Johnny Luo wrote:
On 2/10/06, Steve Comstock <[EMAIL PROTECTED]> wrote:
The limit on aux is much larger:
paging data sets (what you call "aux") are disk files that
back up the pages not currently in real storage. So with lots
of page data sets you can have lots of address spaces, each
with a max of 2G virtual.
Yes,that's where I got puzzled.If you can have unlimited paging
data sets,it meas that you have unlimited auxiliary storage.But
just like real storage,you must assign each piece of aux a unique
address to identify it.And if your aux exceed 2G,how can you address
it?
Well, "unlimited" is pretty strong, but "very large" in any case.
You do not assign each piece of aux a unique address. The pieces
on aux (called "slots") can hold any page from any virtual storage.
In-memory tables keep track of where each page is mapped on DASD.
Kind regards,
-Steve Comstock
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