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HP-UX 11.31 and EMC DMX4

Wyeth ADMIN TEAM
Occasional Visitor

HP-UX 11.31 and EMC DMX4

Strange behaviour here with 11.31 and two HBAs with DMX4 LUNs... "ioscan -m dsf" shows a different persistent DSF for every legacy DSF. If we instead present xp24k storage to the same server it shows a single persistent DSF with two legacy DSFs (one for each path to the LUN) as expected.

Is there some special config or parameter setting needed in 11.31 or on the DMX4 to correct this?
2 REPLIES
Steven E. Protter
Exalted Contributor

Re: HP-UX 11.31 and EMC DMX4

Shalom,

I would definitely update 11.31 to the latest bi-annual support release. That is the binary equivalent of a cold install.

I would look at the configuration control program for the EMC for inconsistencies. Your xp24k test shows there is nothing wrong with the hardware on the HP-UX boxes.

I would also make sure the HBA cards on the HP-UX boxes are up to date.

More configuration detail for more and better help.

ioscan output would be particularly helpful.

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Steven E Protter
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Wyeth ADMIN TEAM
Occasional Visitor

Re: HP-UX 11.31 and EMC DMX4

The problem is resolved. It turned out to be that SPC-2 was not set on the FAs during storage masking for this server. Be aware that not setting SPC-2 also caused noticeable performance issues for other 11.31 servers sharing the same set of FAs even if SPC-2 was set properly for those servers.