1TB.
sudo hdparm -Tt /dev/sda3
on Ubuntu 20.04: Timing cached reads: 29594 MB in 1.99 seconds = 14893.89 MB/sec
Timing buffered disk reads: 386 MB in 3.01 seconds = 128.07 MB/sec
....
sudo hdparm -Tt /dev/sda3
on Ubuntu 20.04: Timing cached reads: 29594 MB in 1.99 seconds = 14893.89 MB/sec
Timing buffered disk reads: 386 MB in 3.01 seconds = 128.07 MB/sec
....