Realizing this does not solve the OP's immediate problem, for the
benefit of any others with similar exposure:
If you have important, possibly even critical data on DFHSM ML2 or
BACKUP tapes, then not making use of DFHSM DUPLEX capability is false
economy that you will eventually come to regret. If you are indeed
fortunate, you will realize this before you lose anything you can't live
without, but avoiding even one disastrous loss can justify the extra
tapes and resources required to write DUPLEX copies when writing ML2 and
BACKUP tapes.
If you are talking physical tapes and physical tape drives, then
occasional physical damage to media through repeated usage, mishandling
of media or drive failures does indeed occur, and loss of a single DFHSM
tape may affect thousands of data sets some of which could be very
important.
Even if you are talking virtual tape volumes and your VTS duplexes the
data for the virtual volumes, this doesn't automatically eliminate a
need for DFHSM duplexing. If an Operator can erroneously scratch a
DFHSM virtual tape volume, there is probably at best a limited window in
which the volume can be unscratched without data loss. If that window
is too small and you don't find there is a problem before that window
has been passed, then again your only salvation may be a DFHSM DUPLEX
tape copy.
J C Ewing
On 05/20/2015 08:06 AM, Michaud, Bruce wrote:
> Nope, nothing duplexed...
>
> Bruce Michaud
> Mainframe technical support
> US Airways 52N-UIT
>
> bruce.mich...@usairways.com
> Phone - 480-693-7754
>
>
> -----Original Message-----
> From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On
> Behalf Of Doug
> Sent: Tuesday, May 19, 2015 5:09 PM
> To: IBM-MAIN@LISTSERV.UA.EDU
> Subject: Re: anyone used the AUDIT function in HSM ?
>
> Sorry if I missed a post but,
> Is the tape DUPLEXED?
> Can't tell from the column skewing
> Regards,
> Doug
>
> .
>
> On May 19, 2015, at 19:01, retired mainframer <retired-mainfra...@q.com>
> wrote:
>
> If you want to know what HSM thought was on the tape, use the LIST TTOC
> command, not LIST BVOL.
>
> When asking for assistance with these kinds of issues, it is really helpful
> if you show us the whole job (job log, JCL, control cards, and output) plus
> all related messages from the system log.
>
>> -----Original Message-----
>> From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On
>> Behalf Of Michaud, Bruce
>> Sent: Tuesday, May 19, 2015 3:25 PM
>> To: IBM-MAIN@LISTSERV.UA.EDU
>> Subject: Re: anyone used the AUDIT function in HSM ?
>>
>> List shows nada -
>> VOLSER DEVICE BACKUP VOL TOTAL FREE THRESH LAST BACKUP
>> PSWD EXP RACF EMPTY IDRC DUPLEX PCT
>> TYPE TYPE FULL TRACKS TRACKS
>> DATE
>> ALT FULL
>>
>> V00793 3590-1 DAILY YES ******** ******** ***
>> 15/04/18 NO
>> YES NO NO Y *NONE* 96.9
>> ----- END OF - BACKUP VOLUME - LISTING -----
>>
>> But I know the tape wasn't written over - I found this in the log -
>>
>> ARC0309I TAPE VOLUME V00793 REJECTED, VOLUME ALREADY (CONT.)
>> CONTAINS VALID DFSMSHSM DATA
>
...
--
Joel C. Ewing, Bentonville, AR jcew...@acm.org
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