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13532 discussions

vol size not having any effect on volume
by Phil Gardner 27 Sep '13

27 Sep '13

I recently attempted to expand a volume on one of our 2240's, but it seems to not have any effect on the free space. From the random reading I've done, it seems that having volumes and aggregates pushing >90% space utilization is not good in any case. Unfortunately the aggregate that this volume lives on is currently at 96% used (150G free), and the volume that I'm trying grow is at 95% used (124GB free). I attempted to grow the volume by 100G with the 'vol size +100g $volume_name' command. It took about 30s to come back to the prompt, but it did say that the volume has been resized to 100G larger than what df was showing. However, both df and df -A are not currently showing any change in size. Am I out of luck here? Is there any way to see a "queue" of things the controller is waiting to run or attempting to run? Feel free to school me on the badness of pushing anything close to 100% usage. This controller is sitting betweeen 70-95% CPU util as well. FWIW, this specific controller is used for VM storage, and I probably have some misalignment going on. -- _____________________ Phil Gardner PGP Key ID 0xFECC890C OTR Fingerprint 6707E9B8 BD6062D3 5010FE8B 36D614E3 D2F80538

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FAS2050 high CPU usage
by Andreev, Nikita 27 Sep '13

27 Sep '13

Hi All, We're using FAS2050 in one of our branch offices to run VMware cluster over NFS. It turns out that this box runs on 100% CPU usage even when servicing 40MBs/1000IOPS (the max I've seen was 70MB/s). Which results in ridiculous latencies. I do realise that it's a Celeron CPU. I just want to double check with you guys, that it's something you'd expect from this box. Because these days 40MB/s seems to be too little even as a CIFS file server for a small team in a branch office. Regards, Nikita ________________________________ This email is intended for the named recipient only. The information contained in this message may be confidential, or commercially sensitive. If you are not the intended recipient you must not reproduce or distribute any part of the email, disclose its contents to any other party, or take any action in reliance on it. If you have received this email in error, please contact the sender immediately and please delete this message completely from any systems. Confidentiality and legal privilege are not waived or lost by reason of mistaken delivery to you. ______________________________________________________________________ This email has been scanned by the Symantec Email Security.cloud service. For more information please visit http://www.symanteccloud.com ______________________________________________________________________

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What is the minimum number of shelves for a FAS3220 HA pair?
by Scott Classen 26 Sep '13

26 Sep '13

Hi all, We are considering a FAS3220HA running clustered ONTAP (8.2) with a single DS4246 shelf. However, we were recently informed by our sales people that this is not possible, and that the minimum number of shelves for an HA pair running cDOT was two. Apparently each node needs it's own DS4246 for the cDOT operating system? Is it not possible to split the disks on a single shelf into two aggregates and assign one aggregate to each controller? Confused, Scott

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Optimizing CIFS for WAN Access
by Ray Van Dolson 25 Sep '13

25 Sep '13

Hi all; ONTAP 8.0/8.1 mix. Looking for best practices on optimizing seqential read (throughput) access via CIFS from WAN locations (up to 80ms latency). Here's what I have so far: - Enable SMB 2.0 on filers. - Increase CIFS TCP Window size to ~2MB (default seems to be 17520 bytes)? - Ensure clients at remote sites have either large TCP window sizes set or allow for TCP window scaling (clients are OSX). Obviously some sort of WAN acceleration appliance at the remote site could help as well. Anything I'm missing? Ray

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Remote Power Off and Power On
by Ray Van Dolson 20 Sep '13

20 Sep '13

All -- have a FAS2040C and DS2246 in a remote office where a scheduled power outage is planned for a 48 hour period (longer than UPS runtime at that location). We currently have no on-site staff available. Is it possible to cleanly shut down this device and bring it completely back up via the Service Processor module only? The main piece I'm unsure of is the DS2246. If it uncleanly loses power, will it come back on automatically or does something physically need to be done? Obviously for the controller we can log into the SP and do a 'system power on'. Maybe that command is smart enough to send a signal to the disk shelves as well? Any way to verify disk shelf power status remotely from the SP? Ray

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Recovery options using SM
by Jeff Cleverley 19 Sep '13

19 Sep '13

Greetings, I'm experimenting with DR recovery options on filers running 8.1.2P4, 7-mode. We have 10G connections on all the filers. I wanted to use SM since we get close to 1TB/hr transfer between primary and secondary for SM/SV relationships and we have licenses for this on everything. I can't figure how to get data from the SV secondary back to the primary volume using SM. It won't let me set up a SM on the secondary volume because it is a replication destination. I can't delete the baseline snapshot, and a snapvault stop can take 6 hours or more. Once it completes, the destination qtree is gone and SM won't work. I'm going to look into SnapRestore, but it will require some new licenses for some of the filers. Ndmpcopy seems unstable for 10TB volume transfers and is extremely slow and takes days. Rsync of a volume with 50m files takes days also, partly because the rsync system only has a 1G connection. Thanks, Jeff -- Jeff Cleverley Unix Systems Administrator 4380 Ziegler Road Fort Collins, Colorado 80525 970-288-4611

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Re: The future of OnCommand Core for 7-mode
by Scott Eno 18 Sep '13

18 Sep '13

Thanks Tom and John. This is … unfortunate news. On Sep 17, 2013, at 3:24 AM, De Wit Tom <Tom.DeWit(a)neoria.be> wrote: > Hi Scott, > > I have the same thoughts about that as you, so I contacted the Oncommand Product manager a few months ago. DFM 5.2 will be the last version for 7-mode as this fits in the NetApp strategy of pushing customers to go to clustered ontap. > > DFM 6.0 has been rebuilt from the ground up and will only support clustered ontap, it will never be able to support 7-mode. > > Tom > > > On 17 Sep 2013, at 04:31, Scott Eno <s.eno(a)me.com> wrote: > >> Hi, >> >> With the release of OnCommand Core 6.0 For Clustered OnTap (phew!), has anyone heard about the future of OnCommand Core (henceforth "DFM") for 7-Mode? Are we seeing the end of feature releases for DFM, and 5.2 is now in perpetual maintenance mode like OnTap 7.3.7? I have no plans or reason to transition to cluster mode and certainly won't do it just to get the latest version of DFM, but I do use the crap out of DFM (GUI, CLI, Protection and Provisioning managers, SnapMirror/Vault management, RBAC, controller user account management, controller config management, etc) and, like any other application, it's always got bugs and issues. I hate to think that DFM is at the end of the road unless I go to cluster mode. >> >> Kinda like Microsoft releasing a new version of Office but it only works on a Surface tablet. >> >> --- >> Scott Eno >> _______________________________________________ >> Toasters mailing list >> Toasters(a)teaparty.net >> http://www.teaparty.net/mailman/listinfo/toasters >

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Expected performance difference between two configurations
by Ray Van Dolson 17 Sep '13

17 Sep '13

Hi all; Am trying to understand what sort of performance difference I might see between two different configurations: 1) IBM N6240 E21 (FAS3240C) w/ 120x600GB 15K 3.5" SAS and 512GB of flash cache 2) IBM N6250 E26 w/ 80x900GB 10K 2.5" SAS and 512GB of flash cache. Sorry, on the latter I don't know the equivalent FAS. Probably FAS3250C? We have fewer spindles, but newer, beefier controllers. Our workload is primarily VMware via NFS. Lotsa random reads and writes (more on the read side) with I'd say the bulk of the IO requests in the 64KB+ range. Will I regret going with fewer spindles? Ray

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The future of OnCommand Core for 7-mode
by Scott Eno 17 Sep '13

17 Sep '13

Hi, With the release of OnCommand Core 6.0 For Clustered OnTap (phew!), has anyone heard about the future of OnCommand Core (henceforth "DFM") for 7-Mode? Are we seeing the end of feature releases for DFM, and 5.2 is now in perpetual maintenance mode like OnTap 7.3.7? I have no plans or reason to transition to cluster mode and certainly won't do it just to get the latest version of DFM, but I do use the crap out of DFM (GUI, CLI, Protection and Provisioning managers, SnapMirror/Vault management, RBAC, controller user account management, controller config management, etc) and, like any other application, it's always got bugs and issues. I hate to think that DFM is at the end of the road unless I go to cluster mode. Kinda like Microsoft releasing a new version of Office but it only works on a Surface tablet. --- Scott Eno

1 0

CF Giveback options
by Eric Peng 16 Sep '13

16 Sep '13

Am running ONTAP 8.1.2 P4.. Currently have the following settings enabled: cf.takeover.on_network_interface_failure on cf.takeover.on_network_interface_failure.policy any_nic Want to enable setting: cf.giveback.auto.enable on Was informed by IBM there is a bug where enabling auto CF giveback can conflict with cf.takeover.on_network_interface_failure, and result in the system getting into an infinite loop of takeovers and givebacks. Do most of you leave auto CF giveback disabled as general policy? Eric

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