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Windows 2000 local disk writes are not showing on disk until hours later

Posted on 2011-09-22
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Last Modified: 2012-08-14
I have a virtual Windows 2000 SP4 machine running on a Vmware VSphere 4.1 host. The VM itself runs several FoxPro custom application which writes to the local disks. Very rarely (about once every 4-6 months) one FoxPro application will write to the disk but the others will not be able to see the new data until several hours later.

My Developer collegue is convinced the problem is VMware or the conversion from physical to virtual (using Vmware's P2V convertor tool) as we never had this issue on a physical box.

I wouldn't rule out the issue is Windows 2000 related. Possibly disk cache or something similar.
The VM is Version 4
BusLogic Parallel SCSI controllers

Hopefully somone can offer some suggestions on a fix or even a hint on how to troubleshoot or reproduce the problem.
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Question by:netadminsge
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Andrew Hancock (VMware vExpert / EE MVE^2) earned 2000 total points
ID: 36584564
Have you thought about changing the controller from a BusLogic Parallel SCSI controllers to a LSI Logic Parallel?

This is the procedure

http://powertoe.wordpress.com/2009/12/28/migrating-a-vm-scsi-controller-from-bus-logic-to-lsi-logic/

We always converted our VMs to use the LSI Logic, because it performs better.
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Author Comment

by:netadminsge
ID: 36584739
Thanks for the comment.

I have suggested this myself as a possible step. Is there a risk of data lose or corruption?
I'll give your link a read.

Any more suggestions from anyone else?
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LVL 123
ID: 36586124
No there is no risk of data lose or corruption, but I would always recommend a Backup before any modification to any production VM.

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Author Comment

by:netadminsge
ID: 36602431
I've managed to succesfully change the SCSI controller to LSI Logic. Since this issue takes months to reoccur it will be hard to determine if it did actually fix the issue or not. As their was not other suggestions, points go to hanccocka.

 
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