We plan to implement the following configuration:

2 HP3000 on separated locations, connected over a FiberOptic Link, with 2
separated HVD10/HASS boxes mirrored from the primary site to the remote
location. The goal is to be able to switch over to the recovery system in
case of emergency without loss of data within 2 hours. The system discs
will be mirrored "manually". according to HP a link of HVD100/HASS-boxes
over a FiberOptic Link is not possible.

Does anyone have experience with a similar solution? XP48 and EMC2 is too
expensive for our usage, as the mirrored data will not exceed 10 GB.