Analyzing our PI servers' disks indicates that they could use defragmentation (W2K8R2).
Does anyone have any experience with using Microsoft's DEFRAG on a running PI and/or AF server ? These are VMs running under VMWare.
We have following about defragmentation
26144OSI8 - Document how to use defragmentation tools with PI Server
Document how to use defragmentation tools with PI Server
Procedure described in Call 169925 (verify if it is accurate).
case 169925 procedure was following.
1. Create and register a blank archive in another partition
2. Make sure the archive created above is the target of the next shift
3. Force a shift
4. Unregister all archives that reside on the partition to be defragmented
5. Run defrag
6. Re-register the archives
7. (optional) Repeat steps 1, 2 and 3 to move the primary archive back to the defragmented partition
So we have not documented about defragmentation yet. (and we need to check the procedure too)
Though in Japan, some of the customers have done the defragmentation on running PI Data Archive machine without any issues.
Also I found one case that our escalation engineer recommended following (case 134502)
"We recommend shutting PI server down first but there's no known issue of running the defrag utility while the PI server is running."
So if it is possible, it is good to stop PI Server and do defragmentation.
For AF reindex, we have KB.
KB00674 - Reindexing to improve the performance of the SQL Database for PI AF
Open command prompt as administrative previlege.
But this is "OFFLINE" re-index. So when doing reindex, AF is not accessible.
I think it is not related if the environment is VM or not.
I hope it helps,
Retrieving data ...