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Amiga computer related discussion => Amiga Software Issues and Discussion => Topic started by: Dragster on June 16, 2004, 11:55:39 PM

Title: Scsi dds streamer tape on amiga?
Post by: Dragster on June 16, 2004, 11:55:39 PM

Hiya mates...

I got (for free hehe) a SCSI DDS2 streamer tape and I was wondering if it's possible to use it on amiga (I have SCSI interface) and if so, what software can I use to make backups from HD partitions to tape? Do I need some kind of drivers?


Thanks for any help!

Cheers

D.

Title: Re: Scsi dds streamer tape on amiga?
Post by: shaf on June 17, 2004, 02:17:04 AM

Dragster,

I think Diavlo Backup will do what you want. I haven't tried it yet but also have a DDS2 SCSI DAT Drive sitting around saying use me. ( Model Seagate STD24000N aka. Connor 4324NP)

Cheers

Shaf

Title: Re: Scsi dds streamer tape on amiga?
Post by: Dragster on June 17, 2004, 06:07:22 AM

Greatm thanks Shaf. I'll take a look at it.. it's commercial software, right?? I wonder where can I find it...

Cheers


Dragster

Title: Re: Scsi dds streamer tape on amiga?
Post by: Dragster on June 17, 2004, 11:13:56 PM

I've tried diavolo demo from aminet but it seems an old version, I know there's version 3.8 and Diavolo 2000.. I'd like to get hold of one of these two.. anyone have an idea of which is the latest?

cheers

Title: Re: Scsi dds streamer tape on amiga?
Post by: gregthecanuck on June 18, 2004, 01:03:28 AM

I used the good old "tar" command.  It is available on Aminet somewhere.  "tar" is a command-line archiver.  I seem to remember it needed some other device installed to work - a tape handler in L:?  I think this was available on Aminet as well.

This is how I used my A3070 tape backup from 3.1 and it worked fine - 250MB.

The nice thing about tar files is that they are (in theory) portable.


Cheers!

Title: Re: Scsi dds streamer tape on amiga?
Post by: Dragster on June 18, 2004, 01:13:01 AM

HI gregthecanuck

Thanks for your reply. Interesting.. I didn't know I could use tar on amiga... must be like in unix then.. I'll look for the device to see if it can handle my tape drive. Tar's a good option, indeed.

Cheers

Dragster

Title: Re: Scsi dds streamer tape on amiga?
Post by: shaf on July 09, 2004, 04:10:23 AM

Although tar (short for tape archiver) is the dstandard in the Unix world, it has terrible compression. sometimes tarred file will be bigger than the original file.
My suggestion is if using tar to compress the files first before writing to tape.

I usually zip up the files first and then tar them.
The final archive ais referred to as a tarball

Cheers

Shaf

Title: Re: Scsi dds streamer tape on amiga?
Post by: Piru on July 09, 2004, 07:53:46 AM

@shaf

Quote

Although tar (short for tape archiver) is the dstandard in the Unix world, it has terrible compression.

tar has no compression. It can gzip the tar file, or call external (de)compress command for it, however.

Quote

sometimes tarred file will be bigger than the original file.
My suggestion is if using tar to compress the files first before writing to tape.

No no no. You tar (group) files first, then compress the resulting data. This will always yield better compression ratio than compressing single files.

To gzip the tar file automagically use 'z' flag with tar.

Quote

I usually zip up the files first and then tar them.
The final archive ais referred to as a tarball

Eeeeeh, no. That's totally braindead, and the wrong way around. If you *really* want to use zip, you need to tar first, then zip the resulting tar file.

I recommend bzip2:n the tar though, or using 'j' option with recent tar. If your tar has no 'j' option use, '--use-compress-program bzip2'.