Backup Strategies for Integrity Virtual Machines

Dynamically Attached Device Backup and Recovery
By taking advantage of the online add and delete capabilities of Integrity VM attached devices, you
can avoid network connections for B&R altogether. While attached devices cannot be shared
amongst virtual machines simultaneously, they can be accessed exclusively by individual virtual
machines without having to restart them. You can automate the online addition and deletion of the
attached device by leveraging “pre-exec” and “post-exec” scripts executed by the EBS software. As
shown in Figure 5, this does require both a disk agent and a media agent in each virtual machine,
but it does not require a network connection. You will be required to define the backup
configurations for each virtual machine so that the EBS software does not attempt to initiate the
backup of more than one VM at a time on a single VM Host system.
Figure 5 Backup and recovery of virtual systems using OLA and OLD of attached devices
Note that you will need to define your pre-exec and post-exec scripts to execute on the VM Host
system. Use the hpvmmodify command to add and remove the attached device. For example, if you
are using a tape drive that corresponds to the path /dev/rscsi/c0t1d3, then add the tape drive
to the VM named vmdev1 with:
hpvmmodify –P vmdev1 –a tape:scsi::attach:/dev/rscsi/c0t1d3
Subsequently, you remove the tape drive from vmdev1 using the following:
hpvmmodify –P vmdev1 –d tape:scsi::attach:/dev/rscsi/c0t1d3