Re: specs for DLT2000

From: Simon Burge <simonb_at_melb.cpr.itg.telecom.com.au>
Date: Wed, 10 May 1995 09:58:15 +1000

On May 9, 4:48pm, CHELA KUNASZ /JILA (303)492-7807 wrote:
> Does anyone have the proper specs for using a DLT2000 with dump on
> a DECstation 5000/200 running Ultrix 4.4? I tried 1170 feet and
> a density of 62500 (which is the bpi/track). Then tried
> dump 0dfsu 62500 /dev/nrmt1h 1170 /usr
>
> and the result was that after several minutes it said it wanted another
> tape (this for a 277MB filesystem). It had also said it was going to
> need 1.74 tapes. It seems to think the tape is a TK50 or something.
> As far as I know the tape I inserted was a standard DLT CompacTape III.
> What did I do wrong? Also, what do people usually use for a blocking
> factor (b) for DLT2000's? It also seemed it was taking a while
> compared to what I expected...

Here, we always just specify 'B 2100000' on our dump command line,
since 2 Gig is Ultrix's maximum file system size. We've had no
problems doing this for the last few years...

A few simple tests here on a DLT showed that a 32k blocking factor
produces good results. Going over 32k made very little difference.

> Thanks for any help.
> Chela Kunasz

Simon.
Received on Tue May 09 1995 - 19:59:40 NZST

This archive was generated by hypermail 2.4.0 : Wed Nov 08 2023 - 11:53:45 NZDT