Increase DVR Storage?

[Kurchian1]

Is it possible to increase my DVR storage?
If not, is it possible to add a hard drive?

[BruceW]

With X1 service you can only increase storage by adding another DVR.

With a few legacy DVRs you can add an external hard drive. See https://www.xfinity.com/support/articles/external-dvr-storage.