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13513 discussions

Backup Software Managed Snapshots
by Ray Van Dolson 13 Dec '13

13 Dec '13

Greetings; We're using CommVault and have begun making broader use of their NetApp FlexClone integrated "SnapProtect" to do backups of our VMware environments (as opposed to CommVault using VMware snapshots for taking backups). We also have our NetApps taking two daily snapshots of most VM volumes for a quicker recovery option in some cases. CommVault is recommending that we let it manage all snapshot creation and removal duties and not to mix what they do with NetApp's snapshot scheduling. So far, I'm not understanding why the two can't co-exist. They use different naming conventions on their snapshots, CommVault's snapshots are FlexClone snapshots rather than regular snapshots, and their method offers much less flexibility. What do those of you who have their backup software talking to your filers for snapshot-creation do? Thanks, Ray

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FlashPool with SyncMiror
by Alon Zeltser 11 Dec '13

11 Dec '13

Hi All Does anyone know if FlashPool is supported with SyncMirror (MetroCluster) ? If so do I need to mirror also the SSD raid group with matching plex ? Or can I have one plex with hybrid and other plex without SSD ? Is anyone seen any documentation for such a configuration ? Thanks Alonz

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FC 144 tech refresh and performance doubts
by Milazzo Giacomo 10 Dec '13

10 Dec '13

Hi all, a customer of mine will have to perform a tech refresh on his 144 FC 15k disks. Now the "specialist", considering ONLY budget aspects offer this: A FAS3240 having 3 144 GB DS14MK4 shelves will be replaced by ONE DS4246 24x600 SAS A FAS3240 having 12 144 FB DS14MK4 shelves will be replaced by TWI DS4243 24x600 SAS Now, also considering the SAS multiplex and the direct access to the block customer, and me too, are very concerned about a degradation of performances. It was a lot of data disk against few ones. Suggestions? Opinions? Dott. Giacomo Milazzo [cid:image001.jpg@01C75422.0D316270] Technical Account Manager Sinergy SpA Filiale di Roma * 00198. viale Regina Margherita, 269 ' (+39) 3406001045 0644245272 7 (+39) 0226922048 * Giacomo.Milazzo(a)Sinergy.it

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free_space_realloc and measuring potentical benifit of free space optimization
by Jordan Slingerland 09 Dec '13

09 Dec '13

I have a unit that is experiencing some write bottle necks and back to back consistency points at times. I never see any of the disks busier than 60% even during the periods where I notice lots of CpfromCps. The unit has 2 aggregates of 50 disk with a raid size of 18. 2 raid groups are full and the last only has 14 disks. Looking at a statit during normal operation The smaller raid group is not any busier than the larger rgs. (I'm going to try to get a statit while the back to back cps are occurring and see if this holds true) During the periods of back to back cps I am seeing about 2500 writes ops and 7k read ops. This is a IBM rebranded N6240 with flexscale cards. (FAS3240) So, the question is, I am thinking of enabling free_space_realloc on the aggregate and possibly read_realloc on the volumes. (sis is not in use on this unit) Is there a way to measure the potential benefit of free_space_realloc, or rather how fragmented the aggregate is. I would not have expected it to be very fragmented at 60% used, but I would aslo expect to get maybe closer to 5k write ops before seeing back to back copies. Questions, comments, warnings, random thoughts? -JMS For the fourth consecutive year, Independent Health is the highest ranked health insurance plan in the New York/New Jersey region by J.D. Power and Associates 2013 Member Health Plan StudySM. For the sixth consecutive year, Independent Health was named one of the best companies to work for in New York State. Go to www.independenthealth.com to view careers and available positions. We are an Equal Opportunity Employer. CONFIDENTIALITY NOTICE: This e-mail and its attachments (collectively referred to as "e-mail") may contain confidential information that is privileged and protected from disclosure by Federal and State confidentiality laws, rules or regulations. This e-mail is intended for the designated addressee only. If you are not the designated addressee, you are notified that any disclosure, copying or distribution of this e-mail may be unlawful and may subject you to legal consequences. If you have received this e-mail in error, please contact me immediately by telephone at (716) 631 - 3001 and delete the e-mail from your computer immediately. Thank you for your attention.

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FlexCache monitoring
by Touretsky, Gregory 05 Dec '13

05 Dec '13

Hi, Is anybody on this list using FlexCache for NFS access over WAN? What kind of performance metrics would you be tracking to detect potential performance issues? Are you leveraging things like "flexcache hist" for any kind of troubleshooting? Thanks, Gregory --------------------------------------------------------------------- Intel Israel (74) Limited This e-mail and any attachments may contain confidential material for the sole use of the intended recipient(s). Any review or distribution by others is strictly prohibited. If you are not the intended recipient, please contact the sender and delete all copies.

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[OT] General Purpose Storage Discussion
by Ray Van Dolson 29 Nov '13

29 Nov '13

This list is great -- but obviously is NetApp centric. I'm wondering if any of you can recommend a mailing list or forum, with a similar level of participation and expertise, that's a bit more "general purpose" but still storage-centric. Something similar to the SAGE/LISA mailing lists for Systems Administration. Perhaps SNIA offers such discussion groups to its members? Thanks, Ray

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Definitive supported snapvault doc
by Jeremy Page 22 Nov '13

22 Nov '13

Is there a document out there that can tell me what the supported snapvault configurations are? Like is 8 > 7 in 7 mode etc? I am getting different answers depending on who I ask. Please be advised that this email may contain confidential information. If you are not the intended recipient, please notify us by email by replying to the sender and delete this message. The sender disclaims that the content of this email constitutes an offer to enter into, or the acceptance of, any agreement; provided that the foregoing does not invalidate the binding effect of any digital or other electronic reproduction of a manual signature that is included in any attachment.

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question about quotas for 7mode DFM 4.x
by Klise, Steve 22 Nov '13

22 Nov '13

7 mode; 8.2 something.. User wants to create a user that has rights to manager Quotas.. What rights do they need? Also, in the custom alerting, can we CC’ say they help desk, or email? I am not sure this is possible.. Hopefully the user can use system manager to manage the quotas, but might need console rights.. I believe the version of DFM is 4.2, so a bit on the old side.. Any help is appreciated.

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Netapp FAS610 8.1.3P1 stalling
by Martin 21 Nov '13

21 Nov '13

One of our 6210 Filers running 8.1.3P1 stalled I/O for approx 1 minute (11:08:27 -11:09:24) We saw this as latency of 5 seconds on the VMware hosts attached to the Filer via NFS and eventually "All Paths Down" messages on the ESX hosts. I also saw warnings in the messages file: Tue Oct 22 11:09:24 BST [TOASTER1: NwkThd_01:warning]: NFS response to client x.x.x.x for volume 0x5834a5c(vol004) was slow, op was v3 write, 69 > 60 (in seconds) >From looking in DFM Filer Summary view I see a "Z" shape in the graph for most of the counters on the Filer e.g. CPU, Network Throughput, All Protocol Ops. The counters dip low then rapidly increase and tail off again. (see attached JPG) <http://network-appliance-toasters.10978.n7.nabble.com/file/n25314/Filer-Z-s…> During this time it all of the ESX hosts saw timeouts to the NFS datastores. I checked the disk_busy on the only aggregate (90 x 15K SAS 450GB) on the Filer and it only shows the disks as 30-40% busy and the disk_busy drops during the time the Filer stalled. It seems odd as the overall load on the Filer didn't increase to precipitate this. <http://network-appliance-toasters.10978.n7.nabble.com/file/n25314/Filer-Z-s…> >From previous experience of performance cases with Netapp, we're usually asked to gather a perfstat next time it happens but this isn't possible as it's unpredictable and short lived. The thing that concerns me is from previous experience this is usually a precursor to the Filer stalling for much longer periods causing much more impact. In the past we've found the only option is to upgrade the Filer head. I would appreciate any pointers on how to identify the root cause of this. -- View this message in context: http://network-appliance-toasters.10978.n7.nabble.com/Netapp-FAS610-8-1-3P1… Sent from the Network Appliance - Toasters mailing list archive at Nabble.com.

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Cluster DATA vs 7-mode: admin prospective
by Iluhes 21 Nov '13

21 Nov '13

Netapp is pushing hard to start using Cluster Data ONTAP. From what I see, from admin/operator level is not as elegant and friendly as "Classic". I just cannot see going to it, it goes against almost everything I like about administrating netapp. Do people feel the same way out there is the field? Netapp is telling us that 7-mode will go away. Is that for real? Do you "like" Cluster OS?

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