Edward Gould wrote:
On Apr 24, 2018, at 12:58 AM, Brian Westerman <[email protected]>
wrote:
OAM is pretty fast for SMS managed tape. For example, we have a client that
uses literally thousands of really small tapes per day (it's a long sordid
story as to why) with 512 virtual tape transports and an average of 156 in
constant use, averaging 3 to 5 mounts per second, there is less than .25 second
(wall clock) delay between the request for a tape and the mount being satisfied.
Brian,
Interesting comment thanks,
This goes against what IBM seems to think as to what is happening out in the
real world. This show why IBM must continue to support tape as a software
delivery option.
I know your system might be extreme but it does show there is still a demand
for software delivery, in tape format.
Ed
What software delivery on tape might have to do with what sounds like a
fairly active VTS is not, I must admit, terribly clear to me. (If Brian
has an operator who can mount tapes in 1/4 second, at a rate of 3-5
mounts per second, he must wear a red cape.)
The volume of actual, real-world tape orders for IBM software products
is a matter of record. We know the volume of orders for each media type,
and for downloads overall, by operating system platform, and by product.
We need this data to project demand so we can purchase the media and
bandwidth we need, and for cost accounting. I'm not sure how we could
get a better picture of real-world demand than from order data and
client requirements. The order data is pretty compelling, and I can't
recall having seen new client requirements in this area in a long
time--over a decade.
All that said, if someone has a pertinent data source we've missed, I'm
happy to listen and learn.
--
John Eells
IBM Poughkeepsie
[email protected]
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