Compaq StorageWorks Data Replication Manager HSG80 ACS Version 8.5P Operations Guide

Configuring a Data Replication Manager Solution 4–3
Figure 4–1 depicts a basic DRM configuration and will be referenced throughout this
chapter.
Figure 4–1. Data Replication Manager basic configuration
Restrictions
It is important to understand the operating restrictions before configuring your Data
Replication Manager solution. Table 4–1 lists the points to consider when proceeding
to the configuration process:
CXO7172A
BuildngBBuildngA
BuildngBBuildngA
Host A Host B
Table 4–1 Restrictions
Restriction Implication
Two HSG80 controller pairs are required. All controllers must run ACS V8.5P.
Four Fibre Channel Switches are required. These switches provide two separate fabrics
connecting controllers at the initiator and target
sites.
HSG80 controller(s) must be configured in
Multiple-Bus Failover mode.
Additional software support required on the host:
For Windows NT, Secure Path V2.2.2
For OpenVMS V7.2-1, Fibre Channel TIMA kit
HSG80 controller(s) must be configured for
Fibre Channel Switched protocol.
Host operating system and adapter must support
Fibre Channel Switched protocol as well.
Mirrored write-back cache must be
enabled.
512 MB cache per controller (256 MB effective
capacity once mirrored)
Maximum of 12 Remote Copy Sets allowed
per HSG80 controller pair.
If more than 12 Remote Copy sets are needed,
additional subsystems are required.