Maximum Volume Size and Largest Size Drive

Article Id: AA-01124 Last updated date: 01-16-2021

Maximum Volume Size and Largest Drive Capacity

Drobo supports larger capacity drives in order to enable users to expand their Drobo Storage. While larger capacity drives can be used in a Drobo as they become available, Drobo products have a current maximum usable storage limit with the latest firmware and dashboard versions.

Below, is a table that lists current product line with maximum storage, maximum volume size and largest drive tested in the Drobo.


* In order to achieve maximum volume of 64TB, review knowledge base article "64TB Volume Support"


  1. Max storage: Users can have only the specified max storage on their Drobo. Total data on the Drobo cannot exceed this value. For example: Total amount of data in Gen 3 cannot exceed 64TB.
  2. SMR drives including (but not limited to) Seagate Archive and Hitachi Ultrastar drives are not supported for use in any Drobo.
  3. PMR drives are okay to use in Drobo current product line listed above.
  4. For information on which drive works best in your Drobo, see article:

Legacy Product Line:

Below, is a table that lists Drobo legacy product line with max volume and storage size.


1. Drobo 4-bay Gen 1 does not support >2TB drives

2. While larger drive sizes can be used in our legacy products, they have not been officially qualified.

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