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Reclaim VMWARE datastore unsued space

Reclaiming unused disk space on VMWARE vmfs5 datastore running on ESXi6
Datastore is on Equallogic SAN

I did this a long time ago probably when I was running ESXi5.5 using this cmd but its not working anymore.
vmkfstools -y 60

VMware Docs say to use this CMD but they dont show you example or tell you the impact on the server.
Since this is production I need more info before I run it.
esxcli storage vmfs unmap

Can someone confirm proper procedure for my example of VMFS5 on ESXi6

Thanks
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Ajay Chanana
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baysysadmin

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Thats what I thought, I ran the new CMD and it was quick
Luckily i had a spare host in maintenance mode, but I don't know what impact it would have on a running live host.
Thanks
The impact is negligible as it reclaims the space in small chunks. Until and unless your datastore is highly utilized and having latency you will not see the difference.