NEC 320Fc - Manual (Page 73)

Splitting the System
Performing the Upgrade 4-3
Related Topics
•
“System Prerequisites” on page 2-2
• “Splitting the System”
• “Viewing Active Upgrade Process Status” on page 4-21
• “Saving the Activity Log to a File” on page 5-1
•
“Aborting the Upgrade” on page 4-19
•
Troubleshooting
Splitting the System
Splitting an Express5800/320Fc system divides it into two independently-functioning
systems: the Production Side, which continues to run your applications, and the
Upgrade Side, which you can safely upgrade.
Splitting the system:
• Disables RDR mirroring between the internal disks in each CPU- I
⁄ O enclosure.
• Isolates the Upgrade Side from system resources such as the network, any
user-specified application data disks, and any external PCI resources.
• Disables any user-specified applications and services on the Upgrade Side so they
cannot restart if you restart the operating system on the Upgrade Side.
•
Queues any ActiveService Network alerts generated on the Upgrade Side until the
system is merged.
You can split a system only if it meets the prerequisites for the Active Upgrade process
and has passed the readiness check .
N O T E S
1. When in split mode, the Upgrade Side has no access
to the network. If you need a network resource to
obtain any software installation packages you intend
to run, transfer the software to the system before you
initiate split mode. Furthermore, put the software on
one of the system disks, because these are the only
disks you can access on the Upgrade Side while the
system is in split mode.