DAT TAPE DRIVES: Wangtek can't read HP DAT tapes

DAT TAPE DRIVES: Wangtek can't read HP DAT tapes

Post by Jack L. Owen » Mon, 14 Apr 1997 04:00:00



I have both:
WANGTEK   Model: 6130-HS           Rev: 4G16
HP        Model: C1533A            Rev: 9503

Neither unit can read tapes created by the other machine. Is there a way
to create tapes that can be read by both machines?

I use a program called TAPEDISK in DOS and Windows. Tapes created on
either machine are readable by the other.

BTW, is there a program similar to DOS TAPEDISK in the UNIX world?
TAPEDISK makes a tape drive appear to be one large harddisk.


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DAT TAPE DRIVES: Wangtek can't read HP DAT tapes

Post by Andrzej Baginsk » Wed, 16 Apr 1997 04:00:00



: I have both:
: WANGTEK   Model: 6130-HS           Rev: 4G16
: HP        Model: C1533A            Rev: 9503

: Neither unit can read tapes created by the other machine. Is there a way
: to create tapes that can be read by both machines?

I think it is because of hardware compression. Wangtek doesn't have it at
all - I have same model. So check if HP drive has hardware compression
enabled.  

Andrzej
 ----------------------------------------------------

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

 
 
 

DAT TAPE DRIVES: Wangtek can't read HP DAT tapes

Post by Jack L. Owen » Wed, 16 Apr 1997 04:00:00




> : I have both:
> : WANGTEK   Model: 6130-HS           Rev: 4G16
> : HP        Model: C1533A            Rev: 9503

> : Neither unit can read tapes created by the other machine. Is there a way
> : to create tapes that can be read by both machines?

> I think it is because of hardware compression. Wangtek doesn't have it at
> all - I have same model. So check if HP drive has hardware compression
> enabled.

> Andrzej
>  ----------------------------------------------------

>  ----------------------------------------------------

No hardware compression used on either unit. Tapes written by TAPEDISK
Dos program are readable by either machine.
--

4421 Myrtle Avenue                                              K6PWY
Long Beach, California 90807                            (562)989-9413
 
 
 

1. tape parameters for HP JetStore 6000 4mm DAT drive, DDS2 120m tapes?

I have an external HP Jetstore 6000 DDS2 DAT drive. Does anyone have the
parameters for this drive for Sun Solaris 2.3? So far, I've found that you
need to change some internal dip switches (which by the way was very hard to
get to) to make the drive work. I'm currently using the following parameters
to ufsdump:

blocking factor 1000
density         15000
size            15000

The values for the density and size were provided by HP tech support. However,
they told us to use the highest blocking factor that our system can tolerate.
I did do some timings and found that for a blocking factor of 96, I got a
measured transfer or 266 Kbytes/s, and for a blocking factor of 2000, I got
437 Kbytes/s. So the blocking factor does make a big difference. However,
depending on what processes you are running, ufsdump may fail because of lack
of resources (swap space perhaps?).

Does this tape drive require a specific blocking factor?

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