HP Data Protector A.06.11 Recovery Manual page 24

Hosting system is a working Data Protector client used for Disk Delivery Disaster
Recovery with Disk Agent installed.
Auxiliary disk is a bootable disk that has a minimal operating system with networking
and Data Protector Disk Agent installed. It can be carried around and used to boot
the target system in Phase 1 of Disk Delivery Disaster Recovery of UNIX clients.
Disaster recovery operating system (DR OS) is the operating system environment
where the process of disaster recovery is running. It provides Data Protector a basic
runtime environment (disk, network, tape and filesystem access). It has to be installed
and configured before the Data Protector disaster recovery can be performed.
DR OS can be either temporary or active. Temporary DR OS is used exclusively as
a host environment for some other operating system restore along with the target
operating system configuration data. It is deleted after the target system is restored
to the original system configuration. Active DR OS not only hosts the Data Protector
disaster recovery process but is also a part of the restored system because it replaces
it's own configuration data with the original configuration data.
Critical volumes are volumes required to boot the system and Data Protector files.
Regardless of the operating system, these volumes are:
• boot volume
• system volume
• volume where Data Protector executables are installed
• volume where the IDB resides (Cell Manager only)
NOTE:
If the IDB is located on several volumes then all volumes where the IDB resides
are critical.
Apart from the critical volumes stated above, CONFIGURATION is also a part of the
critical volumes set for Windows systems. Services are backed up as a part of the
CONFIGURATION backup.
Some items included in the CONFIGURATION can be located on volumes other than
system, boot, Data Protector or IDB volumes. In this case these volumes are also part
of critical volumes set:
• user profiles volume
• Certificate Server database volume on Windows Server
• Active Directory Service volume on domain controller on Windows Server
• quorum volume on Microsoft Cluster Server.
24 Introduction