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13531 discussions

RE: Information on how Netapp single_image mode works
by Mike Ball 18 Apr '07

18 Apr '07

Thanks for the responses but I am still confused about how the paths are determined. For example, lets say I have a FAS6030C (Node1 and Node2) running Data Ontap 7.2.1 with each head having 2 target ports each in a switched fibre fabric. In this fabric, I have a Windows host (running Snapdrive 4.2.1 and DSM 3.0) with a dual port fibre card. I create lun0 on Node1 from the Windows host via Snapdrive. How is the path chosen by the FAS6030C? Is there a round robin algorithm which gives out the target port on Node1 to the Windows host? -----Original Message----- From: Paul Rosham [mailto:paulrosham@yahoo.com.au] Sent: Monday, April 16, 2007 11:26 PM To: 'Jack Lyons'; 'Nils Vogels' Cc: Mike Ball; toasters(a)mathworks.com Subject: RE: Information on how Netapp single_image mode works In addition, anything with a reasonable NVRAM/Cluster interconnect setup (i.e. 3000, 6000 series) the additional latency of the request passing to the correct head via the cluster interconect is almost negligible. -----Original Message----- From: owner-toasters(a)mathworks.com [mailto:owner-toasters@mathworks.com] On Behalf Of Jack Lyons Sent: Tuesday, 17 April 2007 11:10 AM To: Nils Vogels Cc: Mike Ball; toasters(a)mathworks.com Subject: Re: Information on how Netapp single_image mode works one caveat, based on my experience the host based software will see all paths to the filer as equal, so if you hit the WWPN on the "other" head of the cluster, you will get an error message and an ASUP. It is annoying, and as far as I know, not a problem. Jack Nils Vogels wrote: > Hey Mike, > > On 4/16/07, Mike Ball <MBall(a)datalink.com> wrote: >> >> I am trying to find additional information on how Netapp single_image >> mode works in a clustered environment as it pertains to pathing. >> Single_image mode pulls all the WWPN's from the Netapp cluster and >> presents it to the SAN as one WWNN. What I would like to know is how >> paths are determined from hosts to cluster nodes if no target portals >> are defined? >> > > There will be multiple paths available (at least 2, one for ClusterA, > one for ClusterB) and you generally will need host-based path > selection software to select the active one. > > Some software selects on 'Most Recently Used', other selects on fixed > path, this may vary per multipathing-software. >

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Information on how Netapp single_image mode works
by Mike Ball 17 Apr '07

17 Apr '07

I am trying to find additional information on how Netapp single_image mode works in a clustered environment as it pertains to pathing. Single_image mode pulls all the WWPN's from the Netapp cluster and presents it to the SAN as one WWNN. What I would like to know is how paths are determined from hosts to cluster nodes if no target portals are defined?

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ndmpcopy and the newb
by Brian Dunbar 16 Apr '07

16 Apr '07

Hi, I'm new to managing Filers - I hope you'll put up with a newb question or two while I get on my feet. I've not been left entirely on my own here - but there are two unix guys here to mange a lot of servers where before there were four of us .. and the two guys who had done this job previously are the ones who left for greener pastures. So I've got a mature and reasonably stable infrastructue to work with at least. My first task is to move a volume from a busy filer to a non-busy filer. 1. The preferred method (for our shop, I'm told) is to use ndmpcopy I've got shell access to both filers, they can ping each other. I've got a desination volume created. ndmpcopy [options] source destination The source and destination specify a hostname (no problem) and aboslute pathname of the directory to be used for the transfer. Does this mean the absolute pathname of the source/destination volume? Or .. something else? If the former how do I find that? 2. Unless there is a better way to do this? I can of course mount both volumes via NFS from a 3rd host and simply move then but (from what I've read) ndmpcoy is a better choice. Brian Dunbar Plexus brian.dunbar(a)plexus.com

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5um or 90um
by Willeke, Jochen 16 Apr '07

16 Apr '07

Hi toasters, does anybody know if we can use 9um LC-LC cables to connect a shelf with an ESH2 to a filer, or are 50um LC-LC cables the only supported ones? Because this will be a production system i need to know if it is covered from Netapp-support. Sadly i did not find anything about this on NOW. Best Regards and thanks in advance Jochen

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Replacing an FAS960 with a 3070
by Matt Phelps 13 Apr '07

13 Apr '07

All, We'll be replacing a 960 with a new 3070 soon and am wondering if anyone's gone through this upgrade path yet. Our current plan is to install 7.2.2 for the 3070 (which is an x86_64 based OS) with the 960 still up, run "download" to put the boot stuff on the disks, then edit the /etc/rc file to change the device names for the network interface, then shutdown and swap the heads. Hopefully the 3070 will just come up and hum right along. Any gotchyas? -- Matt Phelps System Administrator, Computation Facility Harvard - Smithsonian Center for Astrophysics mphelps(a)cfa.harvard.edu, http://cfa-www.harvard.edu

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RE: How to create a new filer
by Holloway, Chris 13 Apr '07

13 Apr '07

You could try booting into Maintenance mode (ctrl+c during startup) and then selecting option 4a which is "initialize all disks and create a flexible root volume" or something similar (assuming it's ONTAP 7). Once this is done it will boot into ONTAP but this is not a full version, so you just need to do an ONTAP "upgrade" to it to get all the right files on there. Your config and licenses will be lost so you'll need to re-enter them. Chris -------------------------------------------------------- Christopher Holloway Consultant Professional Services Main: +44 (0)1423 519000 Direct: +44 (0)1423 519099 Fax: +44 (0)1423 519251 Mobile: DNS Arrow Nidderdale House Beckwith Knowle Harrogate HG3 1SA www.DNSarrow.co.uk Email Confidentiality Notice: This message is private and confidential. If you have received this message in error, please notify us and remove it from your system. "DNS Arrow" means Digital Network Services (UK) Limited, a company registered in England. Company Registration Number 3952678. Registered Office: Squire, Sanders & Dempsey, Level 28 Tower 42, 25 Old Broad Street, London EC2N 1HQ, UK. ________________________________ From: owner-toasters(a)mathworks.com [mailto:owner-toasters@mathworks.com] On Behalf Of Davies,Matt Sent: 13 April 2007 14:23 To: toasters(a)mathworks.com Subject: How to create a new filer Hi all, Having just changed out our FAS250's for FAS270's, and utilised the old 250 as a shelf on the 270. I have been left with the processor and licenses for a FAS250. The question is, if I buy a DS14Mk2 shelf full of disks, and put the processor in the new shelf, how would I get this to become a filer once again as there will be no Root volume Does anyone know all the steps involved, or can someone point me in the right direction ? Thanks Matt ____________________________________________________________ This e-mail (including all attachments) is confidential and may be privileged. It is for the exclusive use of the addressee only. If you are not the addressee, you are hereby notified that any dissemination of this communication is strictly prohibited. If you have received this communication in error, please erase all copies of the message and its attachments and notify us immediately at help(a)generalatlantic.com. Thank You.

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How to create a new filer
by Davies,Matt 13 Apr '07

13 Apr '07

Hi all, Having just changed out our FAS250's for FAS270's, and utilised the old 250 as a shelf on the 270. I have been left with the processor and licenses for a FAS250. The question is, if I buy a DS14Mk2 shelf full of disks, and put the processor in the new shelf, how would I get this to become a filer once again as there will be no Root volume Does anyone know all the steps involved, or can someone point me in the right direction ? Thanks Matt _____________________________________________________________ This e-mail (including all attachments) is confidential and may be privileged. It is for the exclusive use of the addressee only. If you are not the addressee, you are hereby notified that any dissemination of this communication is strictly prohibited. If you have received this communication in error, please erase all copies of the message and its attachments and notify us immediately at help(a)generalatlantic.com <mailto:help@generalatlantic.com>. Thank You.

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snap shots stop working
by Linux Admin 12 Apr '07

12 Apr '07

After making changes to snap schedule, snapshost are no longer working on the cluster. Veriosn: NetApp Release 7.1.1: #rsh netapp1 snap sched Volume vol0: 0 2 6@8,12,16,20 Volume vol1: 2 9 1@15 No new snap shots for 2 weeks. Manual snapshot creation work fine. Any ideas? Much appreciated. Thanks

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Re: snap shots stop working
by Davies,Matt 11 Apr '07

11 Apr '07

Are you using NDMP and snapmirror ? -----Original Message----- From: owner-toasters(a)mathworks.com <owner-toasters(a)mathworks.com> To: NetApp Toasters List <toasters(a)mathworks.com> Sent: Wed Apr 11 20:27:53 2007 Subject: snap shots stop working After making changes to snap schedule, snapshost are no longer working on the cluster. Veriosn: NetApp Release 7.1.1: #rsh netapp1 snap sched Volume vol0: 0 2 6@8,12,16,20 Volume vol1: 2 9 1@15 No new snap shots for 2 weeks. Manual snapshot creation work fine. Any ideas? Much appreciated. Thanks _____________________________________________________________ This e-mail (including all attachments) is confidential and may be privileged. It is for the exclusive use of the addressee only. If you are not the addressee, you are hereby notified that any dissemination of this communication is strictly prohibited. If you have received this communication in error, please erase all copies of the message and its attachments and notify us immediately at help(a)generalatlantic.com <mailto:help@generalatlantic.com>. Thank You.

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reallocate experience?
by Philip Boyle 11 Apr '07

11 Apr '07

Hi guys, Has anyone seen any issues with using the reallocate command in relation to a) increase in snap shot usage b) performance impact c) length of time to run the reallocation? I may have a requirement to reduce the raid group size option( currently 28 ) on an existing 12 disk aggregate to 16 and add additional disks, thus potentially creating the presence of 'hot disks' in the primary raid group which will have been increased from 12 to 16 disks. http://now.netapp.com/NOW/knowledge/ docs/ontap/rel70rc/html/ontap/cmdref/man1/na_reallocate.1.htm Any feedback on past experience would be useful. I'm running ONTAP 7.0.4 on an FAS940 cluster with legacy LRC modules and 36G disks. Thanks, Philip

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