NEC 320Fc - Manual (Page 33)

Pre-Upgrade Tasks
Preparing for the Active Upgrade Process 2-11
Figure 2-1. Windows Firewall Exceptions
Related Topics
•
“Pre-Upgrade Tasks” on page 2-7
•
Configuring the Active Upgrade Process
Configuring a UPS-Protected System for the Active Upgrade Process
If your system is protected by a UPS, and you have configured the UPS power
connections as specified in the Express5800/320Fc: Site Planning Guide, it is best to
ensure that the CPU- I
⁄ O enclosure with A-side, UPS-protected power (CPU
enclosure 0, I/O enclosure 10) are Primary before starting the Active Upgrade
process.
When you initiate the upgrade process and split the system, the primary (active)
CPU- I
⁄ O enclosure becomes the Production Side of the system. Because the
Production Side controls the upgrade session for most of the Active Upgrade process,
and also contains the most current version of your data disks during the upgrade
process, allowing the Production Side to run on UPS power provides better protection
for your system should power fail during an upgrade.