🚀 go-pugleaf

In article <6696@sugar.hackercorp.com> peter@sugar.hackercorp.com (Peter da Silva) writes:
:In article <14805@cbmvax.commodore.com> steveb@cbmvax.commodore.com (Steve Beats) writes:
:: It`s worth mentioning that this limit is per-partition, not a total limit.
:: You could conceivably hook up 56 disks each with a capacity of 2 Gigabytes
:: to each SCSI controller card in the system.
:
:More than that, no? You can have much larger disks, I would assume, if you
:partition them. How many partitions can you have on a disk? (I would guess
:that it would at least be limited by the screen resolution in the disk setup
:program).

	Wouldn't there be some sort of limit to the largest logical block
number accessed through SCSI? According to my Maxtor XT-3000S manual (The
only thing I have handy right now...) a SEEK command only allows logical
block numbers up to 24 bits long, and a SEEK EXTENDED only allows logical
block numbers up to 32 bits long. That means in SCSI I implementations,
you're limited to about 4G blocks, or 2T byte drives. Of course, with a
2T drive, you could have 1K partitions of 2G each... The problem here is
that typically, a 2T drive only uses LUN 0, and doren't support higher
LUNs. That means you're limited to 7K, 2G partitions. :-(
	Boy! It's a good thing partition BAM storage is in fast ram! :-)

:: Let`s just say that the Amiga can cope with more hard disk space than
:: anyone is ever going to need.....and see which year I`m proven wrong :-)
:
:Just wait until someone needs a single file over 2G.

	Hopefully, by then we'll be able to extend the file system beyond
2 gig... Maybe go to 64bit block designators?

:-- 
:Peter da Silva.   `-_-'
:<peter@sugar.hackercorp.com>.


-- 
     -Bill Seymour                                            billsey@agora
***** American People/Link Amiga Zone Hardware Specialist  NES*BILL *****
Bejed, Inc.       NES, Inc.        Northwest Amiga Group    At Home Sometimes
(503) 281-8153    (503) 246-9311   (503) 656-7393 BBS       (503) 640-0842