Xref: utzoo comp.unix.questions:15723 comp.unix.wizards:17699
Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!csd4.csd.uwm.edu!bionet!apple!oliveb!mipos3!omepd!merlyn
From: merlyn@iwarp.intel.com (Randal Schwartz)
Newsgroups: comp.unix.questions,comp.unix.wizards
Subject: Re: 8mm tape length for dump
Message-ID: <4810@omepd.UUCP>
Date: 16 Aug 89 16:22:19 GMT
References: <412@h.cs.wvu.wvnet.edu> <18999@mimsy.UUCP>
Sender: news@omepd.UUCP
Reply-To: merlyn@iwarp.intel.com (Randal Schwartz)
Followup-To: comp.unix.questions
Organization: Stonehenge; netaccess via Intel, Hillsboro, Oregon, USA
Lines: 20
In-reply-to: chris@mimsy.UUCP (Chris Torek)

In article <18999@mimsy.UUCP>, chris@mimsy (Chris Torek) writes:
| In general, however, the average installation has less disk data
| to back up than fits on a single one of these cartridges, so any
| length close to infinity suffices.  We have been using the command
| 
| 	dump 0ufds /dev/tape/1n 6250 32000 
| 
| but the 32000 here is just a WAG, and depends on this `infinite
| length' property.

Our vendor told us to use 43000 for a density and 120000 for a length
(for a 2-hour tape).  That works out to about 1.3 GBytes (roughly
infinity, yep :-).

Just another system hacker,
-- 
/== Randal L. Schwartz, Stonehenge Consulting Services (503)777-0095 ====\
| on contract to Intel, Hillsboro, Oregon, USA                           |
| merlyn@iwarp.intel.com ...!uunet!iwarp.intel.com!merlyn	         |
\== Cute Quote: "Welcome to Oregon... Home of the California Raisins!" ==/