approximatl
When the Hoppers first came out, the 2.35 GB above 1 TB was reserved for PTAT. In a later firmware update they made the entire 1.235 TB available for user recordings. If you have PTAT set to record all 4 channels and save for 8 days, you will have used up approximately 2,35 GB and will have about 1 TB left for other recordings. With no PTAT, you will have the entire 1.235 TB available. With shorter save time or fewer channels in PTAT, you will have somewhere in between the 2 numbers.
It didn't make sense when I read it since I had DISH Service and the Hopper 2K installed in November 2012 which was longer than that, I always remembered it as being 1TB. How was DISH able to go from 1TB to 1.2TB as I thought the drive was partitioned for a certain size so the user can access it while the rest of the drive is on other partition(s).
When the Hoppers first came out, the 2.35 GB above 1 TB was reserved for PTAT. In a later firmware update they made the entire 1.235 TB available for user recordings. If you have PTAT set to record all 4 channels and save for 8 days, you will have used up approximately 2,35 GB and will have about 1 TB left for other recordings. With no PTAT, you will have the entire 1.235 TB available. With shorter save time or fewer channels in PTAT, you will have somewhere in between the 2 numbers.