I/O is frozen on database . No user action is required. However, if I/O is not resumed promptly, you could cancel the backup.
Posted on 2014-01-30
I am getting a sporadic message in my sql server logs about frozen I/O on all databases. Then about 4 seconds later, I/O resumes, and all the databases get backed up, and a dbcc checkdb is run. Why is this happening?
I have verified that our Symantec backup does not run at this time, nor does my scheduled SQL backup routine. The Symantec backup does take a snapshot prior to the scheduled backup process, but doesn't take snapshots throughout the day.
This particular server does not have a lot of users, it has an SSRS database and runs several SSIS/SSAS jobs.