Disk Space Requirements - HP Data Protector A.06.11 Integration Manual

can be safely performed (whether enough disk space is available). If not, the
backup of that particular virtual machine or filesystem is skipped.
Table 8 Disk space requirements
Backup Required disk space on
method datastores
Snapshot
The sum of the sizes of all the
virtual machine disks, plus the
size of the virtual machine
RAM if specified.
Suspend
The size of the virtual machine
RAM.
VCBimage
The sum of the sizes of all the
virtual machine disks.
VCBfile
For the VCBimage and VCBfile backup methods, disk space is needed also on
the backup proxy system for mounting virtual machines and filesystems. VCB
checks whether enough disks space is available and informs Data Protector of it.
If not, Data Protector skips the backup of that particular virtual machine or
filesystem.
To disable the check for available disk space that is performed during backup of
a particular datacenter, set the Data Protector environment variable
OB2_VMWARE_SKIPSPACECHECK in the datacenter configuration file to 1.
To set the OB2_VMWARE_SKIPSPACECHECK variable using the Data Protector
GUI, perform the following:
1. In the Context List, click Backup.
2. In the Scoping Pane, expand Backup Specifications and then VMware. Click
a backup specification for your VMware datacenter.
3. In the Source property page, right-click the VMware datacenter and select
Set Environment Variables....
4. In the Advanced dialog box, add the OB2_VMWARE_SKIPSPACECHECK
variable and set its value to 1. Apply the change by clicking OK.
Integration guide for VMware Virtual Infrastructure, Sybase, Network Node Manager,
Explanation
After a snapshot is created, changes
made to the virtual machine disks are
recorded to separate files (one delta file
is created for each virtual machine disk).
A delta file can grow up to the total size
of the virtual machine disk.
The Suspend method does not create any
delta files. However, a copy of the
memory state is always made, even if
the memory file is not selected for
backup.
Same as for the Snapshot method.
and Network Data Management Protocol Server 67