Owner's manual

Switchovers
ServerNet Nomadic Disk User’s Guide—425485-001
5-9
On the Primary Node \PRI
On the Primary Node \PRI
1. Change the switches.
•
If not using the Nomadic Disk Manager:
a. Use the SWCI STATUS command to verify that switch modules are in the
correct position.
SWCI $SWITCH1.#PRI> STATUS
b. Use the SCF START DISK command to start the nomadic volumes that
were switched from the primary node.
-> START DISK $nomadicvol, $nomadicvol
•
If using the Nomadic Disk Manager:
a. Request that Network Services to perform the network switchover to the
primary node, \PRI.
b. Log on as the super ID and starts the Nomadic Disk Manager at a TACL
prompt.
> NOMADIC
c. Use the TAKE command to take the ownership of the Nomadic volume
from \BCK.
1 ND> TAKE DATA
After the TAKE command finishes, the mirror disk drives are automatically
started on \PRI.
d. If the primary drives are stopped (as in this example), use SCF to revive the
primary drives to reflect the state of the mirror drives.
> SCF START DISK $NomadicVol
2. Restart the applications that access data on Nomadic volumes.
When all drives at the primary node have been completely revived, normal
processing resumes.
3. Notify Network Services that the applications are ready for processing.
4. Network Services finishes switchover of incoming transactions and normal
processing resumes.