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vmware ESX4 + Emulex FC HBA + HP Storageworks EVA 8000 + linux operating system: low performance???

Posted on 2010-09-10
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Last Modified: 2012-05-10
Hi All,

We currently use the following configuration:

- ESX4 hosts on DELL R710 / DELL R900
- Emulex LP1050 FC cards
- HP Storageworks EVA 8000 2C2D configuration, incl. 24*300 GB FC-SCSI 10krpm discs
- Debian GNU/Linux 64 bit operating systems as guests

And, we discovered, some times the i/o of linux hosts are so slow, means 1Mbyte/sec! It seems, the storage is working well, no high loads detected.
Any idea?
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Question by:Cook77
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by:David
ID: 33647613
There literally could be so many places where you have problems, from switch configuration, poor cabling, inefficient queue settings, topology constraints, RAID configuration, saturation within the EVA, ...
Kind of difficult to even begin, so a good place to start is to get yourself into a situation where you can eliminate variables and standardize things.

Like can you set up a simple controlled benchmark (like bonnie) on one machine and shut down all the other virtual machines to establish a baseline. Then see if the EVA is properly configured to begin with.
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