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Super slow SAN through HBA

 
Martin Dessenne
Occasional Visitor

Super slow SAN through HBA

After migration from P-blades to C-blades we have a very strong performance problem.
I/O RW 2MB/sec !!!
All drivers and firmware are up to date.
We have a complex infrastructure with diffrent HP hardware and qlogic controllers.
After rolback the migration the problem still occures.
Only after a shutdown of multiple (VM)-servers, the problem will be defused.

Does anybody know this problem?
2 REPLIES 2
Bill_Weir
Occasional Visitor

Re: Super slow SAN through HBA

Maybe stating the obvious but...
Have you checked everything (HBAs switch ports etc) have their speed & port type hard set rather than leaving them at auto?
Martin Dessenne
Occasional Visitor

Re: Super slow SAN through HBA

Hi Bill,
yes, all options are on fixed values.