Unplanned downtime is caused by hardware, software or administrator
failure that was not "protected" by the system. These failures cause an
unanticipated denial of service to users and applications.
Today's NonStop e-business environment does not leave room for
unplanned downtime. Systems, applications and data must be available
to users 100% of the time to meet daunting customer service levels.
Tru64 UNIX 's evolutionary reliability and availability architecture
and design are a strong statement to you that hp is committed to solving
your availability and performance needs by providing high availability
leadership solutions. HP's goal is to minimize unplanned downtime so
that system availability stays at the highest possible level. Here's
TruCluster Server: No
matter how reliable your single system is, only a clustered
configuration can keep your business running absolutely uninterrupted.
TruCluster Server software guarantees your service levels with maximum
availability while reducing your management costs. How? By managing all
systems in the cluster as one single system. No other vendor can offer
you this level of availability and ease of management at the same time.
Alternate pathing: Tru64 UNIX
supports alternate pathing with automatic failover (transparent to
applications) for storage, network peripherals, and cluster
interconnects. In a cluster environment, DRD provides failover to
storage through other systems in the cluster; essentially providing
alternate pathing at the system level. The LSM software (Logical Storage
Manager) also provides transparent failover to mirror sets.
Automatically remove failing components:
Tru64 UNIX serviceability features allow the system to automatically
detect failing components such as CPU, memory, or environmental devices,
and shut them down to avoid system crashes. You can therefore experience
maximum system availability until you are ready to service these
components at your most convenient time.
Memory error resiliency:
Tru64 UNIX guards memory with a "just-in time" scrubbing model, where
correctable errors are scrubbed when encountered by the operating system
or application code, ensuring maximum availability. To enhance this
capability, Tru64 UNIX has implemented a trigger mechanism, called the
memory troller, which pro-actively locates and scrubs correctable memory
errors prior to the operating system or application reading the memory.
The troller arranges for the memory page containing the error to be
marked bad and if the page is free (or when it becomes free) maps the
page out, so it will not be reused.
Protect your systems from disaster:
Tru64 UNIX solutions protect IT systems from disaster by replicating
systems at multiple sites to ensure continuous operation in the event of
a disaster (ie fire, flood, earthquake, etc.) There are several ways to
achieve degrees of disaster protection, from backups to extended
clusters to more complex configurations. To learn more about how to
enhance high availability and include disaster protection,
click here. This white paper includes product information on
Campus-Wide Disaster Tolerant Clusters and
Data Replication Manager, key components of a robust disaster
protected environment. Additionally, information is included on
Enterprise Volume Manager and
Reliable Transaction Router products that enhance the IT environment
that requires high availability and disaster protection.