Introduction to NonStop Operations Management

Contingency Planning
Introduction to NonStop Operations Management–125507
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Data Recovery and Integrity
NonStop Access for Networking provides alternate paths to guard against local area
network (LAN) failure in client/server topologies.
Most Tandem systems are delivered with a fault-tolerant configuration. It is up to you to
maintain a fault-tolerant configuration whenever you change or add hardware. When
changing the configuration, follow the guidelines described in Section 7, “Change and
Configuration Management.”
Data Recovery and Integrity
By using the NonStop Transaction Manager/MP (TM/MP) product, you can prevent loss
of data and more quickly bring your applications up after a disaster.
NonStop Transaction Manager/MP (TM/MP)
NonStop TM/MP maintains database consistency during processing. The database can
reside on a single Tandem system or can be distributed over multiple nodes of an
Expand network. In either case, NonStop TM/MP ensures that the database remains
consistent in the event of a program failure, a single component failure, or the total loss
of communications between nodes.
Using NonStop TM/MP, you can also perform online dumps and audit dumps to a
remote system, thus enabling you to maintain a copy of the database at a remote backup
site.
Data Archiving
In the event of a computer disaster, archived data might be key to the survival of your
business. To protect essential data, you first need to determine which data is fundamental
to your operation and how much of that data your company can afford to lose before its
survival is threatened. Once you have identified the essential data, you can design a plan
for backing up the data on a regular basis. Tandem provides NonStop TM/MP online
dumps and the BACKUP and BACKCOPY utilities (for archiving to tape) for backing
up data.
Backing up data is not enough; storing data in a safe place is equally important.
Consider these guidelines when storing data:
•
Store data and archive media (disks, tapes, microfiche, and so on) in a controlled
environment, at a cool temperature, away from the computer room.
•
For archiving, use rooms or facilities that have controls and sensors for detecting
and warning of extreme temperature, humidity, smoke, or other contamination.
•
Determine whether data should be stored at a location separate from the computer
facility and whether you need fireproof data vaults. If you do not have an off-site
facility for data storage, you can arrange for off-site storage through a vendor.
•
Perform random checks of the archives and archived data to make sure that the
procedures for requesting data, the procedures for retrieving data, and the data itself
are in order and functioning properly.