HP NonStop G-Series - Manual (Page 23)

HP AutoSYNC User’s Guide–522580-016
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AutoSYNC Overview
Introduction
HP NonStop AutoSYNC software (AutoSYNC) provides automatic synchronization for
HP NonStop server disk files.
File synchronization is a complementary alternative to data replication for disaster
recovery. Data replication is used primarily for database files; it replicates each record
update that occurs in a database transaction. Instead of capturing and replicating each
small change to a file, synchronization performs a periodic analysis and copies files
that have been added or changed to the configured destination location.
File synchronization is also useful for a distributed system when certain files, such as
application object files, should be the same on every system in the network.
Although synchronization operations could be performed by operators using ad-hoc,
manual, or semi-automated methods, AutoSYNC provides a number of significant
features:
•
AutoSYNC is automatic; once configured, it maintains synchronization without
operator intervention.
•
AutoSYNC is fault-tolerant; it maintains synchronization despite cpu or process
failures.
•
AutoSYNC is manageable; all synchronization activities can be configured and
displayed with a single interface.
•
AutoSYNC is integrated; it logs all synchronization errors to EMS or the reporting
facility of your choice.
•
AutoSYNC is efficient and scalable; it uses network bandwidth and processors
efficiently and has controls to prevent any adverse impact to production
applications.
•
AutoSYNC is secure; many users may configure synchronizations, but each user
may access only files permitted by their user ID’s access rights. It does this without
being privileged.
•
AutoSYNC maintains an historical record of all synchronization activity.
•
AutoSYNC eliminates common synchronization problems; it deals with remote
security and ownership issues to ensure that files are properly secured, but can
continue to be synchronized.