More on Multipathing

A reader asked if Solaris native multipathing can do multiple types of multipath/failover simultaneously, allowing connection to multiple types of storage arrays at the same time. The answer is definitely YES.

This highlights another reason why operating systems need to include multipath for block storage. Compute servers connect into networks with a variety of storage, from a variety of vendors. One driver stack, and one set of HBAs has to talk to all of them. The old model of one type of HBA, with one type of driver, for each storage array doesn't work any more than you can have a different NIC for each type of Web server you connect to on the Internet.

Comments:

I looked at STMS docs and looks like it only supports multipathing for active/active arrays and active/passive arrays from Sun. No support for active/passive arrays from EMC, HDS etc. Can you please clarify this

Posted by Seby on May 19, 2005 at 02:03 AM PDT #

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