SIRIS, ALTO, and NAS: Explaining the device migration process



This article explains the process, rationale, and prerequisites for performing a device migration.


  • Datto SIRIS
  • Datto ALTO
  • Datto NAS


A device migration is the process of moving data from one device to another. Device migrations are usually in response to device upgrades and, to a much lesser extent, hardware corruption or load balancing. The original device must be able to perform the tasks necessary for a device migration.

Generally, device migrations transfer at roughly 1TB per day. Network speeds or device-to-device connections will affect this rate.


You can't perform a device migration while any restores are active on the source appliance. Restores include file restores and virtualizations. You must remove all restores before initiating a device migration. You can't migrate restores.

Be sure to have the new device in-hand and to check that both devices are checking in before initiating the migration process.

If your device migration involves the transfer of ownership of data or equipment from one Managed Services Provider to another, both parties must consent to the transfer. Contact your Sales Executive for guidance if there are any concerns or ambiguities.

Getting Started

For information about beginning a device migration, see our Device Migration: Getting Started article.

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