Sheelagh,

why a compressed image should be faster to restore than a complete
mirrored image goes over my comprehension. Is perhaps also the second
disk actually use in "primary functioning"?

Thanks
Mauro, STM

> From what I understand from IBM UK 3494 Support, there is a relatively
> new software mirroring feature that will make a compressed image of the
> 3494 Library information on the second disk.  It takes about an hour to
> install and would save a lot more hours should you lose the primary
disk.
> We only learnt of this quite recently and are planning to install it at
> the next maintenance slot.
>
> I'd be interested to know Simon (if you know) why IBM said not to touch
> it as this is contrary to the advice we have been given by IBM in UK?
>
> In our experience it is not just hardware failure that can get you on
> the 3494 PC - we did once have the software updated (by engineers) and
> it went horribly wrong and we lost 24 hours with the 3494 ... oh well,
> all in a days work?
>
> Thanks, Sheelagh
>
------------------------------------------------------------------------
> Sheelagh Treweek                   Email:
> Sheelagh Treweek                   Email:
sheelagh.treweek AT oucs.ox.ac DOT uk
> Oxford University Computing Services           Tel:   +44 (0)1865
273205
> 13 Banbury Road, Oxford, OX2 6NN, UK           Fax:   +44 (0)1865
273275
>
------------------------------------------------------------------------
>
>
> >X-OpenMail-Hops: 1
> >MIME-Version: 1.0
> >Content-Transfer-Encoding: 7bit
> >Date: Thu, 10 Feb 2000 07:52:36 +0800
> >From: Simon Watson <simon.s.watson AT SHELL.COM DOT BN>
> >Subject: Re: 3494 Tape Libraries
> >To: ADSM-L AT VM.MARIST DOT EDU
> >
> >We have looked into this in the past, and according to IBM we should
> >not touch it.  As far as they are concerned it is an IBM serviceable
> >part.  However, I would suggest you have an education issue for your
> >IBM CE's.  They should be able to rebuild in 1/2 an hour or so.
> >Although it would be nice if it had mirrored disks...
> >
> >Simon
> >
>
> -----Original Message-----
> From: Bill.Maloney
> Sent: Wednesday, 09 February, 2000 10:26 PM
> To: ADSM-L
> Cc: Bill.Maloney
> Subject: 3494 Tape Libraries
>
>
> Hello All,
>
> I would be curious to hear if anyone has a backup strategy for the OS/2
> PC that
> runs the 3494 tape library? The reason I ask is that we had a hard disk
> failure
> on the PC this weekend and it took three IBM CE's three days to rebuild
> it.
> Three days without a tape library is not pretty. The process was
> basically a
> complete re-install of the OS.
>
>
> Thanks..
>
> Bill Maloney
> AIX System Admin
> The Pep Boys