DEC 4000 600 series, Руководство пользователя, Страница: 145 / 242

Special Configurations
Benefits
of a DSSI
VMScluster The benefits of a DSSI VMScluster configuration are:
• Cluster features such as shared data across systems and
satellite nodes.
• High system availability. If one of the systems is unavailable,
for example, due to a system malfunction, the satellites
booted through it are able to continue operating through the
other system.
If one of the systems fails, all satellite nodes booted through that
system lose connections to the system disk. Each satellite node,
however, can access the system disk through a second path. The
satellite nodes establish a new connection through the other
system and continue operation.
To increase system availability, a second system disk may be
added to each boot node. If one system disk fails, the remaining
system disk would continue to service one system and the
satellite nodes booted through it.
System Configuration 6–5