[Info-vax] RX-2620 server failure

[Rich Jordan]

On Thursday, September 26, 2019 at 7:12:05 AM UTC-5, Simon Clubley wrote:
> On 2019-09-25, Rich Jordan  wrote:
> >
> > Heh... in the 'well isn't _that_ special' department.  I tried a new DVD-R burned V8.4 OE disk, and it mounted.  Tried an original alpha CD, and it mounted.  Tried my burned V8.4 Alpha CD, buffer overrun; tried the earlier factory HP VMS V8.2 OE DVD, buffer overrun, earlier burned V8.3 and V8.4 DVD-Rs that were working in July, buffer overrun.
> >
> 
> Does the reader head on the DVD unit need cleaning ?
> 
> Simon.
> 
> -- 
> Simon Clubley, clubley at remove_me.eisner.decus.org-Earth.UFP
> Microsoft: Bringing you 1980s technology to a 21st century world

Maybe.  I ran a cleaning disk on the first replacement after starting to get the buffer errors, no change.  Didn't try on the others; they were all pulled working and all tested a couple of months ago on the Alpha.  Worth doing again though.

I'm aware of burned optical disks failing over time, and light sensitivity.  These are stored in an old plastic CD case that is the next best thing to sealed against light, in an office environment.  They aren't that old, except for the one factory HP disk that is also generating buffer errors.  It looks like a factory disk but who knows, maybe HP was cheaping out even on that for their high paying VMS customers by then and using burners.