VSAN Free not surviving power failures
Posted: Fri Dec 03, 2021 10:38 am
I have setup a 2 node Hyper-V cluster using VSAN Free by following the instructions from this page:
https://www.starwindsoftware.com/resour ... rver-2016/
Using 2 DL360-G9 servers with 128 GB ram and 4 SAS 450GB disks plus 4 x1GB network and 2x 10GB network.
Setup took some time as I was using the free version and had to use the powershell scripts.
In the end it worked fine.
Now the problem is the cluster does not survive power failures. After pulling the plug on all servers at once, the hyper-v cluster won't come up. Looking at the VSAN console it shows a nodes as not synchronized and it won't start synchronizing.
Only way to recover is to run a script that marks the devices on one of the nodes as synchronized, only the synchronization starts.
Is there a way to make the system more resilient to power failures? (dont tell me to use a UPS). Will using 3 nodes be better?
And can we make recovery automatic?
Lex
https://www.starwindsoftware.com/resour ... rver-2016/
Using 2 DL360-G9 servers with 128 GB ram and 4 SAS 450GB disks plus 4 x1GB network and 2x 10GB network.
Setup took some time as I was using the free version and had to use the powershell scripts.
In the end it worked fine.
Now the problem is the cluster does not survive power failures. After pulling the plug on all servers at once, the hyper-v cluster won't come up. Looking at the VSAN console it shows a nodes as not synchronized and it won't start synchronizing.
Only way to recover is to run a script that marks the devices on one of the nodes as synchronized, only the synchronization starts.
Is there a way to make the system more resilient to power failures? (dont tell me to use a UPS). Will using 3 nodes be better?
And can we make recovery automatic?
Lex