Hi, To answer you question on why to use IBM RDAC, There is no need for dm-multipath at all. Easy enough to re-install later. Regards, Amitesh Sahay Technical Support Assciate (MphasiS an HP company) -----Original Message----- From: redhat-list-request <redhat-list-request@xxxxxxxxxx> To: redhat-list <redhat-list@xxxxxxxxxx> Sent: Tue, Jul 20, 2010 9:31 pm Subject: redhat-list Digest, Vol 77, Issue 18 Send redhat-list mailing list submissions to redhat-list@xxxxxxxxxx To subscribe or unsubscribe via the World Wide Web, visit https://www.redhat.com/mailman/listinfo/redhat-list or, via email, send a message with subject or body 'help' to redhat-list-request@xxxxxxxxxx You can reach the person managing the list at redhat-list-owner@xxxxxxxxxx When replying, please edit your Subject line so it is more specific than "Re: Contents of redhat-list digest..." Today's Topics: 1. IBM DS4700 and RDAC (Wahyu Darmawan) 2. RE: IBM DS4700 and RDAC (Wahyu Darmawan) 3. Re: IBM DS4700 and RDAC (Marti, Robert) 4. Re: IBM DS4700 and RDAC (Georgios Magklaras) ---------------------------------------------------------------------- Message: 1 Date: Tue, 20 Jul 2010 10:06:22 +0700 From: Wahyu Darmawan <Wahyu.Darmawan@xxxxxxxxx> To: General Red Hat Linux discussion list <redhat-list@xxxxxxxxxx> Subject: IBM DS4700 and RDAC Message-ID: <0FE1B519D219B64A87E99E362023854505171CDB6F@xxxxxxxxxxxxxxxxxx> Content-Type: text/plain; charset="us-ascii" Hi all, I have problem with my servers. I use two of HP Blade Servers and RHEL 4.6 installed on them, and have IBM DS4700 connected to them. In those servers are running RHCS (Red Hat Cluster Suite) with GFS for handling Oracle Database. Yesterday, I had missing one partition from the storage, suddenly. I called IBM and they suggested to use RDAC. The question is, Why should use IBM RDAC for multipath in my RHEL 4, and why HP Blade + HP EVA Storage don't use any addition plugins software to keep server + storage connection? I will appreciate For some reasons by all of you. Thank you. Regards, Wahyu ------------------------------ Message: 2 Date: Tue, 20 Jul 2010 16:07:05 +0700 From: Wahyu Darmawan <Wahyu.Darmawan@xxxxxxxxx> To: General Red Hat Linux discussion list <redhat-list@xxxxxxxxxx> Subject: RE: IBM DS4700 and RDAC Message-ID: <0FE1B519D219B64A87E99E362023854505171CDD6D@xxxxxxxxxxxxxxxxxx> Content-Type: text/plain; charset="us-ascii" Hi all, Any update? Thank you. -----Original Message----- From: redhat-list-bounces@xxxxxxxxxx [mailto:redhat-list-bounces@xxxxxxxxxx] On Behalf Of Wahyu Darmawan Sent: Tuesday, July 20, 2010 10:06 AM To: General Red Hat Linux discussion list Subject: IBM DS4700 and RDAC Hi all, I have problem with my servers. I use two of HP Blade Servers and RHEL 4.6 installed on them, and have IBM DS4700 connected to them. In those servers are running RHCS (Red Hat Cluster Suite) with GFS for handling Oracle Database. Yesterday, I had missing one partition from the storage, suddenly. I called IBM and they suggested to use RDAC. The question is, Why should use IBM RDAC for multipath in my RHEL 4, and why HP Blade + HP EVA Storage don't use any addition plugins software to keep server + storage connection? I will appreciate For some reasons by all of you. Thank you. Regards, Wahyu -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list ------------------------------ Message: 3 Date: Tue, 20 Jul 2010 06:09:19 -0500 From: "Marti, Robert" <RJM002@xxxxxxxx> To: General Red Hat Linux discussion list <redhat-list@xxxxxxxxxx> Subject: Re: IBM DS4700 and RDAC Message-ID: <FA1A205F-342F-4F94-960A-60EDEE82FDBB@xxxxxxxx> Content-Type: text/plain; charset="us-ascii" I would bet that it's simply the support guys are trained on RDAC and not trained on multipath. Sent from my iPhone On Jul 19, 2010, at 23:33, "Wahyu Darmawan" <Wahyu.Darmawan@xxxxxxxxx> wrote: > Hi all, > > I have problem with my servers. I use two of HP Blade Servers and > RHEL 4.6 installed on them, and have IBM DS4700 connected to them. > In those servers are running RHCS (Red Hat Cluster Suite) with GFS > for handling Oracle Database. > Yesterday, I had missing one partition from the storage, suddenly. I > called IBM and they suggested to use RDAC. > The question is, Why should use IBM RDAC for multipath in my RHEL 4, > and why HP Blade + HP EVA Storage don't use any addition plugins > software to keep server + storage connection? > I will appreciate For some reasons by all of you. > Thank you. > > > Regards, > Wahyu > > -- > redhat-list mailing list > unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe > https://www.redhat.com/mailman/listinfo/redhat-list ------------------------------ Message: 4 Date: Tue, 20 Jul 2010 13:17:14 +0200 From: Georgios Magklaras <georgios@xxxxxxxxxxxxx> To: General Red Hat Linux discussion list <redhat-list@xxxxxxxxxx> Subject: Re: IBM DS4700 and RDAC Message-ID: <4C4585BA.6030402@xxxxxxxxxxxxx> Content-Type: text/plain; charset=ISO-8859-1; format=flowed On 07/20/2010 05:06 AM, Wahyu Darmawan wrote: > Hi all, > > I have problem with my servers. I use two of HP Blade Servers and RHEL 4.6 installed on them, and have IBM DS4700 connected to them. > In those servers are running RHCS (Red Hat Cluster Suite) with GFS for handling Oracle Database. > Yesterday, I had missing one partition from the storage, suddenly. I called IBM and they suggested to use RDAC. > The question is, Why should use IBM RDAC for multipath in my RHEL 4, and why HP Blade + HP EVA Storage don't use any addition plugins software to keep server + storage connection? > I will appreciate For some reasons by all of you. > Thank you. > > > Regards, > Wahyu > > This is a classic. RDAC is the standard supported way to perform multi-path software config for IBM DS devices. In addition, it provides some troubleshooting features that are not included in other software suites (such as the HP tools). So, what they will do is to look at the 'SMdevices' command and verify the status of the RDAC software that talks to your DS4700 unit. The HP Blade + EVA is concerned with lights out and HP specific things. When I had to deal with a similar case, IBM insisted that it is part of the support deal to install this software. It is not really a big thing to install it. If they won't help you with installation give us a shout. -- Best regards, -- George Magklaras BSc (Hons) MPhil RHCE IT Systems Manager/Senior Systems Engineer The Biotechnology Center of Oslo University of Oslo http://www.biotek.uio.no http://www.no.embnet.org http://folk.uio.no/georgios ------------------------------ __ redhat-list mailing list Unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list End of redhat-list Digest, Vol 77, Issue 18 ******************************************* -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list
