From: Mani, Chandrashekar (Chandrashekar.Mani@astrazeneca.com)
Date: Tue Jul 30 2002 - 14:14:54 EDT
Another response from Ilan green...
I would like to add - you would like to increase the IO timeout to 180
(pvchange)
disable lvm bad block relocation for all devices configured
Consider increasing scsi queue depth .
Don't forget alternate links if you don't have power path
Chandrashekar Mani
> -----Original Message-----
> From: Mani, Chandrashekar
> Sent: Tuesday, July 30, 2002 1:39 PM
> To: 'hpux-admin@dutchworks.nl'
> Subject: [HPADM] EMC and Fibre information - Summary
>
> Hi!
>
> I got only one answer for the below question.The response was
> from Alan.
>
> Question: I have worked on the EMC/Fibre products on the Sun systems. I
> need some docs/informations on how the EMC/fibre works on the HP
> systems.Basically,like which is the file on hp systems where the world
> wide node number is changed? How the HBA's are configured? How the LUN
> zonings are done on HP-UX? etc...
>
> Answer:EMC on HP systems is a little simpler than SUN, actually, though it
> might take a little while for you to get used to the difference. The
> biggest differences are:
>
> On HP it is not necessary to explicitly allow the discovery of
> published LUNs (no analog to sd.conf)
> HP uses volume set addressing, which means that only 8 LUNs can get
> published to a target. The practical effect of this is that when you look
> at a device listing it will appear as if the target ID increments for
> every
> 89 volumes: . . . c3t3d6 c3t3d7 c3t4d0 . . .
> No reboot should ever be required to discover newly published
> hypers--simply do an ioscan and then use insf to build the device files.
>
> As to your specific questions:
> There is no configuration file which stores the WWN of an HBA. You
> can find the WWN either with fcmsutil or through [xcm]stm. I don't
> believe
> it is possible to change the WWN of an HBA.
> HBA's are configured/enabled/etc through the catch-all command
> fcmsutil.
> LUN access, assuming you have a Symmetrix, is still controlled
> through Volume Logix. This can be done from the command line with the
> Volume Logix software, or through the ESN Manager GUI (which can only run
> on
> a Sun or NT management station).
> Zoning can be done from the command line with the FibreZone
> software. Or, as with VolumeLogix) it can be handled through ESN.
> Personally, I use ESN to consolidate all SAN management into a single
> interface -- but then I violate that principle by controlling all
> Timefinder
> (BCV) operations locally on the servers.
>
>
>
> Alan Riggs
> Lead Systems Administrator
> Tyco Safety Products
> Boca Raton, Fl
> (561)912-6182
> alanriggs@tycoint.com
>
> Thanks,
>
> Chandra
>
>
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