Logical block size - how to manage?

[lejeczeki]

Hi guys.

In guests - i'm new to VMware - pvscsi disks I see are:

...

Logical block size: 512 bytes

...

This is ESXi 8. Can this be manged/changed - given underlying hardware supports that too - and if yes then where this can be changed (& if on per-VM-basis) ?

many thanks, L.

[ssalmanhafiz]

Only way to increase the blocksize is by recreating. For local storage recommendation is to create two partitions for VMFS so you can manually format it with the correct block size.

[lejeczeki]

Hi thanks.

And how would this go down all the way, to the actual disk devices?

Would you also configure - if a disk device offers that - some devices sector size with 512 for VMFS with 512 and other with 4096, similarly for such 4096 VMFS?

So user can declare, choose between two sector sizes, for VMFS at creation/format time? Apologies, I'm only trying a trial ver. of ESXi first time (and that does not go well on my home-cheap hardware)

And lastly, guest VM would you also check that - should/does guest gather those bits from ESXi/VMFS if say, vNVMe was provisioned to the guest?

(i've just looked at ESXi webui - creating a new datastore with VMFS6 does not give/ask any such parameters - did understand that part wrong?)

many thanks, L.

[RandyIvers]

Any update?