dyer@spdcc.COM (Steve Dyer) (01/03/90)
I can't believe I'm asking this, but my sysmgr days are
far behind me.
What are the appropriate values for density and tape length
when invoking dump(8) using TK50's as the backup medium?
Also, should I just use dump's default write size, or, instead,
write to stdout piped into dd, and write to tape with a
specified block size?
I actually have to do this on both an Ultrix 3.0 and a 4.3BSD
system, both MicroVAX II's, so info on only one or the other
(say, as regards blocking factors), is fine.
I have to do these backups tonight (Tue, 1/2), so don't delay! :-)
Thanks.
--
Steve Dyer
dyer@ursa-major.spdcc.com aka {ima,harvard,rayssd,linus,m2c}!spdcc!dyer
dyer@arktouros.mit.edu, dyer@hstbme.mit.edubph@buengc.BU.EDU (Blair P. Houghton) (01/04/90)
In article <1079@ursa-major.SPDCC.COM> dyer@ursa-major.spdcc.COM (Steve Dyer) writes: >What are the appropriate values for density and tape length >when invoking dump(8) using TK50's as the backup medium? >Also, should I just use dump's default write size, or, instead, >write to stdout piped into dd, and write to tape with a >specified block size? 6250 and 2300 are fine, and let dump block it, or you'll forget to tell someone about the dd and they'll come looking to kill you six years later when they try to read that tape. >I have to do these backups tonight (Tue, 1/2), so don't delay! :-) >Thanks. You lose. Come to think of it, so do I. I shoulda done dumps yesterday... --Blair "Law of Least Surprise Rules!"