How do I migrate PI Data Archive to a new server?
How do I migrate PI Data Archive to a new server?
Migrating PI Data Archive involves moving archives, configuration, and reconnecting interfaces. Careful planning minimizes downtime.
Pre-Migration Checklist
- Document current server configuration (PI SMT > General)
- Record all interface configurations and point sources
- Back up all archive files, annotation files, and configuration
- Verify the new server meets hardware requirements
- Plan a maintenance window
Migration Steps
1. Install PI Data Archive on the New Server
Install the same version (or newer) on the target server. Do NOT start the PI services yet.
2. Copy Archives
Copy all .arc and .ann files from the old server to the new server's archive directory:
robocopy D:\PI\arc E:\PI\arc *.arc *.ann /MT:8
3. Copy Configuration
Key files to transfer:
pipc.dat— PI point databasepimsg*.dat— message logspilastgood.dat— last good snapshot values- Security configuration (via PI SMT export)
4. Update Server References
On the new server:
- Register archives using
piartool -ar - Verify point configuration:
piconfigqueries - Test connectivity from client machines
5. Redirect Interfaces
Update all PI interfaces to point to the new server:
- Modify startup parameters (hostname or IP)
- Update PI Buffer Subsystem configuration
- Test data flow to the new server
6. Update Client Connections
Update Known Servers Table (KST) on all client machines or use DNS aliasing:
- DNS alias (recommended) — point the old hostname to the new IP
- PI Connection Manager — update individual client configurations
Preserving Point IDs
If you copy pipc.dat, Point IDs are preserved. This is important for:
- PI Vision displays that reference points by ID
- Custom applications using point IDs
- PI DataLink configurations
Validation
After migration, verify:
- All tags are receiving new data (check snapshot timestamps)
- Historical data is accessible (query archives from before migration)
- All interfaces are connected and buffering is clear
- PI Vision displays render correctly
- AF Server can connect to the new PI Data Archive
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