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Re: Re[2]: Backup (hardware) for Linux



On Wed, 15 Jul 1998 13:23:02 +0300 (IDT), Evgeny Stambulchik
<fnevgeny@plasma-gate.weizmann.ac.il> wrote:

>udif@usa.net (Udi Finkelstein) wrote:
>
>>  DDS2
>>  Includes hardware compression (I've never heard about a DDS2 drive
>>  with no compression engine built in)
>
>For example, SONY SDT-5200. Very good drive. BTW, I think hardware compression
>isn't important. The compression is usually not very good (like w/ compress(1)),
>and for DDS-2 I/O rates this can be done on the host CPU with negligible
>additional load. The only drawback of drives without HW compression is that you
>can't read tapes written with the compression enabled.
Right. I even heard from someone about compatibility problems between
different tape models when the cassettes were compressed. The advice
was to stick to no hardware compression if you wanted to avoid
potential compatibility issues.


>Regards,
>
>Evgeny

Udi