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Local Tier creation fails in System Manager due to lack of disks

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hw
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Applies to

  • Entry level platform like FAS2820
  • 10TB HDDs SAS drives in internal and external shelf
  • 8 Root-Data paritioned drives available in the internal shelf

Issue

  • Attempting to create a data aggregate through ONTAP System Manager "Add Local Tier" page, fails with:

A local tier will not be created on node "node_name" for the following reason: 4 disks specified, but at least 7 disks are required for raid_tec.

  •  
    Attempting to perform manual partitioning, to the external shelf drives, the disks auto-revert to an unpartitioned state.

 

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