HP Storage Mirroring Software - Manual (Page 33)

Storage Mirroring Recover overview Page 32 of 677
Chained
Description
The source servers sends replicated data to a target server, which acts as
a source server and sends data to a final target server, which is often
offsite.
Applications
This is a convenient approach for integrating local high availability with
offsite disaster recovery. This configuration moves the processing burden
of WAN communications from the source server to the target/source
server. After failover in a one-to-one, many-to-one, or one-to-many
configuration, the data on the target is no longer protected. This
configuration allows failover from the first source to the middle machine,
with the third machine still protecting the data.
Considerations
l
The target/source server could become a single point of failure for
offsite data protection.
l
You must pause the target when backing up database files on the
target.