HP Data Protector A.06.11 Recovery Manual page 127

No action is required, because the alt_disk_install command, used to
prepare the auxiliary disk, ensures consistent disk image without entering the
state of minimal system activity.
• If you want to work with the auxiliary boot disk, you have to prepare it. Only
one bootable auxiliary disk is required per site and platform. This disk has to
contain the operating system and network configuration, and has to be
bootable.
• Provide a Pre-exec script that performs the following:
• Physical and logical storage structure of the storage
• Current logical volume structure (for example, on HP-UX, using
vgcfgbackup and vgdisplay -v)
• ServiceGuard configuration data, disk-mirroring, striping
• Filesystems and mountpoints overview (for example, on HP-UX, using bdf
or copy of /etc/fstab)
• System paging space information, for example, on HP-UX, using the output
of the swapinfo command
• I/O-structure overview (for example, on HP-UX, using ioscan -fun and
ioscan -fkn)
• Client network settings
Collects all the necessary information about the environment and puts it in an
available location in case of a disaster recovery. It is suggested to put it onto
a different system which can be accessed easily. The information should cover:
• An emergency copy of the data can also be put into the backup itself. If
done so, the information has to then be extracted prior to the actual
recovery.
• Consider logging out all users from the system.
• Shut down all applications, unless the application data gets backed up
separately, for example, using online database backup.
• You may want to restrict network access to the system, so that no one can
log on to the system while the backup is running (for example, on HP-UX,
overwrite inetd.sec and use inetd -c).
• If needed, enter the state of minimal system activity (for example, on HP-UX,
use sbin/init 1; wait 60; check if run_level 1 is reached). Note that
this is a modified "init 1" state.
• Provide a post-exec script that elevates the system to the standard run-level, restarts
applications, and so on.
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