Re: P520 HBA & DS4100
From: jeff barratt-mccartney (jbarratt_at_COMPSAT.COM)
Date: 05/19/05
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Date: Thu, 19 May 2005 14:57:18 -0400 To: aix-l@Princeton.EDU
as has been stated before as an FYI:
you can not run SDD and RDAC drivers over the same set of HBAs
-----Original Message-----
From: IBM AIX Discussion List [mailto:aix-l@Princeton.EDU]On Behalf Of
Lamar Saxon
Sent: Thursday, May 19, 2005 2:41 PM
To: aix-l@Princeton.EDU
Subject: Re: P520 HBA & DS4100
Thanks. Did not know that since have ESS. We will be connecting to a
FastT shortly at our DR site so this is nice to know.
Lamar
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From: IBM AIX Discussion List [mailto:aix-l@Princeton.EDU] On Behalf Of
jeff barratt-mccartney
Sent: Thursday, May 19, 2005 1:21 PM
To: aix-l@Princeton.EDU
Subject: Re: P520 HBA & DS4100
ds4x00 uses RDAC. you will not see multiple paths, as RDAC is an
active/passive failover driver. you can see that it is functioning properly
with
fget_config -a
-----Original Message-----
From: IBM AIX Discussion List [mailto:aix-l@Princeton.EDU]On Behalf Of
Lamar Saxon
Sent: Thursday, May 19, 2005 10:58 AM
To: aix-l@Princeton.EDU
Subject: Re: P520 HBA & DS4100
You might want to look here:
http://www-1.ibm.com/servers/storage/support/allproducts/installing.html
Especially for SDD or MPIO discussions. Each path to the LUN will be
represented as a hdisk. You will need something like SDD to see a VPATH
that represents the single physical lun represented by the logical paths.
Lamar
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From: IBM AIX Discussion List [mailto:aix-l@Princeton.EDU] On Behalf Of
Ayman Rayyan
Sent: Thursday, May 19, 2005 8:43 AM
To: aix-l@Princeton.EDU
Subject: P520 HBA & DS4100
Hi Admins:
I have the following case:
I have one P520 with AIX V5.3, it has 2 HBA connected to 2 controller
(controller A & controller B) of the DS4100, the problem is that each LUN on
the DS4100 appear as 2 physical volume (ex. Hdisk2 & hdisk3) instead of one.
Any advice will be appreciate.
Thanks & Regards
_______________________________________________
Ayman Rayyan
Senior System Engineer
STS Group , Amman-Jordan
Tel: +962 6 5802626
Fax: +962 6 5829213
Ayman.Rayyan@sts.com.jo
http://www.sts.com.jo
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