Maybe in a test lab configuration you can use above 80% of the storage, but I would NEVER do that in a production environment. Or even be 100% consumed by VMs living on it. While many B&R products USE snapshots as part of their process, they don't keep them on the VM (well, if the product is working properly).Īlso, I would NEVER have a datastore sized so that it will be used 100% in a VM. Not only do they consume space, the VMs have a performance hit due to the snapshots remaining. I've run reports every 2-4 weeks on configurations where I knew users were NOT removing snapshots properly, and bugged them until they either did, or completely understood the dangers of having snapshots live longer. Then deleted (if no need to revert) within ~72 hours of creation. Either changes within the VM's OS or even a change at the virtual hardware layer. They are supposed to be used (and actually designed to be used) as recovery points during changes to a VM. At 95% is a red alert (danger, danger Will Robinson).Īlso, IF you use snapshots properly, then you don't run into the issues like you described. I typically don't set the yellow alert to any higher than 75% consumed before getting a message. In every environment I've administrated, or set up, we've ALWAYS had the usage alerts set and going to those that needed to see alerts.
Now we have to trust on VMware support.advising me to extend the local storage.what won't be easy saidly.Hope the come with a suitable solution!
DATASTORE USAGE ON DISK ALARM CLEARING .SNAPSHOT NETBACKUP FREE
I really do not understand why VMware does not build in a protection warining that the ratio snapshot versus free diskspace is in danger or at least will BEFORE you start the deletion and create your own VM suicide. So far so good.BUT when you discover the snapshot and eventually want to remove it in some kind of a way the snapshot removal needs the same amount of free storage as the snapshot has grown and because ESXi doesn't warm you or threshold your free space compared to the size of the snapshot, removing the snapshot consumes so much of free space that eventually your datastore is out of diskspace, your VM crashes and you are not able to consolidate.
It's happend to me a second time, you run a VM, need to create a (just in case) snapshot.and forget to remove the snapshot. Maybe it's because of my leak of VMware knowledge, but I'm a bit dissapointed in ESXi.
0 kommentar(er)
