Max hard drive size?

[xerces8]

Hi!  With 3TB hard drives out, I am wondering, what is the maximum size Amiga can handle (with appropriate patches and file systems) ?  Regards, David

[xerces8]

SFS cannot increase the maximum the driver can access.

In what maximum can drivers access?
At least common ones, like A1200 builtin etc.
2 TB ?
Is there a limit in RDB? (last time I checked it looked like it can handle many more, but that was years ago. No, decades ago.)

[xerces8]

Where does the 2 TB limit come from? trackdisk64 with 64 bit addressing should be able to handle more. Or SCSI direct.  Just wondering....

[xerces8]

It comes from using a 32 bit value to count sectors (2^32 times 512 bytes per sector).

By whom?
trackdisk64 does not count sectors.
RDB uses like 3x32 bits.
SCSI can handle loads of sectors, ATA also.
And SFS can also handle more.
So where does the limit come from?

[xerces8]

The limitation comes from the fact that the size of the LBA (logical block addressing) fields supported by the most common SCSI chips in Amigas is 32 bits.

 

Incorrect, it does not depend on the sector size. Amiga can only address 2TB with trackdisk64 and NSD.

These two contradict. (at least partly).  :confused: