vsan datastore imcompatible with object space reservation SPBM

[ewy]

Setup:

vsan Stretched cluster running esxi 6.7U1, all flash.

"Issue":

When I try to create a VM storage policy with object space reservation set to 25, 50 or 75% the vsan datastore doesn't appear as a compatible one but it does if I choose fully thin or thick. I have plenty of space available.

It doesnt matter what setting I try, (RAID1,5,6, Local, Stretched) it is always the same.

I haven't been able to find any special requirements for being able to create this type of policy.

What am I missing?

[a_p_ · Accepted solution]

Do you have deduplication and compression enabled?

AFAIK this requires object space reservation to be either 0%, or 100%.

André

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[ewy]

I do, now that i know what to look for googling it was easier.

Found it here Deduplication and Compression | vSAN Space Efficiency Technologies | VMware

Thanks a.p.​