VSAN and VAAI ATS, ATS heartbeat

[kawaman]

Hi all,

Our the vSphere cluster is configuring with VSAN.

I have the extarnal iSCSI storage connection issues about VAAI ATS heartbeat.

(Enabling or disabling VAAI ATS heartbeat https://kb.vmware.com/kb/2113956)

So I have to disable VAAI ATS heartbeat.

But VSAN need VAAI ATS.

Disabling the VAAI functionality in ESXi/ESX (1033665) | VMware KB

"If you are running a VMware Virtual SAN environment, it is important that Hardware Assisted Locking (ATS) is not disabled."

Does anyone know about the "VSAN not need VAAI ATS heartbeat" ?

If the changing VSAN cluster host settings  "VAAI ATS heartbeat" disabled , and  not changing "VAAI ATS" enabled, are there no problem?

Our environment :

- vSphere 6.0u1 and VSAN 6.1

[sungho · Accepted solution]

Hi, Kawaman

Did you check the page below?

Creating a virtual machine on a VSAN datastore fails with the error: Cannot complete file operation ...‌

VSAN version is 5.5 but it might be a help.

Regards,

Sungho

[kawaman]

Hi sungho,

Sorry for late reply. Thank you for your information.

I'm currently testing ATS heartbeat off in my VSAN 6.2 test envirnment.

For now, there is no problem.

And I'm waiting the official answer from vmware support.

[zdickinson]

Good morning, are you trying to use vSAN for HA datastore heartbeats?  This is not supported.

http://cormachogan.com/2013/09/17/vsan-part-9-host-failure-scenarios-vsphere-ha-interop/

"Another noticeable difference with vSphere HA on VSAN is that the VSAN datastore cannot be used for datastore heartbeats."

Thank you, Zach.

[kawaman]

Hi zdickinson,

I don't use datastore heratbeat on VSAN datastore. Thanks for your information.

I got the official answer from support.

"VSAN datastore don't use VAAI ATS heartbeat"

"VSAN datastore use VAAI Hardware Assisted Locking (ATS)"

So it is no problem disabling VAAI ATS heartbeat.

Thanks.