HP StorageWorks Data Replication Manager HSG80 ACS Version 8.7P Configuration Guide (AA-RPHZF-TE, March 2004)

Configuring the Optional Entry-Level DRM Solutions

150 Data Replication Manager HSG80 ACS Version 8.7P Configuration Guide

Dual-Switch Single-Site Configuration

This configuration, shown in Figure 22, is designed for environments that need only local data

protection in the event of local disaster or that are used as local test beds for operational DRM

solutions. This solution uses only two switches, where each switch creates “a fabric in a box,”

instead of the multiswitch fabrics supported in full DRM solutions.

Note: The maximum separation between host and switch is 500 meters. The maximum separation

between hosts is, therefore, 1000 meters or 1 kilometer.

Figure 22: DRM dual-switch single-site configuration

Because of its design, a DRM dual-switch single-site configuration is limited to supporting

connections equal to one switch. For example, the maximum configuration based on 8 or

16-port switches is any of the following:

■ 8-port switches

— one pair of arrays and up to four servers

■ 16-port switches

— one pair of arrays and up to twelve servers

— two pairs of arrays and up to eight servers

— three pairs of arrays and up to four servers

Larger port count switches are supported with limitations scaled to the increase in port count.

See the DRM Release Notes for a list of supported switches. The limits on the number of

servers are specified in the HP StorageWorks SAN Design Reference Guide.

Host A

Controller

Pair A

Controller

Pair Y

Switch A Switch Y

Host Y

CXO7738A

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