I'm experiencing an issue where some volumes that have a lot of churn end up reporting over 100% space utilization. One example is a drive that we are using to store SQL backups. We're running Windows 2008R2, SQL 2008, and Nimble CS260G 126.96.36.199-45626-opt.
Every night we drop copies of our databases onto the T: drive, which is a 100GB fully thin-provisioned volume. This process also deletes any backups that are older than 2 days. When I look at the volume in Windows, we are using 60GB of space. When looking in the Nimble Array, it reports that we are using 172.31 of 100 GB.
I understand that there's no way for 2008R2 to natively give space back to the array, but I don't understand how it can take up more than 100% of the space that it has been given. Has anyone else run into something like this? It's currently not an issue for us but I could see this becoming a problem months/years down the road.