Re: Rescuing a tape archive, understanding dd

From: Maury Markowitz (maury_markowitz_at_hotmail.com)
Date: 11/07/05


Date: 7 Nov 2005 10:15:23 -0800


> I use BRU, and I can specify any block size I want. The manual
> says it uses 20KBytes by default, and perhaps it does. I use
> "64K". My tape drive (Exabyte VXA-2) has a 2MByte internal buffer.

What happens if I specify a block size that is larger than what was
used to write the tape? Zero-filled perhaps?

I guess my question is this: is there any way to determine the block
size, given the tape?

Maury



Relevant Pages

  • Re: DFHSM MAXBACKUPTASKS(1) using 2 drives
    ... I ask this because 2 Backup Tasks is the default value. ... If you do not specify this parameter on any SETSYS ... DFHSM MAXBACKUPTASKSusing 2 drives ... We are a small shop and do not have a lot of tape ...
    (bit.listserv.ibm-main)
  • Re: Rescuing a tape archive, understanding dd
    ... Maury Markowitz wrote: ... and I can specify any block size I want. ... BRU will not do that. ... give it and uses what is on the tape. ...
    (comp.os.linux.misc)
  • Re: Load from Tape using HMC - Stand Alone Tape
    ... You probablt need to specify a four digit device number, ... Load from Tape using HMC - Stand Alone Tape ... For IBM-MAIN subscribe / signoff / archive access instructions, ...
    (bit.listserv.ibm-main)
  • Re: Identifying Jobs, Started, TSO address spaces
    ... Mount is a special start task that allows an operator to specify the volume to be placed on a specific tape or DASD drive. ... For IBM-MAIN subscribe / signoff / archive access instructions, ...
    (bit.listserv.ibm-main)
  • Re: suggestions for speeding up a dd to DLT tape...
    ... It wouldn't hurt to specify an input block size. ... blocksize that you wrote when creating the archive with ufsdump. ... writing to tape in the same size blocks that ufsdump thinks it ...
    (comp.unix.solaris)