Owner's manual

Switchovers
ServerNet Nomadic Disk User’s Guide—425485-001
5-6
On Backup Node \BCK
On Backup Node \BCK
1. If you are not using the Nomadic Disk Manager:
a. Change the fiber-optic switches at the backup node to the opposite position as
described in Moving the Fiber Optic Switches to the Opposite Position
on
page 5-4.
b. Use the SWCI STATUS command to verify that switch modules are in the
correct position.
SWCI $SWITCH1.#PRI> STATUS
c. Use the SCF START DISK command to start the nomadic volumes that were
switched from the primary node.
-> START DISK $nomadicvol, $nomadicvol
2. If you are using the Nomadic Disk Manager:
a. At a TACL prompt, log on to \BCK as the super ID and start the Nomadic Disk
Manager.
> NOMADIC
b. Use the TAKE command to assume ownership of the Nomadic volumes from
\PRI.
1 ND> TAKE DATA
c. Wait for the TAKE command to finish.
3. Start applications that access data on the Nomadic volumes.
4. Notify Network Services the applications are ready for processing.
5. Network Services finishes switchover of incoming transactions and normal
processing resumes.