NetApp Administration and Best Practice, Brendon Higgins, Proact UK

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Introduction to NetApp storage and tips for successful administration based on 6 years experience

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NetApp Administration and Best Practice, Brendon Higgins, Proact UK

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  2. 2. 2https://communities.netapp.com/people/BrendonHiggins/blog
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  7. 7. 7Throw it at the wall and see what sticks
  8. 8. 8Spend more time at the start on the storage basics or move quicklytechnical detail and best practice advise.
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  11. 11. How to share, shared storage11
  12. 12. One good reason, given the presentation is for the virtual machine usergroup (VMUG).12
  13. 13. May still come across DoT 6 systems but they are becoming rare. Lotsof 7 mode systems out there still however. New features are onlybeing added to the DoT 8 cluster mode code.13
  14. 14. https://communities.netapp.com/people/BrendonHiggins/blog/2013/01/31/develop-an-understanding-of-das-nas-and-sanDAS and SAN look the same to the application and are block basedSAN means LUNsNAS is file based and requires network protocols, NetApp supportsCIFS, NFS, FTP & HTTP14
  15. 15. Key NetApp advantage15
  16. 16. Still engineers do not know… Lots of wasted effort by the filer. NetAppnow includes tools to detect LUN alignment issues. Great jumping offplace to start learning more,https://communities.netapp.com/message/58686.16
  17. 17. Not such a problem in newer operating systems such as Windows201217
  18. 18. CIFS share set up correctly but not working? See this frequently afterenabling NFS for VMware.18
  19. 19. Add more ‘power’ to a system by swapping the filer heads. The datastays on the disk and is unchanged. Simple process.19
  20. 20. Scale out cluster limits change with every release, so check. SAN isheld back by Asymmetric Logical Unit Assignment (ALUA) technology.20
  21. 21. Lots of wizards to guide and help with tasks. Hiding the complexitywhenever possible.21
  22. 22. https://communities.netapp.com/people/BrendonHiggins/blog/2013/01/07/introduce-netapp-interfaces--filerview-cli-system-manager-rsh-powershell-etcConsole is the most powerful tool for daily administration.All console sessions should be recordedFilerview has been discontinuedSystem Manager is the replacement but be sure to keep it upgraded22
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  27. 27. Based on http://oracle-study-notes.blogspot.co.uk/2011/02/simple-concept-map-for-some-basic.html27
  28. 28. More Back to BasicsLearn the fundamentals of NetApp core technologies. Instalments inthis series so far:Chapter 1: Thin ProvisioningChapter 2: DeduplicationChapter 3: FlexCloneChapter 4: Volume SnapMirrorChapter 5: RAID-DPhttps://communities.netapp.com/docs/DOC-1285028
  29. 29. Key NetApp advantage29
  30. 30. http://msdn.microsoft.com/en-us/library/windows/desktop/bb968832(v=vs.85).aspxNew SQL DBA’s always say to me that the last backup product theyused is ‘so’ much better than this NetApp mumbo, jumbo but they fail tounderstand that the underling technology is the same. In order to getthe backup to run reliable, just sort out the application environment outand everything works just fine…30
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  34. 34. One way process…34
  35. 35. Based on snapshots, easily reversible and a key NetApp feature35
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  37. 37. Sometimes ‘Sorry boss’ is not enough.37
  38. 38. So many consoles…38
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  41. 41. The default reported state HAS to be healthy or people use accept it isconstantly ‘broken’. Check at least twice a day and resolve any issuesASAP.41
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  44. 44. Day long workshop in its own right44
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  46. 46. Day long workshop in its own right46
  47. 47. http://www.purplemath.com/modules/meanmode.htmNote the mean number is not in the list of actual numbers in the range.47
  48. 48. http://en.wikipedia.org/wiki/Normal_distributionWhen putting forward calculated numbers as ‘actual’ results be sure toconsider what the range of data looks like and how far your numberdeviates from the centre.48
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  50. 50. Day long workshop in its own right50
  51. 51. An Exchange 2003 datastore on a single LUN. The aggregate had 60300gb 15k FC disks and in Aug 2010 the FAS3070 heads wereupgraded to FAS3170. In Nov 2010, the flash cache was enabled.Notice the average trend before and after flash cache. Also thisdiagram enabled the upgrade to fly through the Cap-Ex process.51
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  53. 53. Export the disk performance to Excel. Notice that dparity & parity diskshave negligible IOPs and skew the results of any calculations soremove them.53
  54. 54. As the disks of the aggregate become more busy, the latency willincrease.54
  55. 55. As the disks of the aggregate become more busy, the latency willincrease.55
  56. 56. Let the tools do the heavy lifting56
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  59. 59. Always test for yourself what is being reported by using a knownsource.59
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  62. 62. Create your own support issues. Get the a support number and startthe clock on the SLA timer. Call the support number after about 30minutes, if you have not received an email or phone call. If you findyou are not getting the support you need, ask for escalation. In theunlikely event this does not happen, ask to speak to the duty manager.62
  63. 63. Learn this tool! - http://support.netapp.com/NOW/asuphome/63
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  66. 66. Recertification every 2 years66
  67. 67. It is how I did it67
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