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тАО01-30-2010 10:02 PM
тАО01-30-2010 10:02 PM
Please give me some idea from SAN side what should I consider here...
eg
for SAN BOOT is there any special configuration needed from EVA or SAN switch side ?
because of multipath concept, according to my knowledge from the server side it should display more than 1 HDD after presents the vdisk to the server. How is this involve with SAN boot concept ?
Solved! Go to Solution.
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тАО01-30-2010 11:57 PM
тАО01-30-2010 11:57 PM
Re: SAN boot (EVA6400 )for OpenVMS
You shouldn't need to do anything special on the EVA or SAN switch to support booting from SAN. The only thing you will need to do is to ensure that the OS Unit ID is set for each Vdisk that is presented. This is mandatory for all LUNs presented to an OpenVMS box, regardless of whether they're are used for SAN boot.
On the server side, if you're using Alpha servers then you need to run wwidmgr to set up the boot disks. Itanium boxes are a bit different, and I've not used on of those in a while, so I'm sure someone else will chip in with the details.
Cheers,
Rob
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тАО01-31-2010 01:52 AM
тАО01-31-2010 01:52 AM
Re: SAN boot (EVA6400 )for OpenVMS
c01849072 - ADVISORY: HP StorageWorks Command View EVA software refresh clears virtual disk operating system unit ID in user interface
http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?lang=en&cc=us&objectID=c0184907
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тАО01-31-2010 08:11 AM
тАО01-31-2010 08:11 AM
Re: SAN boot (EVA6400 )for OpenVMS
thanks
Servers are rx6600. Still I don't know which version of OpenVMS is going to installed. may be 8.3
Still I want to clear out following parts.
1.) Normally when I present luns to windows or linux I use multipath software to visible LUNs as one unit in OS side.
Like wise are we used same kind of concept in OpenVMS also? What is the software need to do that? (After OS installed)
2.) I don't have any previous experience on SAN (EVA) boot for any OS .In this case how is the multipart concept involve here?
I believe in server side (below the OS level) there should have more than a disk for single LUN (due to multipath concept).
So which disk are we going to install OS there? Please give me more hints for that.
Hi Uwe, the link you just posted doesn't get any documents
Thanks
Dhananjaya
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тАО01-31-2010 08:27 AM
тАО01-31-2010 08:27 AM
SolutionThe console subsystem on Alpha / Integrity can configure multiple paths and at least on Alpha (I'm sure it looks similar on Integrity) you can pre-configure all possible paths for booting.
The EVA-6400 is an active/active disk array, so you can boot from any path.
If you boot from the DVD for installation you are presented with a single multipathed device named $1$DGAu: where "u" is the OS UNIT ID you have assigned on the virtual disk's properties page, [presentation] tab. used for booting. Last time I checked, "0" could not be used for OpenVMS as it means 'do not supply an OS Unit ID'.
It's been some time since I installed OpenVMS on Integrity, but the DVD used to have a DCL procedure which helped to configure the boot paths:
run the procedure and enter the OpenVMS device name, e.g. $1$DGA100: - the procedure enters all paths to the boot configuration.
Sorry, cut&paste error:
http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?lang=en&cc=us&objectID=c01849072
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тАО01-31-2010 08:34 PM
тАО01-31-2010 08:34 PM
Re: SAN boot (EVA6400 )for OpenVMS
I imagine you'll want to install 8.3-1H1.
I'm curious, will the two hosts be clustered? Will they share a system disk? Will the system disk(s) be shadowed (OpenVMS Host-Based Volume Shadowing)?
Uwe's right, there is a procedure in the installation for adding and validating boot options. You can also run that procedure directly at the DCL prompt at any time. ($ @SYS$MANAGER:BOOT_OPTIONS.COM)
See pages 57-58 & 70-71 of the 8.3-1H1 Upgrade and Installation Manual - ftp://ftp.hp.com/pub/openvms/doc/BA322-90077.PDF. See also Appendix D for more detail about configuring and booting Fibre Channel disks specifically.