ADSM-L

Re: DLT 2000XT tape experiences

1996-12-17 13:49:00
Subject: Re: DLT 2000XT tape experiences
From: Ron Thielen 773-702-7612 <SYSRONT AT UCHIMVS1.UCHICAGO DOT EDU>
Date: Tue, 17 Dec 1996 12:49:00 CST
> Does anyone have experience with the settings of block_size on DLT 2000XT's?
>
> We are not getting anywhere near the 'advertised' throughput on our DLT drives
> and I was told that the default 1024 setting is not optimal.  Does anyone have
> a recomendation?  Where do I see the best performance?
>
> Thanks in advance!
>
> Bob

I did quite a bit of benchmarking last year and found that performance
was no better, sometimes worse, than an 8mm tape drive unless you use a
blocksize of 0, variable blocked.  Then we were able to achieve transfer
rates that were significantly closer to "advertised".

Hope this helps.

 =======================================================================
Ron Thielen <r-thielen AT uchicago DOT edu>
Manager of Operating Systems
Networking Services
The University of Chicago
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