On Jan 16, 2008, at 11:02 AM, Bob Shannon wrote:
EMC announced DMX4 disk system ...without disks. Flash memory
would be
used as a disk module
Simply back to the future again. Solid state devices were prevalent
twenty or so years ago. Still, with today's technology it makes
sense. Hopefully it will provide both better performance (no seek
time) and better reliability (no moving parts).
Bob,
You have hit it the head. We had a unit that emulated a 2305 (don't
remember which model) it worked well ..... except when we had a power
failure. Then at power up *EVERYTHING* was gone. We had to analyze it
and put a vtoc back and then redefine PLPA and then IPL again to get
the system to use it. I think my hair started to go gray because of
the blasted machine. It was gone within a month.
Oh, yes we had an application that *NEEDED* (well at least they
thought they did) the 2305. In the month that it was going out, we
got the applications people to use VIO. They were extremely happy
and that was the end of the beast. If the machine survives through a
power blink then I would reconsider it but it would take a lot to do so.
Ed
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