Arturo_Lopez
9 years agoLevel 5
VMWare Backup consumed space on DataStore
Hello,
Actually we are having a space problems in some dataStore of VCenter. The problems seems to occur after take a backup of VMWare. I need to know if when netbackup take a backup from VMware in her father job this cosumed space of DataStore. I thought that when Netbackup make a backup of VMware, firstly take a snapshot that no consume space and after transport this snapshot to the Backup storage but really now i don't know what it's the correct process because the errors on the DataStore seems to be produced about the Snapshot.
Regards.
- As soon as a VMware snapshot becomes active then *ALL* disk IO writes/updates are cached in to a write pending log, i.e. the snapshot. The snapshot can grow rapidly for very active guest virtual machines. It is best practice in VMware to leave 15% to 20%, or more, free space within a VMFS datastore when there are VMs in the datastore which require backups.