Good afternoon,
My 5 node Hyper-V cluster is presently connected to 12 CSVs that are accessed from the Dell Compellent via fiber. Every Satruday at 3:00:15AM all CSVs go offline and cause major hell. They can be brought back online without problems but this is getting very annoying. This problem never takes place during the week and once they are brought online, they stay online until the next Saturday at 3:00:15AM.
This environment was upgraded from Windows Server 2012 to Windows Server 2012 R2 following best practices. The environment before the upgrade was setup by our director before they left. No documentation nor reasoning behind the setup was provided when asked for it.
In the old environment all of the CSVs were permanently set for redirected access and this problem never occurred. My theory is that if I place all CSVs in redirect mode, then this problem might go away. Would it be reasonable to say that this could be what is causing the problem?
Also, would this problem be caused by a scheduled defrag that takes place at 3:00:15AM and if so where would I check for thos settings?
The event ID that I am receiving is shown below. It appears for each of the 10 CSVs after which new errors show up pointing to problems with the virtual machines because they cannot access their virtual drives that are stored on the CSVs.
Event ID 257: The volume Enterprise_Storage (C:\ClusterStorage\Volume11) was not optimized because an error was encountered: This operation is not supported on this filesystem. (0x89000020)
Any suggestions/help will be greatly appreciated.
Thanks in advance!