cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
230
Views
5
Helpful
1
Replies
Highlighted
Collaborator

How does High Availability (HA) work on Fabric Interconnects with only Blade Servers attached?

Hi Experts,

I'm familiar with the way HA works with UCS B-Series Chassis - the Chassis has a SEEPROM that stores the cluster state which both Fabric Interconnects can see (and write to)

But how does HA work if you have only C-Series Blade servers attached, such as a Hyperflex CLuster?

I will assume that the Cluster State is written to one of servers (which one? the first one discovered???) but where? I imagine it has to be some FLASH somewhere, and I'm guessing the logical answer is the CIMC configuration storage.

But I'm only guessing.

Can anyone confirm this, or point me to a reference that explains it?

 

RedNectar
aka Chris Welsh


Don't forget to mark answers as correct if it solves your problem. This helps others find the correct answer if they search for the same problem

1 ACCEPTED SOLUTION

Accepted Solutions
Highlighted
Cisco Employee

Hello,
If you run 'show cluster extended-state' from local-mgmt (or from the first UCSM command line prompt) it tells you exactly which servers the backup db's are stored. For Chassis' it is stored on the SEEPROM, as you mentioned. For Rack Servers I believe it is stored on the CIMC as you suggested.
Best Regards,

Neil Martin .ılı.ılı.
CX Technical Consultant Engineer
Cisco Unified Computing Systems and Server Virtualization

SUSE Certified Administrator
In Enterprise Linux 12

Vmware Certified Professional
Data Center Virtualization 2019

View solution in original post

1 REPLY 1
Highlighted
Cisco Employee

Hello,
If you run 'show cluster extended-state' from local-mgmt (or from the first UCSM command line prompt) it tells you exactly which servers the backup db's are stored. For Chassis' it is stored on the SEEPROM, as you mentioned. For Rack Servers I believe it is stored on the CIMC as you suggested.
Best Regards,

Neil Martin .ılı.ılı.
CX Technical Consultant Engineer
Cisco Unified Computing Systems and Server Virtualization

SUSE Certified Administrator
In Enterprise Linux 12

Vmware Certified Professional
Data Center Virtualization 2019

View solution in original post

Content for Community-Ad