Tag Archives: #clustermode


Please click here to goto the main NS0-504 Study Notes blog post to see all sections and additional information


2.1 Verify and plan for dual power feeds for all components.

  • DUAL is the key word
    • Dual Feeds
    • Dual PDUs
    • Dual Power Supplies
  • Controllers and shelves all have dual power supplies. Power should be plugged into A and B circuits. Each leg of power should be able to handle the load of the entire environment (N+N)
  • Refer to Site Requirements Guide for more information, and power/temp specs.
  • Verify that Controllers/Shelves were ordered with the proper plug style for your nation/voltage/outlet.  (For example NEMA L5-20  vs IEC c13-c14. See common cable types here. )

2.2 Be able to create cabinet diagrams or be able to read and interpret a cabinet diagram. Diagrams should include the cabinet’s storage systems and switches with all connections shown.

  • Core info
    • Rack Location
    • Cabinet U positions of servers
    • Switch Placement
  • Utilize Visio or NetApp Synergy to mock of the layout and available space.
  • If they show exact ports to exact switches, keep an eye on what may be trunked, that FC isnt plugged into the wrong ports, etc.


2.3 Create a connectivity diagram. Be able to read and interpret a connectivity diagram.

  • Fibre Channel
    • Port names/Locations
      • Initiator vs Target port setting
      • FC vs UTA
    • FC Switch port connectivity
      • WWPN
      • Port Locations
      • Host name, Zone name, Aliases
  • IP
    • Switch name / port
    • VLANs
    • Trunks / LACP
    • VIF names
  • See section 3 for more detailed information


2.4 Plan storage controller configuration.

  •  Important details
    • Cluster naming, automatic node names vs manually “renamed”
    • SVMs youll need, protocols they will use
    • DNS Server, default domains

2.5 Plan host configuration.

  • Protocols needed?
  • Multipathing software installed?
  • Snapdrive and Host Utilities installed (FC or iSCSI)?
  • Verify paths
  • HBAnywhere (Emulex) or SANsurfer (Qlogic) for FC installed?

2.6 Create a Snapshot plan.

  • What’s the customers RPO (Recovery Point Objective)?
    • It is the maximum tolerable period in which data might be lost from an IT service due to a major incident. The RPO gives systems designers a limit to work to. (Wikipedia)
  • What’s the customers RTO (Recovery Time Objective)?
    • The targeted duration of time and a service level within which a business process must be restored after a disaster (or disruption) in order to avoid unacceptable consequences associated with a break in business continuity. (Wikipedia)
  • Expected Space Reservations needed?
    • What’s the expected rate of change?  Plan for the needed space withing the volumes for this X the number of snapshots


2.7 Plan Ethernet switch configuration.

  • Remember- at least 2 different types of switches
    • Management
      • Flat lights out management switch config. Single vlan. (See section 3 for example)
    • Cluster Interconnect
      • These have specific configurations based on the number of cluster nodes. (See section 3 for example)
    • Data (management may be on these normal switches)
      • VLANs needed?  Any routing?
        • iSCSI
        • NFS
        • Management / iLO?
        • User desktops
        • Servers (Web/App/DB tiers)
      • MTU?
        • Jumbo: 9000 MTU?  (needed for FCoE)
        • Normal: 1500 MTU?
      • QoS?


2.8 Plan zoning configuration.

2.9 Plan iSCSI configuration.

  •  Gather all IQNs, which iGroups will they belong to?
  • Add multiple IP addresses, one for each LIF to the discovery and static bindings
  • Enable MCS (Multiple Connections per Session)
  • iSCSI boot from SAN needed? (May influence dynamic vs static persistence in iSCSI discovery, and also host LUN IDs used)
  • Use VLANs to ISOLATE Traffic!
  • CHAP or IPSEC needed?


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My NS0-504 Study Notes – NetApp Definitions

Commonly used definitions according to Netapp (Taken from the TR-4056 – Best Practices with Exchange and Cluster Mode)

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NetApp Cluster Mode TMP Volume type? Huh?

Late last night I was working on a very large CIFS and NFS migration for a customer. This was the culmination of a dual site FAS2050 7mode to FAS3220 cDot upgrade path.

I had originally planned on using the 7mTT (7-mode Transition Tool) to automate this migration. I went through the 7mTT install, core setup, and even planned a few volumes to be migrated by it.

Mid project, I decided against the 7mTT to do it manually. Though, many TMP type volumes were left around.

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NDMPCOPY on NetApp 8.2.x Cluster Mode

So, I have a customer who I need to move 3 “boot from iscsi san” luns from a Netapp OnTap 8.2 Cluster Mode vServer shared with regular iscsi luns, to their own dedicated vserver. How do you easily move between vservers? NDMPCOPY!

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Snippet: NetApp SSH Keys for passwordless auth.

It really pisses me off when I have to type passwords over and over and over again. Even more so when I am trying to do a ton of work or do a deployment and I need to do it.

It’s even more annoying when a customer won’t enable proper access to their systems, or they use root forever with weak passwords.

Enter the SSH KEYs. Here is how to set them up on your NetApp in both 7-mode and Cluster Mode!

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