[97593] in RedHat Linux List
Seagate STT8000A tape backup success story
daemon@ATHENA.MIT.EDU (Charles Galpin)
Tue Nov 3 23:29:44 1998
Date: Tue, 3 Nov 1998 23:27:01 -0500
From: Charles Galpin <cgalpin@lighthouse-software.com>
To: "redhat-list@redhat.com"@smtp2.erols.com
Resent-From: redhat-list@redhat.com
Reply-To: redhat-list@redhat.com
Thought I'd share some info about a successful tape backup install.
Thanks to all those that replied to my questions, if not directly answering
them, they always seem to get me thinking in the right direction. Special
thanks to Rich Shepard <rshepard@appl-ecosys.com> for sharing his brutab
settings. I have included mine below.
Hardware: Seagate TapeStor STT28000A ( ATAPI 4GB/ 8GB compressed )
I paid $219 for it w/ 1 tape. Extra tapes cost me $28 each.
Documentation says up to 60 MB/minute with 2:1 data compression, or
uncompressed rates of 18 to 30 MB/minute ( up to 36 MB/minute for the SCSI
version)
I got about 25 MB/minute on my first run ( 14 MB/minute total with a verify
).
* needs to be on a cable NOT with another HD, FD, or sound card (CDROM ok)
Software: BRU2000-PE (single user license on official boxed set CD1 in
Redhat/RPMS or $89 )
Fully compatable with more expensive server versions when your LAN grows!
So far looks great. It helped having Rich provide the settings of course.
Already impressed with the company (www.estinc.com) - I was poking
around their site because I couldn't find BRU on my CDs, and sent them a
note
about a web page typo and asked them where the PE edition was on the CDs.
Would you believe the Vice President replied the next day with a nice note
and
the path to the rpm ( after I'd found it myself of course ).
A couple of things we all should know. True to form, Linux uses the same
naming convention for tape drives as it does for hard drives. The drive can
be accessed as /dev/ht0 (/dev/nht0 for nonrewind ). Seems obvious now, but
took me a while to catch on. IDE tape support must be in the Kernal -
already there in RH5.1 2.0.35.
relevent brutab info
######################################################################
# Seagate STT8000A ATAPI 8G tape drive (TR-4)
######################################################################
/dev/ht0 \
devname="Seagate Drive, 4GB, rewind" \
size=4000MT bufsize=32k seek=0 \
rawtape tape shmcopy rewind autoscan
# Tape movement commands for nht0
/dev/nht0 \
devname="Seagate Drive, 4GB, norewind" \
size=0 bufsize=32k seek=0 \
rawtape tape shmcopy norewind noautoscan \
eodcmd="mt -f /dev/nht0 eod" \
rfmcmd="mt -f /dev/nht0 fsf 1" \
bfmcmd="mt -f /dev/nht0 bsf 1" \
retencmd="mt -f /dev/ht0 retension" \
rewindcmd="mt -f /dev/ht0 rewind" \
ftmcmt="mt -f /dev/ht0 erase"
-- Charles Galpin <cgalpin@lighthouse-software.com>
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