Tedfl
Contributor
Contributor

vCSA 6.7 Enhanced Linked Mode Maximum Limit Related Inquiries

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In the relevant url, the maximum number of ELMs that can be connected to one vCSA is known as 15. (based on Embedded PSC type).

https://docs.vmware.com/en/VMware-vSphere/6.7/com.vmware.vcenter.install.doc/GUID-4394EA1C-0800-4A6A...

Is it the recommended value? Is it a limit value?

 

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ashilkrishnan
VMware Employee
VMware Employee

 

It will still let you add more vCenter servers, however you might experience issues in near future. For ex: Slowness, inventory search issues, data replication issues, etc.

It can run in a test environment, however not recommended for production setup.

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ashilkrishnan
VMware Employee
VMware Employee

Hi Tedfl,

That's the tested limit. 

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Tedfl
Contributor
Contributor

Hi, 

Thank you for response 

Here's how I test it. More than 15 vcsa are joining testvc01. Currently, 16 vcsa have been joined

root@testvc01 [ ~ ]# /usr/lib/vmware-vmafd/bin/dir-cli nodes list --login 'administrator@vsphere.local' --password 'PASSWORD' --server-name localhost
Node: testvc01.test.lab
Type: PSC
Site: default-site
Partner #1: ldap://testvc02.test.lab
Partner #2: ldap://testvc03.test.lab
Partner #3: ldap://testvc04.test.lab
Partner #4: ldap://testvc05.test.lab
Partner #5: ldap://testvc06.test.lab
Partner #6: ldap://testvc07.test.lab
Partner #7: ldap://testvc08.test.lab
Partner #8: ldap://testvc09.test.lab
Partner #9: ldap://testvc10.test.lab
Partner #10: ldap://testvc11.test.lab
Partner #11: ldap://testvc12.test.lab
Partner #12: ldap://testvc13.test.lab
Partner #13: ldap://testvc14.test.lab
Partner #14: ldap://testvc15.test.lab
Partner #15: ldap://testvc16.test.lab
Partner #16: ldap://testvc17.test.lab

..

..

skip

root@testvc01 [ ~ ]# /usr/lib/vmware-vmdir/bin/vdcrepadmin -f showpartners -h localhost -u administrator -w 'PASSWORD!'
ldap://testvc02.test.lab
ldap://testvc03.test.lab
ldap://testvc04.test.lab
ldap://testvc05.test.lab
ldap://testvc06.test.lab
ldap://testvc07.test.lab
ldap://testvc08.test.lab
ldap://testvc09.test.lab
ldap://testvc10.test.lab
ldap://testvc11.test.lab
ldap://testvc12.test.lab
ldap://testvc13.test.lab
ldap://testvc14.test.lab
ldap://testvc15.test.lab
ldap://testvc16.test.lab
ldap://testvc17.test.lab
root@testvc01 [ ~ ]# /usr/lib/vmware-vmdir/bin/vdcrepadmin -f showpartners -h localhost -u administrator -w 'PASSWORD!' |wc -l
16

 

The build version is as follows

root@testvc01 [ ~ ]# vpxd -v
VMware VirtualCenter 6.7.0 build-13639324

Is the test method wrong?

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ashilkrishnan
VMware Employee
VMware Employee

 

It will still let you add more vCenter servers, however you might experience issues in near future. For ex: Slowness, inventory search issues, data replication issues, etc.

It can run in a test environment, however not recommended for production setup.

View solution in original post

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Tedfl
Contributor
Contributor

Thank you for your answer.

 

It was a test to check whether distribution could not be performed if the number exceeded 15.

 

Thanks for any help.

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