Craig's comment:
" It works on the VA's because all the LUNs are seen down both paths."
Gave me a flashback memory which I'll indulge on a Friday afternoon. . .
HAFO could work on any SCSI Disk device where you can see LUNs on more than one port (really all the smarts are in the scsi_disk_and_array_dm (I still have muscle memory to type the in one try!) code which was used for all SCSI disks except the oldest SE devices). Original HAFO was with XP256 F/W SCSI but that was a pretty clunky device even when it was "state of the art". HAFO really didn't become useable until FC. I lead the FC based effort and we did all of our work on XP and then VA devices because they were what worked at the time; those are the configurations that were officially supported, blessed, and used successfully by many customers. We did evaluate EVA products and they did "work" as disks but they didn't have this "LUNs visible on more than one path" feature until way too late for lab development and certification. Probably would work on EMC though our co-development/marketing agreement with them had terminated by the time HAFO was developed -- they did continue to advertize support for MPE/iX systems long after we stopped working with them. YMMV.
Best of luck,
Jim
I've notice that more stuff seems to be "findable" in the HP Business Support Center. (see below).
www.hp.com/go/bizsupport:
Search "MPE HAFO"
Gives many including:
"support matrix"
http://h20000.www2.hp.com/bc/docs/support/SupportManual/c01688251/c01688251.pdf
"communicator"
http://h20000.www2.hp.com/bc/docs/support/SupportManual/c01711744/c01711744.pdf
"Product manual"
http://h20000.www2.hp.com/bc/docs/support/SupportManual/c01711866/c01711866.pdf
Old Jazz article, worth reading if you're new to FC.
http://h20000.www2.hp.com/bc/docs/support/SupportManual/c01711862/c01711862.pdf
-----Original Message-----
From: HP-3000 Systems Discussion [mailto:[log in to unmask]] On Behalf Of Craig Lalley
Sent: Thursday, January 20, 2011 7:53 PM
To: [log in to unmask]
Subject: Re: [HP3000-L] "Must have" patches for new 7.5PP5 system?
Mark,
Yes MPE can HAFO.
What I do is configure all the odd luns down one path and all the even luns down the second path.
Then SYSGEN IO HA (or is it SYSGEN HA...) and then create the secondary path.
It works on the VA's because all the LUNs are seen down both paths.
-Craig
--- On Thu, 1/20/11, Mark Landin <[log in to unmask]> wrote:
From: Mark Landin <[log in to unmask]>
Subject: Re: "Must have" patches for new 7.5PP5 system?
To: [log in to unmask]
Date: Thursday, January 20, 2011, 7:43 AM
On Thu, Jan 20, 2011 at 9:11 AM, Jack Connor <[log in to unmask]>wrote:
> Hi Mark,
>
> I'm assuming the fiber cards are the A6795A 1/2 Gb cards? I once spent
> entirely too much time trying to get the 1gig cards to work.
>
Yes.
>
> Do you have an HPUX or Windows box with Command View set up to monitor the
> VA? It's very advisable as you can do a lot of drill down if you have
> problems and all remote to the system.
>
> Did you configure HAFO?
>
>
Didn't know MPE could HAFO. We have multiple CONFIG groups so we can run all
LDEV's off just one path if we need to. Is there more that MPE can do in
that area? (I'm used to HP-UX LVM where the failover is automatic and
transparent..)
> You may want to offload the CIO nic with a standalone 100Bt card and leave
> your DTC on the CIO.
>
> That's about all I can think of...I think you'll like the new architecture!
>
> jack
>
> -----Original Message-----
> From: HP-3000 Systems Discussion [mailto:[log in to unmask]] On Behalf
> Of Mark Landin
> Sent: Thursday, January 20, 2011 9:58 AM
> To: [log in to unmask]
> Subject: [HP3000-L] "Must have" patches for new 7.5PP5 system?
>
> We have just stood up a new A-class 2-way running 7.5 PP5. This is our
> first
> 7.5 system ... our two other machines are still on 6.5.
>
> This system is configged with 4GB RAM, a VA7410 running off of two PCI FC
> HBA's, 1 DTC 16, and two SureStore DDS-2 tape drives running off the LVD
> SCSI interface.
>
> SUBSYS products consist of NS, COBOL, and FORTRAN. We aren't using ALLBASE.
> We do use FTP, incoming and outgoing. We will probably starting using
> Sendmail for a few things (as an old UNIX admin, I respect Sendmail, but do
> not fear it!)
>
> Primary use for this system is MANMAN with around 170 users.
>
> Our 3rd party portfolio is the usual: Suprtool, MPEX, Minisoft ODBC, and
> Adager, plus some other odds and ends.
>
> So, for this kind of system, what are the "must have" patches that we
> should
> install on top of PP5?
>
>
>
> --
> "He's old enough to know what's right and young enough not to choose it.
> He's strong enough to win the world and weak enough to lose it." - Neal
> Peart
>
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