NEC Express5800/320Ma Guide de l'utilisateur télécharger pdf (Page 19)

Overview of the Active Upgrade Process

Overview 1-7

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 1-4).

Figure 1-5. Aborting the Upgrade

After you abort the upgrade process, you can start another upgrade session as soon

as the RDR disk resynchronization is complete.

Related Topics

• “Active Upgrade State Model”

• “Overview of the Active Upgrade Process” on page 1-2

• “Active Upgrade State Model” on page 1-9

• “Software Upgrade Support” on page 2-1

• “System Prerequisites” on page 2-2

Network

External

Storage

Duplexed SystemConsole

duet006

Internal Storage

Data

(Old System) (Current Data)

Remirror

with RDR

(Upgraded)

(Old Data)

System

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NEC Express5800/320Ma Guide de l'utilisateur Page 19