PowerPath Problems with Windows 2003 Enterprise 64 bit Edition

Question

Has anyone encountered problems with the above config? When presenting 2 LUNs to a server, only one is seen and Windows device manager shows an error with the PowerPath driver.

Exact Config:
IBM x3850 Server - Quad dual core processors, 16GB Ram
2 x Emulex LP-1150E HBA's - Latest drivers
CX700, Flare Code 16 - Direct Connected (HBA0-SPA0, HBA1-SPB0)

CX700 Shows everything presented fine. Powerpath also shows everything fine. Windows Disk Manager will only see one LUN.

I even had the LUN disappear at one point and the other LUN appear...

When reverting to a single HBA and no Powerpath, both LUNs can be accessed.

Anyone???

dynamox · Answer

can you disable one path to you storage array (to prevent corruption) and uninstall and reinstall PowerPath. I've seen some weird stuff with PowerPath on Windows .where the only way to resolve the problem for me was to remove it, bounce the box and reinstall it.

JCousins-Z0vMY · Answer

I had uninstalled and reinstalled Powerpath several times (tried version 4.5.1 and 4.6.0)...

The only combination that i hadn't tried (which ended up giving a solution last night) was to go down to a single HBA, remove powerpath and have all the luns on the connected SP. I then did the diskpar and format.

Since then (and after re-installing Powerpath), the LUNs seem to have been remembered and things are operational again.

csmykay1 · Answer

J,I would highly recommend you open a case on this issue as what you described does not sound right at all.Regards,Shmac

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PowerPath Problems with Windows 2003 Enterprise 64 bit Edition

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