Thanks Steve. And for now on I'll search for BDAM only in Chrome incognito mode.

On 5/12/2022 12:14 PM, Steve Smith wrote:
VSAM does not use hardware keys.  What I know of that does are PDS
directories (KL=8) (not PDSE), VTOCs (KL=44), SYS1.BRODCAST (KL=1), and
just heard about PASSWORD.  They are (of course) available for user
application with BDAM (Google suggests I meant "BDSM"... almost appropriate
;-).  I don't know whether ISAM ever used them.

They're basically a relic from when DASD was much much slower, and much
more expensive.

sas


On Thu, May 12, 2022 at 3:04 PM Tom Brennan <t...@tombrennansoftware.com>
wrote:

Yes... Now that you mention it, I do remember the key in PDS
directories, but I never worked with those others directly.  Do VSAM
datasets use disk keys?



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