QUOTE(capboy210 @ Nov 15 2009, 11:31 AM)

Does 32k clusters only support 1TB max? i forget the calculations if i would need 64k clusters for my 1.5 TB
32kb clusters only supports partitions of up to 512gb in size. For anything above that, 64kb clusters must be used, and partitions over 1tb are currently impossible.
So, to stick with the lowest cluster sizes, you'd make one partition just under 1tb (using 64kb clusters), and one partition around 500gb (using 32kb clusters). If you split the space evenly, then both partitions would be using 64kb clusters (as they'd be about 750gb each).
QUOTE(capboy210 @ Nov 15 2009, 11:31 AM)

Has anyone succesfully used 64k clusters and does it affect performance?
They lower the amount of data you can cram onto the drive (larger clusters = more slack space), but they don't affect performance in terms of speed.
Likewise, putting more data on a drive does not slow it down. Fragmentation can cause this, but only under very selective circumstances. Much less often then tech support teams like to imply.