Date: Sun, 5 Oct 1997 16:37:19 -0400 (EDT) From: Chuck <crtb@capecod.net> To: nguyenpk@kuci.org, regnauld@deepo.prosa.dk Cc: freebsd-isp@FreeBSD.ORG Subject: Re: Tape Backup Message-ID: <199710052037.QAA00299@daisy.capecod.net>
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> Khanh Nguyen writes:
> > Does FBSD-2.2.2-REL support Hewlett Packard Colorado T3000 tape
> > backup devices? If so, has anyone configured the kernel to use this? And
> > if yes, can you send me the copy of the kernel config?
> We're talking about the Travan SCSI HP/Colorado, right ?
> There was some talk about this drive some time ago, and IIRC,
> it has a problem with tape locking or something like it (i.e.:
> the Travan doesn't support it, and any operations to access the
> drive fail miserably). Last time I checked the archives, no
> no patch is available. Maybe check the Linux code (don't know
> if they support it).
Alas, as I found out, non-SCSI tapes of all stripes remain unsupported
under FreeBSD-2.2.2 :-( So I forked over 3 bills and bought a TR-4,
installed it as /dev/st0, and bingo, it goes like a champ, around
500KB/second!
Alas, over an ethernet from another FreeBSD 2.2.2 system using dump,
it hiccuped continuously, getting just about 50KB/second.
Is there any fix for that, like perhaps a humongous buffer? I figured,
since the average data rate was 50KB/sec., and the hiccups averaged
4 seconds, I was buffering about 200KB. Can I buffer say, 10MB?
> -[ Philippe Regnauld / Systems Administrator / regnauld@deepo.prosa.dk ]-
> -[ Location.: +55.4N +11.3E PGP Key: finger regnauld@hotel.prosa.dk ]-
Chuck Bacon -- crtb@capecod.net
ABHOR SECRECY -- DEFEND PRIVACY
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