||Assuming the pan-sharpened version is of 4x4 times higher resolution than the 8 band.
2.7*8*1024/(4*4*3+8) = 395 GB only for the original 8 band tiff data.
It would help us in two main short comings if someone could host the 8 band data as torrent.
1. We will be able to download within less time and use the data.
2. We can work on the task without another high capacity hard disk/s.
Also it would save our costs of download.
Even 3 band RGB pan-sharpened can be generated with some algorithm using the single p band and RGB bands coming from the 8 bands.
Hope I am making sense.