14 Contents
Reversing Roles Between the Primary and
Secondary Virtual Disks
. . . . . . . . . . . . . 209
Promoting the Secondary Virtual Disk or
Demoting the Primary Virtual Disk
. . . . . . . . 210
Suspending a Remote Replication . . . . . . . . 210
Resuming a Remote Replication
. . . . . . . . . 211
About Resumed Remote Replications
. . . . . . 211
Testing Communication Between the Primary
and Secondary Virtual Disks . . . . . . . . . . . 212
Deleting a Virtual Disk From a Replicated Pair
in a Storage Array. . . . . . . . . . . . . . . . . 213
Deleting a Primary Virtual Disk
. . . . . . . . . . 213
Deleting a Secondary Virtual Disk
. . . . . . . . 214
Deleting a Primary Virtual Disk in a
Replicated Pair From a Storage Array . . . . . . 214
Deleting a Secondary Virtual Disk in a
Replicated Pair From a Storage Array . . . . . . 215
Removing a Remote Replication From a
Storage Array
. . . . . . . . . . . . . . . . . . . 215
Deactivating the Remote Replication on the
Storage Array . . . . . . . . . . . . . . . . . . . 216
Disabling the Remote Replication
Premium Feature . . . . . . . . . . . . . . . . . 217
14 Configuration: Device Mapper
Multipath for Linux . . . . . . . . . . . . . . . . 219
Overview . . . . . . . . . . . . . . . . . . . . . . . . 219
Using DM Multipathing Devices
. . . . . . . . . . . . 220
Prerequisites
. . . . . . . . . . . . . . . . . . . 220
Device Mapper Configuration Steps
. . . . . . . 221
Limitations and Known Issues
. . . . . . . . . . . . . 227
Troubleshooting
. . . . . . . . . . . . . . . . . . . . 228
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