NetBackup performance when using VM thin - Thick provisioned storage
Dear All,
We are using the Netbackup 7.6.0.1 & Our virtualization is as below:
VCenter 5.5
ESX host : 4.1.x to 5.5
Some of the VM server size 1TB to 4.5TB (All VM server disk is configured Thick provision)
And all backup are replating to Offsite (via: SLP) (Storage: iSCSI)
Currently All VM backup is configured on netbackup and created two policies in case lage size of backup. (VM Policy: Exclude data disk & MS Windows policy for disk partation (i.e E:\ d:\ etc.. )
And below 1TB all VM server is configured with "Include all disk".
Now I am planning to migrate the VM server from Thick provision to Thin Provision.
I asume that I will achive below after changes:
1) I will achive VM Storage free space.
2) Netbackup backup size & time will reduce.
3) Offsite replication time will and size will reduce.
Can you guide I am correct or not?
And Which format I am using Thick or Thin?
Regards,
Atharava13
If your backups are already NetBackup BLIB (Block Level Incremental Backup) based (i.e. leveraging VMware CBT (Change Block Tracking)), and also configured to ignore deleted/unused blocks then changing from thick to thin VMDK on VMware will have no impact upon NetBackup. Yes, you will achieve some reclaimed space within the VMFS data stores - but there will be no change in backup job duration or size because the backup job is already as optimised as it can be.