“Does the FBI have advanced forensic techniques to read a scrubbed hard drive?”
My guess is that the next shoe to drop is that it isn’t the orig scrubbed drive. That thing went through an industrial shredder and now resides in a quarter panel of Chevey Volt,
They can trace the purchase date of the server easy enough. If it is outside the time of use in the State Department, we have a ringer. If she had it rented from Platte River Networks, they will be able to know its time line of rental. If that server is found to be one outside her Secretary of State time or if another server turns up that was earlier, we have evidence of obstruction. That should be a cause for indictment.