Re: [Networker] Auto media verify?
2004-05-07 11:13:48
> > DLT (and most all modern tape technologies, IIRC) do "read after
> > write", so DLT drives automatically verify that all the data they
> > receive is written to tape. That leads me to think that auto media
> > verify is not necessary, at least when writing to DLT.
> >
> > So I'm still left wondering: is there some compelling reason
> > to set auto media verify? (If the answer is yes, I would think
> > Legato would make it a default setting or at least mention it in
> > doc/release notes.)
> The question is, does DLT (or other technology) acknowledge the write
> before or after verifying the tape. If it's before the verification,
> then a situation could arise where the verification fails and there is
> not enough tape left in the cartridge to rewrite the buffer. I'll bet
> that is the case.
...doesn't this hypothesis imply that DLT drives are quite broken
by design???
> My understanding is that DLT has a "warning" mark some distance from the
> end (EOT vs EOM). The drive should attempt to write all buffered data
> after reaching the warning mark and then return EOT to the host. If
> true, then this particular issue is probably not a big deal for DLT
> users. I have no idea if other technology deals with it in similar ways
> or not.
...tf this understanding is true, then wouldn't the above
hypothesis would be false??
Apologies for being especially ornery today.
Has anyone read the last saves on some DLT tapes lately?
=:)
Perhaps it's worth pointing out that if we second-guess
vendor's specs, software's functionality, and the like, then
there would be no time to get any real work done!
steve
- - -
systems & network guy
high energy physics
university of wisconsin
--
Note: To sign off this list, send a "signoff networker" command via email
to listserv AT listmail.temple DOT edu or visit the list's Web site at
http://listmail.temple.edu/archives/networker.html where you can
also view and post messages to the list.
=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=
|
<Prev in Thread] |
Current Thread |
[Next in Thread>
|
- Re: [Networker] Auto media verify?, (continued)
- Re: [Networker] Auto media verify?, Darren Dunham
- Re: [Networker] Auto media verify?, Davina Treiber
- Re: [Networker] Auto media verify?, Oscar Olsson
- Re: [Networker] Auto media verify?, Steve Rader
- Re: [Networker] Auto media verify?, Stan Horwitz
- Re: [Networker] Auto media verify?, Steve Rader
- Re: [Networker] Auto media verify?, Maarten Boot (CWEU-USERS/CWNL)
- Re: [Networker] Auto media verify?, Steve Rader
- Re: [Networker] Auto media verify?, Stan Horwitz
- Re: [Networker] Auto media verify?, Darren Dunham
- Re: [Networker] Auto media verify?,
Steve Rader <=
- Re: [Networker] Auto media verify?, George Sinclair
- Re: [Networker] Auto media verify?, Steve Rader
- Re: [Networker] Auto media verify?, Stan Horwitz
- Re: [Networker] Auto media verify?, Ernst Bokkelkamp
- Re: [Networker] Auto media verify?, Darren Dunham
- Re: [Networker] Auto media verify?, Darren Dunham
|
|
|