Date: Thu, 9 Apr 1998 16:27:31 +0100 (BST) From: Ian Pallfreeman <ip@mcc.ac.uk> To: questions@FreeBSD.ORG, scsi@FreeBSD.ORG Subject: compression on Exabyte 8700LT? Message-ID: <199804091527.QAA09483@albatross.mcc.ac.uk>
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I've recently acquired another Exabyte drive, an 8700LT. This drive claims to
be able to write 10Gb to a 112m tape in compressed mode, but I'm getting just
the 5Gb I'd expect uncompressed.
There are no switches other than the SCSI id on the box. The manual tells me
to enable compression in software. ``mt -f /dev/rst1 comp 1'' logs the error
"select returned an error of 5" to the console and gives me an I/O error from
mt(1).
How do I permanently enable compression?
FreeBSD 3.0-CURRENT #9: Thu Apr 9 16:06:09 BST 1998
ip@lurch:/usr/src/sys/compile/LURCH
[...]
ahc0: <Adaptec 2940 Ultra SCSI host adapter> rev 0x00 int a irq 9 on pci0.19.0
ahc0: aic7880 Single Channel, SCSI Id=7, 16/255 SCBs
[...]
st0 at scbus0 target 4 lun 0
st0: <SONY SDT-5000 3.30> type 1 removable SCSI 2
st0: Sequential-Access density code 0x13, drive empty
st1 at scbus0 target 5 lun 0
st1: <EXABYTE EXB-8505 0051> type 1 removable SCSI 2
st1: Sequential-Access density code 0x0, drive empty
TIA,
Ian.
--
Network Unit, SNOT Team, Manchester Computing, The University, Manchester, UK.
mail: ip@mcc.ac.uk | phone: +44-161-275-6006 | fax: +44-161-275-6040
Where once we had dragons to slay, now we just sacrifice chickens.
35,000 users, 622Mb/s networking, and a 486. :-(
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