SUMMARY: Adding a DDS1 or a DDS2 tape drive.

From: David Smith (
Date: Mon Jun 10 1996 - 13:38:59 CDT

Original post:

>Date: Thu, 6 Jun 1996 12:58:05 -0700 (PDT)
>From: David Smith <>
>Subject: Adding a DDS1 or a DDS2 tape drive.
>Hi Sun Managers,
>I need advice on adding a tape drive to a Sparc 10
>running Solaris 2.3.
>I intend using the tape drive to do a level 0
>backup of the internal 1.2 GB HD and the external 4.0 GB HD.
>We have two tape drives:
>One is a Wangtek 6200HS 4mm DDS
>and the other is a HPC1533 DDS2.
>I presume that it would make sense to use the HP.
>- Has anyone successfully used such a 4mm DAT?
>- What did you do to get it to work?
>I tried using the HP before. All I got was a very
>slow transfer rate, ending in I/O and Media errors.
>- Do I have to edit the st.conf file to get this drive
>to work properly? What would these edits entail?
>- Also, can the ufsdump in Solaris 2.3 cope with dumping
>amounts greater than 2GB to tape?



>From: Shigeki Misawa <misawa@physics.Berkeley.EDU>

>You should be able to get the proper st.conf entry for the drive from
>the main HP DAT web page at :
>Note that last I heard variable block size does not work with Solaris
>2.3 because of a kernel problem. Don't know if this has been fixed by


>From: Don Lewis <>

>Yes. I found a really good configuration guide at:

>From: Tim Evans <>

>Here's what we use for the HP:
>tape-config-list =
>"HP C1553A", "HP C1533A 4mm DAT", "HP-data2";
>HP-data2 = 1,0x34,512,0x19,4,0x18,0x18,0x18,0x18,3;


>From: Ric Anderson <>

>> - What did you do to get it to work?

>Did a
> touch /reconfigure
>shut down the system, plugged the drive in and rebooted.

>I then tested it with
> ufsdump 0bdsf 126 54000 12000 /dev/rmt/0hn /dev/rdsk/c0t3d0s0
>and it dumps at about 30-40mb/minute to a local HP 1533A.

He suggests that a hardware problem might be the cause of the
slow transfer rate and the errors I was getting.

>> - Also, can the ufsdump in Solaris 2.3 cope with dumping
>> amounts greater than 2GB to tape?

>I've dumped 3.7gb (largest amount of gunk I have on any one disk)
>with no problems on a single 120M tape. I've dumped three 2gb
>disks to the same 120M tape with no problem also.


Thanks to all the people who replied:
Ric Anderson <>
Tim Evans <>
Don Lewis <>
Shigeki Misawa <misawa@physics.Berkeley.EDU>

I have not been able to check out these suggestions, because
the HP DDS2 started reading data slowly from tape on a PC it used to
work fine on. It is now being repaired.

The response time and the quality of the replies on this
list is great.


   David Smith,  Lightbinders, Inc.
   E-mail: | WWW:
   Voice: (415) 621-5746    | Fax: (415) 621-5898

This archive was generated by hypermail 2.1.2 : Fri Sep 28 2001 - 23:11:01 CDT