On Fri, 17 Mar 2017 01:01:51 -0000, Johnny Billquist <[email protected]>
wrote:
On 2017-03-16 23:01, Hittner, David T [US] (MS) wrote:
What I started with, though, was managing 11/730s in the mid-80s and
was optimizing the order of files on the console tape to be in the
order they were requested, so a 30-minute boot process fell to under 5
minutes... nearly all the time spent was doing serial transfers with
far, far less tape motion. -ethan
What always surprised me was that Digital provided VAX 730/750 Console
tapes "Out Of Order" (alphabetically) which caused slow cold boot
times, and YOU had to create an optimized version of the tape if you
wanted a faster boot time. And as Ethan said it really made a
difference in the cold boot time.
.. What a pain that was. I guess they never cold-booted the internal
development console-tape systems enough to get annoyed enough to
optimize the tapes for the customers. I spent a lot of time making
boot-optimized console tapes also.
My only comment is that I normally never booted from the TU58. Why would
you do that, except at initial install, or to run diagnostics.
Johnny
As I recall it was a lot quicker to rewrite the tapes in the HSC than on
the VAX drive too :-)
--
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