From: Adams Kevin J (kevin.adams@PHS.COM)
Date: Fri Feb 21 2003 - 17:51:47 EST
BV,
I have not done this, but I have given it thought, and I would go with
assigning each LUN to an individual adapter via ESS configuration and then
LVM mirroring.
SDD should not want to manage the boot LUNS as there is only one of each?
Without SDD managing the boot drives, would ESS maint in concurrent mode be
an issue?
Did you build the system this way initially, or after the fact.
We have a couple of H80s with non-hot swappable boot disks that have
required downtime to fix. Booting off the attached F20 would solve that
problem.
Kevin Adams
-----Original Message-----
From: Bill Verzal [mailto:Bill_Verzal@BCBSIL.COM]
Sent: Friday, February 21, 2003 1:39 PM
To: aix-l@Princeton.EDU
Subject: [aix-l] SAN Boot question
Hi *,
I've managed to boot my P670 off the SAN. I have a P670 connected via a
SINGLE 6228 FC adapter, across a SINGLE FABRIC, connected to a model F20
Shark.
Now the question: What happens when I go DUAL FABRIC? How do you boot
from the Subsystem Device Driver ? Anyone done this ?
Or rather than using the SDD, do I instead carve 2 LUNs, install 2 FC
adapters in the P670, attach one to each fabric, and then assign each
separate LUN to the individual adapter. Then I can do LVM mirroring.
This way, I am protected from a fabric outage, FC adapter outage, and by
using the Shark, I am protected from a disk crash.
Has anyone done this ? Or is this just overly complex ?
BV
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