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From: Kenneth Merry <ken@ulc199.residence.gatech.edu>
Message-Id: <199601100224.VAA02651@ulc199.residence.gatech.edu>
Subject: Re: I would like your comment on this configuration
To: se@zpr.uni-koeln.de (Stefan Esser)
Date: Tue, 9 Jan 1996 21:24:49 -0500 (EST)
Cc: didier@omnix.fr.org, hackers@FreeBSD.ORG
In-Reply-To: <199601091616.AA10078@Sysiphos> from "Stefan Esser" at Jan 9, 96 05:16:13 pm
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> On Jan 9, 17:20, didier@omnix.fr.org wrote:
> } Subject: I would like your comment on this configuration
> } 
> } Mother Board:  ASUS P/I-P55TP4XE Rev 2.1 bios #401A0-0106 (Award)
> } Processor:     Pentium 133
> } Cache:         512k PB
> } Memory:        128Mb 60ns (DRAM)
> } SCSI:          Adaptec 2940W  
> } Hard disks:    2 x Seagate Barracuda Fast Wide SCSI 2 Go 
> } Video:         Miro 20SV  (S3-964, 2Mb VRAM)
> } DAT:           Conner 4326 4/8 Gb

> I'd definitely choose the HP1533A !
> 
> It is some three times faster than the Conner,
> i.e. does 514KB/s (times compression factor).
> 
> Doing backups, I see some 800KB/s to 1100KB/s
> written to tape (depending on whether the data
> had been compressible or mostly compressed
> archives).

	FWIW, my employer got 7 PC's with the HP1553A's in them...and
has had trouble with tapes jamming in some of them.  (I didn't mess with 
them much...so I can't really speak from personal experience. )  

> Regarding DDS-2: I've heard multiple times,
> that DDS-2 tapes are not reliable. And since
> somebody had recorded nuclear physics data
> on DDS-2 tapes and had found no way to read 
> back more than a few MB, I tried myself and
> now would never again trust 120m DDS-2 tapes.

	I've got a Sony SDT-5000 on my machine...I use 120m tapes all the
time with it and I've never had any trouble, except for that time I tried
using audio DAT's in it...:(   It isn't as fast as the HP drives, but it
does seem to work reliably.  (I'm not sure what kind of throughput I get on
average...Sony's web page says 366K/sec without compression...and it does
have a meg of buffer on board.  Here's the URL:
http://cons3.sel.sony.com/SEL/ccpg/storage/tape/t5000.html )


Ken
--
Kenneth Merry
ken@ulc199.residence.gatech.edu
Disclaimer:  I don't speak for GTRI, GT, or Elvis.