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Dell PowerVault MD 32XX/36XX Series Storage Arrays CLI Guide

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Storage Partitioning

Storage partitioning enables hosts to share access to virtual disks in a storage array. You create a storage partition when you define the following storage array assignments:
  • A host
  • A host group
  • Virtual disk-to-logical unit number (LUN) mapping

The virtual disk-to-LUN mapping enables you to define which host group or host has access to a particular virtual disk in the storage array.

After you create a virtual disk copy, the target virtual disk automatically becomes read‑only to hosts to ensure that the data is preserved. Hosts that have been mapped to a target virtual disk do not have write access to the virtual disk, and any attempt to write to the read-only target virtual disk results in a host I/O error.

If you want hosts to have write access to the data on the target virtual disk, use the set virtualDiskCopy command to disable the read-only attribute for the target virtual disk.

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