|
Ok, I'll admit that I was never shown the prices for the fiber tape
library, switches, cards, etc. But if they're even close, why would
one order SAS over FC? I gotta believe that using fewer ports has to
have a significant factor in reducing costs. Especially with Power
8's being extremely limited on expansion slots for now.
Sure, adding a switch in there will increase some knowledge needed.
But it will help to reduce the complexity of having to flop devices
around, varying on/off, etc.
Rob Berendt
--
IBM Certified System Administrator - IBM i 6.1 Group Dekko Dept 1600
Mail to: 2505 Dekko Drive
Garrett, IN 46738
Ship to: Dock 108
6928N 400E
Kendallville, IN 46755
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From: Roberto José Etcheverry Romero <yggdrasil.raiker@xxxxxxxxx>
To: Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxx>
Date: 09/25/2014 08:04 AM
Subject: Re: Virtualizing Tape VIOS vs IBM 1
Sent by: "MIDRANGE-L" <midrange-l-bounces@xxxxxxxxxxxx>
Rob, i believe you did but you were talking about NPIV IIRC. In this
case we are both asking about SAS ports which are not as nice as FC
(Worst part?
in my case the machine HAS 2 DualPort 8G HBAs but no FC switch so i
cant do NPIV even if the tape library had FC).
Roberto
On Thu, Sep 25, 2014 at 8:26 AM, <rob@xxxxxxxxx> wrote:
It's better than that. I use the same port from multiple lpars atis
the same time! Yes, I have had three lpars doing saves
simultaneously out that same port, virtualized from vios, at the
same time and got better performance than each lpar having their own fiber card back on Power 6.
Didn't I already post this?
Rob Berendt
--
IBM Certified System Administrator - IBM i 6.1 Group Dekko Dept 1600
Mail to: 2505 Dekko Drive
Garrett, IN 46738
Ship to: Dock 108
6928N 400E
Kendallville, IN 46755
http://www.dekko.com
From: Kirk Goins <kirkgoins@xxxxxxxxx>
To: Midrange-L <midrange-l@xxxxxxxxxxxx>
Date: 09/24/2014 07:48 PM
Subject: Virtualizing Tape VIOS vs IBM 1
Sent by: "MIDRANGE-L" <midrange-l-bounces@xxxxxxxxxxxx>
When hosting IBM i on IBM i I can place the SAS physical adapter in
the Host and using vSCSI adatpers I can setup it up and all you have
to do
Vary the Drive Off in 1 partition and Vary on in the other. I havedone
done this with a single drive on a single card.
Works Great and no HMC to mess with to move the tape drive.
With Power8 unless you buy something bigger than an 8core you have
very limited cards slots. I would really like to use a single SAS
card with multiple ports in different partitions at the same time.
Can this be
in VIOS and/or IBM I?Partition
Example1: SAS Tape Card assigned to VIOS and Use Port1 for IBM i
A while using Port 2 for IBM i Partition B?list
Example2: Same as #1 but IBM i is the Host?
--
Kirk
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