Advice on contingency plan for DAS array with separate local WAL drives

Recently migrated to a shiny new 8.4.4 postgres instance....data stored on attached storage array. Transaction logs stored on 2 local mirrored drives (local to the database server itself) for best performance.

While we are replicating (using slony) to our DR site, our first-choice plan (in the event of an issue simply with the database server itself) was to disconnect the SAS cables from it (connected to the DAS) and connect them to a 'similar' box we have on standby. With the WAL logs physically on the drives of the original database server, this obviously becomes an issue.

What is recommended in terms of prep/switchover in this instance? Should we be rsyncing or using built-in wal-log shipping of these transaction logs to our stand-by server? Simply pop out these drives and hand-move them to the standby-server? (assuming they are not the issue in the first place)

Any thoughts would be appreciated.