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Issue:
During a Side‑by‑Side (SBS) upgrade, the ION_Network database upgrade may stop immediately with:
“Insufficient disk space”
This can occur even when the server has plenty of free space.
Product Line:
Power Monitoring Expert 9.0
Power Monitoring Expert 2020
Power Monitoring Expert 2021
Power Monitoring Expert 2022
Power Monitoring Expert 2023
Power Monitoring Expert 2024
Environment:
PME Upgrade
Cause:
The failure is triggered by one of the following conditions:
-
Actual disk or tempdb space limitations
SQL Server requires significant temporary working space during schema transitions. If the drive hosting ION_Network or tempdb is constrained, the upgrade will terminate with this message. -
Unexpected objects in ION_Network
SBS upgrades require a clean database schema.
If the database contains leftover or custom objects, the upgrade validator fails immediately.
A known example is the presence of an unexpected table, such as:ION_Network.dbo.SchedulerTick
Resolution:
-
Verify and increase disk space
Ensure sufficient free space on the disks containing:- ION_Network.mdf / .ldf
- tempdb.mdf / .ldf
-
Remove invalid SchedulerTick table (if present)
Delete the unexpected table using SQL Server Management Studio and run this:DROP TABLE [ION_Network].[dbo].[SchedulerTick];
Then re-run the upgrade.
Recommendation:
If you are using an older version of PME, consider upgrading to the latest version for improved protocol support and security. For assistance with integration or upgrades, contact Schneider Electric Technical Support at: pmo-psup@se.com
