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Current state of multipathing on Enterprise Linux

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Adam Garsha
Valued Contributor

Current state of multipathing on Enterprise Linux

What do folks use these days for multipathing on Linux against HP EVA storage arrays?
5 REPLIES
Angus Crome
Honored Contributor

Re: Current state of multipathing on Enterprise Linux

I'm pretty sure EMC's powerpath will perform against an EVA, but don't know of anyone who is actually using it that way.
There are 10 types of people in the world, those who understand binary and those who don't - Author Unknown
Steven E. Protter
Exalted Contributor

Re: Current state of multipathing on Enterprise Linux

Shalom,

The OS itself will handle multi-pathing without an add in product. Advanced features that powerpath offers such as load balancing will not be present.

Based on actual experience with Red Hat 4 update 4.

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Steven E Protter
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Uwe Zessin
Honored Contributor

Re: Current state of multipathing on Enterprise Linux

We use the embedded failover in the QLogic driver. Last time I checked, the device mapper was not considered mission critical quality by HP.
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Rob Leadbeater
Honored Contributor

Re: Current state of multipathing on Enterprise Linux

Hi Adam,

The HP drivers for the QLogic cards work fine on Linux. There's nothing too fancy, just basic failover on a path failure, but they work. Not sure how they fair on newer Active/Active EVAs though.

I've had production systems running RHEL2.1 and 3.0 with these drivers, and apart from one installation glitch, had no problems.

Regards,

Rob
Colin Topliss
Esteemed Contributor
Solution

Re: Current state of multipathing on Enterprise Linux

Have a look at the following link:
http://www.novell.com/documentation/sles10/index.html?page=/documentation/sles10/stor_evms/data/b4qbr1x.html

It explains about the multipathing available out of the box with SUSE Linux. It works well (but there is an issue if you want to use it with ServiceGuard - SG doesn't like using a multipath device as a lock LUN).

Regards

Colin