HP 12000 Design Manual page 78

at that site. In the event of a major disaster at a site then the replicated copy of data can be
accessed in several ways:
At disaster recovery site using a separate backup application master server data can be
recovered to new servers.
A replacement VLS and servers can be installed at the primary site and data can be reverse
replicated from the disaster recovery site over the low bandwidth link, although this is not
recommended for high volumes of data (TBs) because of the time to replicate data wholesale
over a relatively small link speed.
Data can be copied to physical tape at the disaster recovery site then transported to the
primary site and imported to new servers and arrays using physical tape at the primary site.
Tape could also be copied to the VLS and then recovered from there.
Solution advantages:
High Data availability solution, data always held in three locations and on tape
Total Solution under HP Data Protector control
Cost effective disaster recovery using low bandwidth links.
Solution trade-offs: Some scripting of backup application is required to allow background imports
of replicated cartridges to take place
78 VLS Devices