HP StorageWorks XP Remote Web Console Software - Manual (Page 174)

1. Allow direct control of the host impact metrics using a methodology called Load Balancing.
Load balancing allows management of the thresholds for inducing host delay and for the
degree of induced delay.
2. Use XP Business Copy to provide a tertiary Point-in-Time (PiT) copy in support of the DR/BC
requirements. The PiT copy may be manually controlled at specified times or be automated
on a continuing interval basis using XP RAID Manager. With this practice, the induced host
delay may be minimized, and in some cases, removed without impacting a DR/BC solution.
This solution allows the tertiary copy to be used for testing and/or backup.
3. Use XP Continuous Access Asynchronous as a data replication application only. All induced
delay may be removed at user discretion. The DR/BC solution will remain usable as long as
the sustained write update rate and the ability of the network to service the write updates does
not over-commit the availability of cache/sidefile. Suspension of the remote copy environment
in this configuration is probable and upon write update demand and network capability.
174 XP Continuous Access Load Balancing and Sidefile Management and Control