAs.  So you could just end up allocating an LBA that was already free then unmapping it right after.   Run it once with default, then increase it incrementally.  I.e. 400.  See if you get better results.   FYI:  You can also increase the warning threshold on the EQL volume so trigger less often.   Regards,  Don  
I know this isn't a critical fault but in the past I've used vmkfstools -y to resolve this. We are running ESXi 5.5 and the EqualLogic firmware is V7.1.5. I know its old and we have it scheduled to upgrade soon. My question is why doesn't vmkfstools -y work any more in reclaiming disk space? If there is another procedure, where can I find it? Thanks, Dave
PS6100X In-use space exceeds the warning limit.