Thanks to the responses of:
Alan Rollow
Alan Davis
Tom Blinn
Who said that the 32 GB limitation was not in DUNIX, but in the RAID
controller that was being used (KZxxC) or its driver. The actual
maximum file system size in DUNIX is 128 GB for 3.x and 512 GB for 4.x
using ufs, and 16 TB using AdvFS. Alan Rollow also showed me an example
where he created a single file to fill up a 46 GB file system, so it
looks like DUNIX also has very large file addresses as well.
ANSI specifications for SCSI CAM CDB defines a 32 bit unsigned LBN
address, which allows for addresing of 4 billion blocks, or 2**41
(2 Tera) bytes per device (using 512 byte blocks). That should be
adequate to address any disk drives produced in this century.
(10 years ago, I was in awe of Maxtor's 760 MB on a 5.25 drive.)
eyc
Received on Sun Feb 01 1998 - 04:03:17 NZDT