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Dell EMC Metro node 7.1 Administrator Guide

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Prerequisites for target devices

The target device must:

  • Be the same size or larger than the source device.

    If the target is larger in size than the source, the extra space can be utilized by using storage volume expansion, if all the prerequisites for storage volume expansion are met.

    For example, if the source is 200 GB, and the target is 500 GB, only 200 GB of the target can be used after a migration. The remaining 300 GB can be claimed by performing a storage volume expansion, if supported by the virtual volume.

  • Not have any existing volumes on it.
    WARNING:Device migrations are not recommended between clusters. All device migrations are synchronous. If there is I/O to the devices being migrated, and latency to the target cluster is equal to or greater than 5ms, then significant performance degradation could occur.

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