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Storage and Backups-Netapp
How to configure the Data ONTAP subnet feature in a MetroCluster

Applies to

  • MetroCluster
  • ONTAP 9
  • subnet feature

Description

This article describes the procedure to configure the Data ONTAP subnet feature in a MetroCluster.

How to identify a mismatch of shortwave and longrange SFPs in a FC-VI card?

Applies to

  • MetroCluster FC
  • FCVI
  • long wave and short wave intermix

Description

SFPs need to be the same for both ports on the FCVI card. The below procedure explains how to identify a mismatch.
In order to decide on the correct type of SFP you need to verify the infrastructure (cables / patch pannels) used in the datacenter.

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Dynamic capacity expansion over asynchronous remote volume mirroring results in failed drives and failed volumes

Applies to

E-Series Controller Firmware 8.xx
SANtricity

E5500 running prior to 08.25.14.00 firmware.
•    E5600 running prior to 08.25.14.00, or prior to 08.30.40.00 firmware, or 08.40.00.00 firmware.
•    E5700 running 08.40.00.00 firmware.

Issue

When performing one of the following reconfigure operations on a volume group containing ARVM mirrors with PI enabled and a controller that supports multicore, the reconfigure operation can result in PI Reftag errors that lead to failed drives, failed volumes and failed reconfigure operations. Due to the volume failure during reconfiguration, the only way to recover is to delete the volume group. The data cannot be recovered by recreating the configuration.

Affected Reconfigure Operations:

  • Dynamic Capacity Expansion (DCE)
  • Dynamic Volume Expansion (DVE)
  • Dynamic Segment Sizing (DSS)
  • Dynamic RAID Migration (DRM)
  • Defrag

Check Active IQ if this impacts your systems

The following conditions must exist:

  • The system is running one of the platforms and affected releases listed in the Environment section (Multiple Core platform's only)
  • Volume Groups contain ARVM mirrors with PI enabled
  • A DCE, DVE, DSS, DRM, or Defrag reconfigure operation occurs on a Volume Group with PI enabled and ARVM mirrors
  • Traditional Volumes (DDP is not affected)

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How to correct ACP partial connectivity and Single Path HA on a FAS22xx platform

Applies to

FAS2000 series

Description

This article describes the procedure that should be followed to correct Alternate Control Path (ACP) partial connectivity and Single Path HA on a FAS22xx platform.

The following output is displayed:

NetApp Release 8.1 7-Mode: Thu Mar 29 13:56:17 PDT 2012
System ID: 1789379212 (ncdra00016n1); partner ID: 1789383578 (ncdra00016n2)
System Serial Number: 600000139685 (ncdra00016n1)
System Rev: B1
System Storage Configuration: Single-Path HA
System ACP Connectivity: Partial Connectivity

Note: Without any external disk shelves, the FAS22XX series controller has only one path to the disks on the internal shelf, and there is no connection to the ACP lock-wrench port e0P.

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Troubleshooting Workflow: cluster join failure

Applies to

Clustered Data ONTAP 8.2

Issue

Check Active IQ if this impacts your systems

Cluster join failure

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How to troubleshoot MetroCluster check cluster errors

Applies to

  • MetroCluster
  • metrocluster check
  • Cluster errors

Description

MetroCluster check reports errors on the cluster object:

ClusterA::> metrocluster check show

Last Checked On: mm/dd/yyyy hh:mm:ss

Component           Result
------------------- ---------
nodes               ok
lifs                ok
config-replication  ok
aggregates          ok
clusters            warning
5 entries were displayed.

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