toasters

toasters@lists.teaparty.net

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13514 discussions

Some thoughts and questions on A-sis
by Adam McDougall 27 Mar '08

27 Mar '08

I started testing sis on one of our 3040's last weekend. Sorry if theres more extensive information on NOW, but the things I've found so far were fairly rudimentry. Some impressions and questions: I found out quickly that my 5T test volume was too big. Looked up the limits because I had no idea there were volume size limits. 3T for 3040 hmm. I have an existing volume that holds 2.5T, so that is pushing it, and while I would like to split it up, it won't happen overnight. I'm not desperate to use sis on it, although I am almost done copying it and so far have realized 26% savings from dedupe for testing. I wonder why the max size scales with the system model, I haven't thought of a good reason for this yet since you could easily have lots of 3T volumes. I was wondering if you can get sis to shrink say 2.8T to 2.0, is the 2.0 what counts for the sis volume limit size? Even so, would I run into trouble if trying to do a full volume restore and the full data set is over 3.0 but would have shrunk? Once I write over 3T into a volume, it sounds like I cannot run sis on it. I'm not too worried about having to do a full restore of a volume from tape, but I don't want to limit my future options if the short term payoff isn't worth it. I'm pretty sure I'll use it on all or most of all of my other volumes since they are much smaller. I noticed during my data copy, the snapshot reserve was blowing out big time. It seemed like almost any savings from sis went into snapshots for some reason. 100, 200, 400% full, and it started trimming itself back after a while. Since this was a non-production copy, I didn't care, and deleted those snapshots this morning, but I thought that was rather odd, and couldn't think what the snapshots would have to offer since if the data was unmodified at the filesystem level, the snapshot should contain the same data. While not a problem for an initial copy, I would expect the same thing to happen when sis runs during production, and although it wouldn't be as large and would eventually flush out, why am I expending space to store duplicate copies of data that I asked it to deduplicate? :) Maybe its just because wafl identifies them as "changed blocks" and insists on storing them in the snapshot. A 1 gig file of zeros still takes several tens of megabytes after sis. hmm :) And roughly twice as much for a second copy of it.

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vmware on nfs stability issues
by Pascal Dukers 26 Mar '08

26 Mar '08

We have stability issues with vmware esx (3.0.2) on nfs whenever there is a cluster failover. The datastores come back online after the failover is complete (30-40 seconds), but some of the virtual servers (solaris/windows) can crash while the failover takes place. There are probably some timeout settings I need to configure on all esx hosts, but the NetApp best practice guide on vmware/nfs does not mention changes other than the locking parameter. So I hope someone can share if they encountered the same issue and what they changed to improve it. -- View this message in context: http://www.nabble.com/vmware-on-nfs-stability-issues-tp16126353p16126353.ht… Sent from the Network Appliance - Toasters mailing list archive at Nabble.com.

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cifs.homedir and Microsoft DFS global name space
by Sayla, Mustafa 25 Mar '08

25 Mar '08

Does anyone have experience setting up cifs.homedir feature on FAS3040 (Ontap 7.2) with Microsoft DFS global name space? I have been trying to set this up but permission are causing as issue. Homedir feature works fine without DFS but when we use DFS then users can access other users home drives also as permission needs to be set for everyone to have full access. Mustafa Visit us on the Web at: http://www.mesirowfinancial.com This communication may contain privileged and/or confidential information. It is intended solely for the use of the addressee. If you are not the intended recipient, you are strictly prohibited from disclosing, copying, distributing or using any of this information. If you received this communication in error, please contact the sender immediately and destroy the material in its entirety, whether electronic or hard copy. Confidential, proprietary or time-sensitive communications should not be transmitted via the Internet, as there can be no assurance of actual or timely delivery, receipt and/or confidentiality. This is not an offer, or solicitation of any offer to buy or sell any security, investment or other product. Please consider the environment before printing this e-mail.

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RE: RAC install on NetApp
by Webster, Stetson 21 Mar '08

21 Mar '08

Also search here for more RAC specific articles: Http://www.netapp.com/library/tr -----Original Message----- From: Robert K. Borowicz [mailto:rob-7704@austin.rr.com] Sent: Wednesday, March 19, 2008 10:32 AM Pacific Standard Time To: toasters(a)mathworks.com Subject: RAC install on NetApp Toasters, My DBA just came to me and complained that a Ora RAC 10g build took 18 hours when using a Filer NFS mount. Seems I've heard of this issue before but forget the fix. Has someone seen this before ? TIA -Rob

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LA Sales Folks
by Nicholas Bernstein 20 Mar '08

20 Mar '08

Does anyone know any netapp reps in Los Angeles they wouldn't mind putting me in touch with? Probably best to respond off-list as there's no need to spam everyone. Thanks in advance, Nick

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RE: RAC install on NetApp
by Webster, Stetson 19 Mar '08

19 Mar '08

Only a few million. TR3369 is a netapp doc. It used to be here: Http://www.netapp.com/library/tr/3369.pdf In short, the problem is likely either a host NFS config or even Oracle config. EVERY one of the NFS mount options are critical. Also do this search on the NOW site: "nfs mount databases" (currently emailing from mobile, can't verify links now). -----Original Message----- From: Robert K. Borowicz [mailto:rob-7704@austin.rr.com] Sent: Wednesday, March 19, 2008 10:32 AM Pacific Standard Time To: toasters(a)mathworks.com Subject: RAC install on NetApp Toasters, My DBA just came to me and complained that a Ora RAC 10g build took 18 hours when using a Filer NFS mount. Seems I've heard of this issue before but forget the fix. Has someone seen this before ? TIA -Rob

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performance comparisons between VMware on iSCSI and NFS
by Milazzo Giacomo 18 Mar '08

18 Mar '08

HI all We've just discussed about this but I'm looking for more realistic samples that compare VMware on iSCSI and on NFS. With "realistic" I mean not 100% sequentials read/write like the ones that have been presented at VMworld. Have you something about? Thank you in advance

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Upgrade 900 series to 3000 series filer
by No More Linux! 18 Mar '08

18 Mar '08

we need to replace an older 900 series cluster with a new 3070 cluster. i want to make sure i dont miss anything or gotchas etc, looked on NOW but didnt find a complete guide or maybe i searched wrong. we have 2 new 3070 heads and cables in the box and here is the current plan 1) shutdown and unmount storage nfs/iscsi 2) update to current ontap 7.2.4 (currently at 7.2.3) 3) reboot and allow shelf/disk firmware updates to complete 4) shutdown and remove 9XX heads and cabling 5) install 3070 heads, recable primary and secondary loops 6) power on heads, ensure licenses are current and installed and verify volumes 7) reload ontap with 3000 series architecture release 7.2.4 7) update rc file with new interface names any major gaps in the above or comments from folks who have done this recently? i went over this with the netapp tech rep and it seems pretty straightforward but always want peer review :)

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anyone using the storwize data compression products?
by No More Linux! 16 Mar '08

16 Mar '08

we are looking at these appliances which compress volume data on the fly and sit between the client and the filer(s). interested in hearing anyone elses success or failure stories with these devices. http://www.storwize.com/ thanks toasters!

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Quick program I put together
by Nicholas Bernstein 14 Mar '08

14 Mar '08

All, I put together a quick program which calculates the actual usable space you get based on the various configuration options you can set on a filer. It's a .net application but I'm guessing it should run via wine for any *nix folks. I need to add SAS disks as an option, and if anyone knows of an authoritative source on rightsizing (I calculated the percentages based on looking at specific disk information). Anyway, it's somewhat thrown together and not completely finished, but I thought I would see if any folks out there might find it useful before I wasted any more time on it. Also, it would be nice to see how close it gets to people's actual configurations. I'm guessing there might be some rounding errors as well as some fuzzy rightsizing. love to get some feedback, Nick http://nicholasbernstein.com/calc/netapp_calc.zip

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