Aborting The Active Upgrade Process - NEC NovaScale R630 User Manual

TIPS:
•
"Aborting the Active Upgrade Process" on page 5-68
•
"Active Upgrade State Model" on page 5-69
•
"Software Upgrade Support" on page 5-71
•
"Prerequisites" on page 5-72

Aborting the Active Upgrade Process

Aborting the Active Upgrade process stops the current upgrade session and returns your system to its original state. If
necessary, you can abort the Active Upgrade process at any point up until you commit the upgrade.
If you abort the upgrade session while the system is in split mode, no downtime is incurred. Your applications continue
to run on the Production Side while the Active Upgrade console restores the system to duplex mode.
If you abort the upgrade session while the system is in merge mode, a short period of downtime is incurred while the
Active Upgrade console initiates a system restart. The Active Upgrade console shuts down the Upgrade Side and
restarts the system from the Production Side, which automatically restarts your applications from the Production Side.
The period of downtime is only as long as it takes your system and applications to restart.
In either case, the abort process uses RDR resynchronization to restore the internal disks to their original state by
overwriting the unwanted Upgrade Side system disk and stale Upgrade Side data disks with their original partner disks
(Figure 5- 4).
Figure 5- 5. Aborting the Upgrade
After you abort the Active Upgrade process, you can start another Active Upgrade session as soon as the RDR disk
resynchronization is complete.
TIPS:
•
"Active Upgrade State Model" on page 5-69
•
"Active Upgrade Process" on page 5-65
•
"Software Upgrade Support" on page 5-71
•
"Prerequisites" on page 5-72
5-68