copy from 8mm to 4mm tape across ethernet ?

copy from 8mm to 4mm tape across ethernet ?

Post by Bill Lyo » Thu, 07 Apr 1994 12:05:35



Hi there !

Can some kind person please help us ?  We have a series of 8mm tapes with
some important data on.  One of our machines has an 8mm exabyte drive attached
and another has a 4mm DAT tape attached.  We want to copy the data directly
to the DAT tapes for storage.

Can anyone suggest a simple series of commands to extract data from the 8mm
tapes and pipe this output across the ethernet directly to the 4mm tape ?

Many thanks

Bill Lyons

--
Applied Climate Research Unit, University of Queensland
Brisbane        QLD     4072    Australia.
Ph (07) 365 3565 [Int'l 617 3653565] Fax: (07) 3653561 [Int'l: 617 3653561]

 
 
 

copy from 8mm to 4mm tape across ethernet ?

Post by James Stevens - SunSoft Support Contract » Tue, 12 Apr 1994 23:56:47



Quote:> Hi there !
> Can some kind person please help us ?  We have a series of 8mm tapes with
> some important data on.  One of our machines has an 8mm exabyte drive attached
> and another has a 4mm DAT tape attached.  We want to copy the data directly
> to the DAT tapes for storage.
> Can anyone suggest a simple series of commands to extract data from the 8mm
> tapes and pipe this output across the ethernet directly to the 4mm tape ?

For the sake of this text :-

fourmm  : name of machine with DAT
eightmm : name of machine with Exabyte (or whatever 8mm tape driver)

From machine with tape drive first ensure that you have ".rhosts" set for remote execution with no password :-

fourmm% rsh eightmm ls

This should show a directory listing not give the error message "Permission Denied".

then to transfer :-

fourmm% dd if=/dev/rmt/0 ibs=8K | compress | rsh eightmm "uncompress | dd of=/dev/rmt/0 obs=8K"

The compress ... uncompress are not necessary but will give a performance increase, particularly on a busy net.

 
 
 

copy from 8mm to 4mm tape across ethernet ?

Post by Pete Barb » Wed, 13 Apr 1994 00:03:25


example:
Host:a
User:root
Drive:8mm, /dev/rmt/0

Host:b
User:root
Drive 4mm, /dev/rmt/0

create an .rhosts file containing the line:
a

in / dir on b.

on a issue the command

dd if=/dev/rmt/0 | rsh b dd of=/dev/rmt/0

This should work, check the man pages for dd as you
may want to set block sizes etc...
This may not work if machines are different types,
e,g, SunOS & Solaris, I;m always getting my
SunOS/Solaris tars/cpios/dd in a muddle,

Pete

: Hi there !

: Can some kind person please help us ?  We have a series of 8mm tapes with
: some important data on.  One of our machines has an 8mm exabyte drive attached
: and another has a 4mm DAT tape attached.  We want to copy the data directly
: to the DAT tapes for storage.

: Can anyone suggest a simple series of commands to extract data from the 8mm
: tapes and pipe this output across the ethernet directly to the 4mm tape ?

: Many thanks

: Bill Lyons

:  

: --
: Applied Climate Research Unit, University of Queensland
: Brisbane      QLD     4072    Australia.
: Ph (07) 365 3565 [Int'l 617 3653565] Fax: (07) 3653561 [Int'l: 617 3653561]

--
--------------------------------------------------------------------------------

Tel: +44 (0)483 740770  Fax   : +44 (0)483 771998
--------------------------------------------------------------------------------

 
 
 

copy from 8mm to 4mm tape across ethernet ?

Post by David L. Markowi » Fri, 15 Apr 1994 03:45:26



>Can some kind person please help us ?  We have a series of 8mm tapes with
>some important data on.  One of our machines has an 8mm exabyte drive attached
>and another has a 4mm DAT tape attached.  We want to copy the data directly
>to the DAT tapes for storage.
>Can anyone suggest a simple series of commands to extract data from the 8mm
>tapes and pipe this output across the ethernet directly to the 4mm tape ?

[several suggestions based on dd deleted]

No no no...  Using dd requires choosing a block size, which may or
may not match how the tape was written.  Some drives (QIC) don't
care, so long as the block size is a multiple of 512 bytes.  Some
do, like 1/2" drives.  I'm not sure about 4mm, but I believe some
8mm drives do care.

The best way to do this is to use tapecv, which was posted recently.
It was designed to do exactly this.
--

        David L. Markowitz
        Solaris Systems Division - Genisco Technology Corporation

 
 
 

1. Re. copy 8mm tape to 8mm tape

.

try '# tcopy /dev/rmt<source#> /dev/rmt<target#>'

-frank-

.----------------------------------------------------------------------.
| E-Mail: FRANVM3(KRAEMERF)                 - IBM VNET  "Yes, I'm one  |
| ======  IBMMAIL(DEIBM27S)                 - IBM-Mail   of those      |
|         DE.IBMX400.IBMMAIL.KRAEMER.KRAEME - X.400      stupid IBM    |

| Voice : +49-(0)611/776-364                                           |
| Mail  : Abraham-Lincoln Street 26, 6200 Wiesbaden, Germany           |
'----------------------------------------------------------------------'

2. xdmcp problems

3. 8MM and 4MM Tapes/Tape Drives

4. DES for Linux?

5. Duplicate 8mm tape to 4mm tape

6. XFree86 4.3.0 flickering lines on SIS530

7. Copy from tape device to tape device across the network

8. lynx -post_data option

9. Stupid Questions: Sun 8mm dump tape =>AIX 8mm dump tape

10. How can I get the IBM RS6000's 8mm tape to read other 8mm tapes ?

11. labels for 4mm/8mm tapes?

12. tape eject on 4mm and 8mm drives

13. Making boot tape for HP 9000: 4mm to 8mm...Can it be done???