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CONTAP-603585: Add-disks simulate layout is different than actual aggregate expansion

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ontap-9
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CORE
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Issue

  • When performing aggregate expansion with the -simulate option, the simulation output indicates that new disks will be added evenly to existing RAID groups. However, during actual execution (without -simulate), ONTAP adds some disks to an existing RAID group and creates a new RAID group for the remaining disks. This behavior does not match the simulation output.
  • Command to simulate adding 10 disks: Simulation output indicates 5 disks will be added to RG0 and 5 disks to RG1.
  • Actual command execution to add 10 disks: 5 disks are added to RG1, and a new RAID group (RG2) is created with the remaining 5 disks.

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